CA1306948C

CA1306948C - Storage stable topical composition

Info

Publication number: CA1306948C
Application number: CA000553658A
Authority: CA
Inventors: Ray I. Sheppard; Juvenal A. Cuni
Original assignee: Arseco Inc
Current assignee: Arseco Inc
Priority date: 1986-12-08
Filing date: 1987-12-07
Publication date: 1992-09-01
Anticipated expiration: 2009-09-01
Also published as: JPH01502189A; WO1988004168A1; EP0292551A1

Abstract

ABSTRACT OF THE DISCLOSURE
A storage stable topical composition, especially suitable for pharmaceutical and cosmetic uses, which comprises a topically active ingredient, a sugar, a moisture control agent and a cream base. The carrier cream base comprises one or more from each of the groups of wax compounds, thickening agents and surface active agents dispersed in water.

Description

~ 3 ~ ~i 9 ~ ~3 A STORAGE STABLE TOPICAL COMPOSITION
Backqround of the Invention The present invention relates to a sugar-containing composition useful in topical applications having enhanced storage stability and a method for imparting the storage stability to the composition.
One of the primary factors which determines the practical usefulness of a topical cream composition is storage stability. Lengthening of the "shelf life" of a cream prior to the onset of composition separation or crystallization offers obvious advantages such as ease of inventory management, reduction of waste incurred in disposing of creams which are no longer active and removal of the additional burden and uncertainty involved in re-mixing a composition prior to application in cases where this procedure is possible. Additionallyr when ~he topical cream is being utilized as a medicament, a further advantage of reduction of inadvertent administration of a composition which can no longer perform its intended function is obtained.
Storage stability of the presently claimed composition is particularly difficult due to the presence of relatively high amounts of sugar in the cream. Sugar compounds are known to dissolve in almost anything having a high moisture content. Obviously, a high moisture content is undesirable for a topical cream composition.
As a result, much effort has been put forth in an attempt to increase the storage stability of topical compositions.
See, for example, U.S. Patent No. 4,271,143 issued to Winicov ~t al. on June 2, 1981, U.S. Patent No. 4,401,651 issued to Knutson on August 30, 1983 and British Patent No.

2,084,464 issued to Beta Medical Products Ltd. on April 15, 1982.
Summary of the Invention -- ~3~

Accordingly, it is an object of the present invention to provide a topical cream composition which is storage stable for a long period of time.
It is a further object of the present invention to provide a method for imparting storage stability to topical cream compositions by adding a moisture control agent to the cream.
It is another object of the present invention to provide an improved topical cream composition by adding a sugar and a moisture control agent to the composition.
It is a further object of the present invention to provide a topical cream which can be manufactured in a continuous or Aiscontinuous manner.
It is another object of the present invention to provide a crsam base for a topical cream composition comprising wax compounds, thickness and surfactants.
It is a further object of the present invention to provide a topical cream composition which is homogenous throughout.
It is another object of the present invention to provide a topical cream composition of such a consistency to render it capable of being applied directly to the skin or to a dressing material.
Still other objects and features of the present invention will become apparent to those skilled in the art from the following detailed description of the present invention.
Detailed Description of the Invention The present invention contemplates a storage stable topical composition comprising:
(a) about 5 to about 30% by weight of a cream base wherein said cream base comprises:
(i~ about 5 to about 10% by weight of one or more topically acceptable waxes;
(ii) about 0.01 to about 5% by weight of one or more 13~16~ lB

topically acceptable thickeners;
(iii) about 0.5 to about 3% by weight of one or more topically acceptable surfactants; and tiv) the balance being substantially water;
(b) about 0.1 to about 7% by weight of a topically active ingredient;
~c) about 50 to about 95~ by weight of a sugar; and (d) about 0.5 to ahout 2.5~ by weight of a moisture control agent.
The present invention further contemplates a storage stable cosmetic composition wherein the sugar level may be reduced to as low as 20% by weight, with the amount by weight of the cream base being adjusted upward as necessary, up to 70% by weight or more. The enhanced storage stability property of the cream compositions is derived from the combination of the ingredients therein which will be discussed in detail below.
The vehicle for the topical composition for the present invention is a cream base made up of one or more compounds chosen from each of the categories of waxes, thickeners and surfactants. Each of the categories and their contribution(s) to the cream base are detailed below.
~ ax compounds are useful as emollients and humectants in topical applications. That is, they aid in softening, moisturizing and lubricating the skin. The presence of such emollient/humectant materials promotes the production and application of a cream which will not irritate the skin through abrasion. The wax compounds preferred, according to the present invention, are cetyl alcohol, stearyl alcohol, heeswax, natural or synthetic candelilla, carnauba, jojoba oil, and ceresine.
Thickening agents, as the name implies, serve to add body to the composition by increasing the viscosity of the cream. The presence of such thickeners in a sufficient : -- : .: ' ' ' ~3~

amount promotes the production of a cream composition of a consistency suitable for topical application. Preferred thickening agents, according to the present invention, are synthetic clays, cellulose ether compounds and polyethylene glycol compounds. Most preferred thickening agents are Laponite X1~ (a synthetic clay), Methocel (methyl cellulose), ~thoce~ (ethyl cellulose), Natroso~ (a cellulose ether compound), carboxymethylcellulose and PEG
400 (polyethylene glycol 400).
Surface active agents or surfactants serve a multitude of pu rposes in topical compositions. The hydrophilic/hydrophobic structural nature of surfactants cause them to orient at solid/liquid or liquid/liquid interfaces. The structure of surfactants also functions to decrease the contractive forces at the juncture of two liquids, the surface tension, thereby promoting the dispersion of one liquid in another. Moreover, these additives promote the dispersion or suspension of solids in a solution. This feature is important in emulsifying the wax compounds, dispersing the thickeners and also providing some assistance in the penetration of the resultant cream into the skin. Preferred surfactants, according to ~his invention, are polyethylene glycol ether compounds and sorbitan monooleate compounds. Most preferred surface ~5 active agents are Tergitol~ 15-s-9 (a polyethylene glycol ether compound), nonoxynol 9 (nonylphenyl polyethylene glycol ether), and Polysorbate~ 80 (polyoxyethylene 20 sorbitan mono-oleate).
In addition, some surfactants exhibit anti-microbial properties. The structural nature of these compounds as discussed above permits the surfactants to damage or disrupt the cell membrane of microbes through inactivation of the enzymes ~hich maintain said membranes or by physical disorgani~ation of the membranes. Thus, in certain ~` .

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pharmaceutical and cosmetic uses, the surfactant ingredient(s) may enhance act:ivity.
The topically active ingredient found in the composition is, of course, responsible for the bul~ of the activity or useful utility of the present invention. Although the invention is applicable to a cream useful in any topical application, those of a pharmaceutical or cosmetic nature are preferred. Examples of suita~le pharmaceutical active ingredients include povidone iodine, bacteriostatic agents, antibiotics, anti-inflammatory agents, microbicidal agents and vitamins, while the cosmQtic active ingredients include aloe and vitamins.
Suitable bacteriostats according to the claimed invention are acrisorcin, resorcinol, fluorouracil, benzoyl peroxide, dichlorindolene and hexachlorophene, for example. Suitable anti-inflammatory agents include, dimethyl sulfoxide, hydrocortisone, betamethasone benzoate and methylsalicylate, for example. Antibiotics usable in the present invention include Bacitracin, Amphotericin B, chloramphenicol and polymyzin B sulfate, for example.
Also, vitamins A and E, for example, are capable of being suspended in a topical cream of the type contemplated by the present invention in both medicinal and cosmetic applications. Finally, suitable microbicides include iodine, gluconate and hydrogen peroxide, for example.
A sugar compound is also present in the topical cream of the present invention. The sugars contemplated by the present invention are mono- and di-saccharide compounds, including their liquid forms and stereoisomers. Preferred sugar compounds are glucose, fructose and sucrose. These compounds provide nutrition to the skin to which the cream is applied, and, in the case of a pharmaceutical use such as antisept:ic treatment of an open wound, aid in the healing process. Also, some sugars, such as sucrose, :

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exhibit anti-bacterial activity, which enhances the activity of the resultant topical cream. Thus, the cream containing sugar with no other active ingredient will be a useful product.
The moisture control ingredient required by the present claims is, preferably, selected from the group consisting of finely divided silicon dioxide (Cab-O-Si~ M-5), anhydrous lanolin and cholesterol. This component absorbs any excess moisture in the topical cream composition thereby maintaining the delicate balance between the ingredients of the cream. Since the equili~rium which exists betwePn the components in the cream is able to be maintained, the tendency for any one of those components to release from the others is reduced.
The storage stable topical cream formulation contemplated by the present invention may be manufactured by art-recognized methodology, with the following set forth as exemplary.
First, the cream based carrier vehicle must be prepared using a standard oil-in-water smulsion technique.
Step 1: In a suitable reaction vessel, 20 to 30 weight ~ of the total water needed is heated to a temperature in the range of 90 - 100~ C. Then 0.175 - 0.4 weight ~ cf a first thickener is added to the heated water, and the mixture is subjected to agitation until a product with the consistency of a paste is obtained. The remainder of the water necessary (to make up the 100 weight % of the cream base given the desired weight percentages of the additives) is added to the paste, and the resultant formulation is agitated until said paste is completely dissolved in the solution. Next, 0.5 - 3 weight % o~ a second thickener is added slowly with concomitant mixing until said second thickener is also completely dissolved. A first surfactant is then added, the mixture agitated thoroughly, and the ~3~6~

resultant solution is set aside.
Step 2: In a second suitable reaction vessel, the desired waxes, a third thiclcener and a second surfactant undergo thorough agitation and heating to a temperature in the range of 70 - 9o~c.
Step 3: Heat the product of step 1 to a temperature in the range of 70 - 80C. Under continual agitation, add t~e produGt of step 2 to the heated product of step 1.
A~ter the addition is completed, agitation is continued until a cream with a ~irm consistency and uni~orm composition ~s obtained. The firm and uniform cream is then cooled to a temperature in the range of 20 - 30Co Once the preparation of the carrier cream base is completed, the pharmaceutical cream can be manufactured using standard mixing procedure. The desired amount of the active ingredient is added to the cream prepared above and the mixture is subjected to agitation until the two -components are well dispersed. Next the sugar component is added, and the resultant formulation is agitated thoroughly. Finally, the moisture flow control ingredient is added and agitation is applied until a homogenous composition results.
The procedure outlined above is based on production of the topical cream product on a continuous basis. That is, the carrier cream base is utilized immediately after its production in the manufacture of the final product.
However, this need not be the case. The simple addition of preservative compound in an amount of about 0.05 to about 0.1% by weight of the cream base to the carrier cream base will allow for discontinuous production of the ultimate topical cream product. That is, the cream base is capable of being formulated at a separate time and/or production facility than the topical cream. Likewise, any combination of the cream base and some of the other three components 3~3~6~ ~8 may be combined separately from the ultimate product. For example, the cream base, sugar and moisture control agent may be preserved and shipped to another site where active ingredient is manufactured. The preservative may be any of those known in the art to preserve such cream bases, preferably povidone iodine or a paraben, for example, methylparaben and butylparaben.
The use of povidone iodine as the active ingredient provides a pharmaceutically effective cream having anti-infecti~e properties. Utilizing the povidone iodinecomplex rather than iodine itself offers the advantage of increased stability of the iodine in the resultant cream product and enhanced pharmaceutical acceptance without the sacrifice of the anti-infective properties of th~ elemental halogen compound. Also, povidone iodine is sugar compatible which contributes to the overall stability of the product cream.
A topical anti-infectiva composition of the present invention may be applied directly to the injured skin or indirectly to the skin through application to a dressing material or in any othar manner known in the art for the juxtaposition of a medicament in cream form with the affected area of the body.
The combination of anti-infective and tissue growth promotion activities of a composition of the present invention renders it useful for treating conditions involving open wounds or burns. The open wounds can be of the type resulting from a skin trauma such as gunshot and knife wounds as well as those induced by other means such as sores or carbuncles.
The unique combination of ingredients found in compositions of the present invention also results in excellent pharmaceutical acceptance. The replacement of elemental iodine with the povidone iodine complex produces . , .

.

~L 3 ~ L 7~ ~J

drastic improvement in this area. The incidence of skin irritation and staining as well as the onset of allergic reactions often brought on by elemental iodine is reduced very significantly since the PVP-iodine complex is both non-irritating and non-sensitizing. Also, the sugar and other additives are safe for use on human skin, inert to PYP-iodine, i.e., do not react with the complex to release elemental iodine, and compatible with PVP-iodine and each - other.
10 The amount of the active ingredient in the composition, i.e., the dosage required, depends on such factors as the type of injury or dysfunction, the degree of healing which has already been induced, if any, and the skin type of the patient. Those skilled in the art will make an assessment based on these factors and any others which become apparent in the specific case and use the appropriate strength formulation.
When a cosmetic cream is contemplated, the sugar requirement of said cream is reduced. That is, the cream may be formulated with a sugar content as low as 20% by weight of the product cream. This decrease is due to the reduction in the demand for nutrition supplied to the skin.
Obviously, a cosmetic designed for routine daily use as a moisturizer or some form of colorant does not require the tissue regenerative capability of, for example, a medicament useful for the treatment of open wounds wherein skin growth is absolutely essential to the healing process.
When the amount of sugar is adjusted, the quantity of cream base is oppositely altered to complete the cream composition.
The cosmetic compositions of the present invention may be applied directly to the skin by hand, applicator or in any other manner known in the art for the juxtaposition of a cosmetic in cream form with the desired area of ~3t~6~ ~

application.
The amount of active ingredient in the cosmetic topical cream, depends on such factors as the intended use of the cosmetic (a corrective moisturizer as opposed to a fortified colorant, for example) and the nature of the skin of the recipient (dry, normal, or oily, for example).
Those skilled in the art will make an assessment based on these factors and any others which become apparent in the case of a specific cosmetic and provide the appropriate relative amounts of ingredients.
The topical cream of the present invention exhibits enhanced storage stability properties. That is, the cream does not separate or suffer from the crystallization of the various components susp~nded in the cream for a long period of time. This results in an increased shelf life and enhanced usefulness of the topical formulation.
It is believed that the proposed moisture-control ingredient imparts much of the marked improvement in storage stability to the composition. This theory is contemplated due to the properties of the sugar ingredient of the cream. Sugars will dissolve in almost anything with a high moisture content. This characteristic is a serious detriment to the formation of a product with the consistency of a cream. However, the moisture control ingredient absorbs the excess moisture and stabilizes the equilibrium between the components of the product cream.
Thus, cream compositions containing an effective amount of a moisture control ingredient are capable of maintaining a high sugar concentration dispersed therein for long periods of time.
Examples Example 1: Anti-Infection Cream A. Preparation of the cream base Step 1: In a suitable reaction vessel, 174.5 ml of water 13~ 3'~3 is heated to 95C. 2.5 gm Methocel is then added, and the mixture is agitated until a paste is formed. 698 ml water cooled to 5C, is added, and agitation is subsequently applied until the thickener/water paste is completely dissolved. 15 gm Laponite is then added slowly with agitation until the thickener is completely dissolved. 10 gm Tergitol is added, and the resulting mixture is blended and set aside.
Step 2: In a second reaction vessel, 40 gm cétyl alcohol, 30 gm stearyl alcohol, 20 gm polyethylene glycol 400 and lO gm Polysorbate 80 are heated to 75C while agitation is supplied.
Step 3: The mixture of Step 1 above is heated to 750C
whereupon the product of Step 2 above is added to the newly heated product of Step l under conditions of constant agitation. Agitation is continued until a firm and uniform cream is obtained. The resultant cream base is cooled to room temperature.
B. Preparation of a Storage Stable Topical Composition 215 gm of the cream base of A above is mixed with 25 gm of povidone iodine until the two components are well dispersed. Next, 750 gm of sucrose is added and the mixture is agitated thoroughly. 10 gm of finely divided silicon dioxide is then added, whereupon the composition is agitated until the final product is homogenous.
Example 2 A. Anti-Infection Cream Step 1: In a suitable reaction vessel, 174.2 ml of water is heated to 93C. 3.0 gm Ethocel is then added, and the mixture is agitated until a paste is formed. 696.8 ml of water having been cooled to 5C is added, and agitation is subsequently applied until the thickener/water paste is completely dissolved. 12 gm of Laponite is then added slowly with agitation until the thickener is complet~ly 4~

~3~9 ~B

dissolved. 12 gm nonoxynol 9 is added, and the resulting mixture is blended and set aside.
Step 2: In a second reaction vessel, 20 gm ceresine, 40 gm cetyl alcohol, 10 gm beeswax and 20 gm polyethylene glycol 400 and 15 gm Tergitol are heated to 77c while agitation is supplied.
Step 3: The mixture of Step 1 above is heated to 77C
whereupon the product o~ Step 2 above is added to the newly heated product of Step 1 under conditions of constant lo agitation. Agitation is continued until a firm and uniform cream is obtained. The resultant cream base is cooled to room temperature.
B. Preparation of a Storage Stable Topical Composition 213 gm of the cream base of A above is mixed with 25 gm by povidone iodine until the two components are well dispersed. Next, 750 gm of glucose is added and the mixture is agitated thoroughly. 12 gm of finely divided silicon dioxide is then added, whereupon the composition is agitated until the ~inal product is homogenous.
Example 3: Anti-In~ection Cream A. Preparation of the cream base Stap 1: In a suitable r~action vessel, 171.6 ml of water is heated to 95C. 3.8 gm carboxymethyl cellulose is then added, and the mixture is agitated until a paste is formed. 656.6 ml of water having been cooled to 0C is added, and agitation is subsequently applied until the thickener/water paste is completely dissolved~ 21 gm of Ethocel is then added slowly with agitation until the thickener is completely dissolved. 12 gm Polysorbate~ 80 is added, and the resulting mixture is blended and set aside.
Step 2: In a second reaction vessel, 30 gm stearyl alcohol, 25 gm jojoba oil, 15 gm ceresine, 20 gm Methocel, and 15 gm Nonoxyno~ 9 are heated to 75C while agitation is supplied.

~C~;9~8 step 3: The mixture of Step l above is heated to 75C
whereupon the product of Step 2 above is added to the newly heated product of Step 1 under conditions of constant agitation.
Agitation is continued until a firm and uniform cream is obtained. The resultant cream base is cooled to room temperature.
B. Preparation of a Storage Stable Topical Composition - 205 gm of the cream base of A above is mixed with 25 gm of povidone iodine until the two components are well dispersed. Next, 750 gm of fructose is added and the mixture is agitated thoroughly. 20 gm o~ finely divided silicon dioxide is then added, whereupon the composition is agitated until the final product is homogenous.
Example 4: Anti-Infection Cream . Preparation of the cream base Step l: In a suitable reaction vessel, 176.~ ml of water is heated to 100C. 1.8 gm Natrosol is then added, and the mixture is agitated until a paste is formed. 705.8 ml of water having b~en cooled to 5~C is added, and agitation is subsequently applied until the thickener/water paste is completely dissolved. 13 gm of Laponite is then added slowly with agitation until the thickener is completely dissolved. 5.5 gm Tergitol is added, and the resulting mixture is blended and set aside.
Step 2: In a second reaction vessel, 30 gm cetyl alcohol, 30 gm synthetic candelilla, 17.5 gm carboxymethyl-cellulose, and 20.0 gm Polysorbate 80 are heated to 72C
while agitation is supplied.
Step 3: The mixture of Step 1 abov~ is heated to 72C
whereupon the product of Step 2 above is added to the newly heated product of Step 1 under conditions of constant agitation. Agitation is continued until a firm and uniform croam i~ obtain~d. Th~ rQ~ultant or~am ba~o i~ coolQd ~o .

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room temperature.
B. Preparation of a storage Stable Topical composition 243 gm of the cream base of A above is mixed with 35 gm of Vitamin E until the two components are well dispersed.
Next, 700 gm of sucrose is added and the mixture is agitate~ thoroughly. 22 gm of anhydrous lanolin is then added, whereupon the composition is agitated until the final product is homogenous.
- Exam~le 5: Anti-Infection C'ream A. Preparation of the cream base Step l: In a suitable reaction vessel, 172.6 ml of water is heated to 97C. 2.0 gm Methocel is then added, and the mixture is agitated until a paste is formed. 690.4 ml of water having been cooled to 5C is added, and agitation is subsequently applied until the thickener/water paste is completely dissolved. 25 ~n of Methocel is then added slowly with agitation until the thickener is -completely dissolved. lO gm Tergitol is added, and the resulting mixture is blended and set aside.
Step 2: In a second reaction vessel, 40 gm beeswax, 30 ~n jojoba oil, 20 gm polyethylen~ glycol 400, and lO gm Polysorbate 80 are heated to 75~C while agitation is supplied.
Step 3: The mixture of Step l above is heated to 75~C
whereupon the product of Step 2 above is added to the newly heated product of Step l under conditions of constant agitation. Agitation is continued until a firm and uniform cream is obtained. The resultant cream base is cooled to room temperature.
B. Preparation of a Storage Stable Topical Composition 295 gm of the cream base of A above is mixed with 25 gm of Vitamin E until the two components are well dispersed.
Next, 670 ~n of sucrose is added and the mixture is agitated thoroughly. 10 gm of finely divided silicon ;~3~

dioxide is then added, whereupon the composition is agitated until the final product is homogenous.
Example 6: Anti-Infection Cream A. Preparation of the cream base Step 1: In a suitabls reaction vessel, 176 ml of water is heated to 98C. 2.5 gm Methocel is then added, and the mixture is agitated until a paste is formed. 704 ml of water having been cooled to oC is added, and agitation is subsequently applied until the thickener/water paste is completely dissolved. 7.5 qm of Laponite is then added slowly with agitation until the thickener is completely dissolved. lQ gm Tergitol is added, and the resulting mixture is blended and set aside.
Step 2: In a second reaction vessel, 20 gm cetyl alcohol, 40 gm natural candelilla, 10 gm stearyl alcohol, :~ and 20 gm Nethocel, and 10 gm Tergitol are heated to 75C
while agitation is supplied.
Step 3: The mixture of Step 1 above is heated to 75C
whereupon the product of S*ep 2 above is added to the newly heated product of Step 1 under conditions of constant agitation. Agitation is continued until a firm and uniform cream is obtained. The resultant cream base is cooled to room temperature.
B. Preparation of a Storage Stable Topical Composition 105 gm of the cream base of A above is mixed with 35 gm of povidone iodine until the two components are well dispersed. Next, 850 gm of sucrose is added and the mixture is agitated thoroughly. 10 gm of cholesterol is th~n added, whereupon the composition is agitated until the final product is homogenousO
Example 7: Anti-Infection Cream A. Preparation of the cream base Step 1: In a suitable reaction vessel, 174.8 ml of water is heated to 90C. 2 gm Natrosol is then added, and J~3~ ? B

the mixture is agitated until a paste if formed. 699.2 ml of water having been cooled to 0C is added, and agitation is subsequently applied until the thickener/water paste is completely dissolved. 12 gm of Natrosol is then added slowly with agitation until the thickener is completely dissolved. lo gm Polysorbate 80 is added, and the r~sulting mixture is blended and set aside.
Step 2: In a second reaction vessel, 30 gm ceresine, 25 gm carnauba, 15 gm cetyl alcohol, and 20 gm carboxymethyl cellulose, and 12 gm Polysorbate 80 are heated to 77C
while agitati~n is supplied.
Step 3: The mixture of Step 1 above is heated to 77C
whereupon the product of Step 2 above is heated to 77C
whereupon the product of Step 2 above is added to the newly heated product of Step l under conditions of constant agitation. Agitation is continued until a firm and uniform cream is obtained. The resultant cream base is cooled to room temperature.
B. Preparation of a Storage Stable Topical Composition 93 gm of the cream base of A above is mixed with 45 gm of povidone iodine until the two components are well dispersed. Next, 850 gm of glucose is added and the mixture is agitated thoroughly. 12 gm of finely divided silicon dioxide is then added, whereupon the composition is agitated until the final product is homogenous.
Example 8: Anti-Infection Cream A. Preparation of the cream base Step 1: In a suitable reaction vessel, 175 ml of water is heated to 92DC. 2 gm Ethocel is then added, and the mixture is agitated until a paste is formed. 702.8 ml of water having been cooled to 5C is added, and agitation is subsequently applied until the thickener/water paste is completely dissolved. 12 gm of Ethocel is then added slowly with agitation until the thickener is completely ~3(~

dissolved. 10 gm Polysorbate 80 i5 added, and the resulting mixture is blended and set aside.
Step 2: I~ a second reaction vessel, 30 gm stearyl alcohol, 30 gm natural candelilla, 17.5 gm Me~hocel, and 20 gm Polysorbate 80 are heated to 72C while agitation is supplied.
Step 3: The mixture of Stlep 1 above is heated to 72C
whereupon the product of Step 2 a-bove is added to the newly heated product of Step 1 under conditions of constant agitation. Agitation is continued until a firm and uniform cream is obtained. The resultant cream base is cooled to room temperature.
B. Preparation of a Storage Stable Topical Composition 283 gm of the cream base of A above is mixed with 55 gm of povidone iodine until the two components are well dispersed. Next, 650 ~m of glucose is added and the mixture is agitated thoroughly. 12 gm of finely divided silicon dioxide is then added, whe-reupon the composition is agitated until the final product is homogenous.
Bxample 9: Anti-Infection Cream A. Preparation of the cream base Step 1: In a suitable reaction vessel, 174.8 ml of water is heated to 91C. 2 gm carboxymethyl cellulose is then added, and the mixture is agitated until a paste is formed. 699.2 ml of water having been cooled to 5C is added, and agitation is subsequently applied until the thickener/water paste is completely dissolved. 12 ym of Methocel is then added slowly with agitation until the thickener is completely dissolved. 12 gm Tergitol is added, and the resulting mixture is blended and set aside.
Step 2: In a second reaction vessel, 40 -gm cetyl alcohol, 30 gm stearyl alcohol, 20 gm polyethylene glycol 400, and 10 gm nonoxynol 9 are heated to 79C while agitation is supplied.

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Step 3: The mixture of Step 1 above is heated to 79C
whereupon the product of Step 2 above is added to the newly heated product of Step 1 under conditions of constant agitation. Agitation is continued until a firm and uniform cream is obtained. The resultant cream base is cooled to room temperature.
B. Preparation of a Storage Stable Topical Composition 215 gm of the cream base of A above is mixed with 6S gm `of povidone iodine until the two components are well dispersed. Next, 700 gm o~ glucose is added and the mixture is agitated thoroughly. 20 gm o~ ~inely divided silicon dioxide is then added, whereupon the composition is agitated until the final product is homo~enous.
Example 10: Cosmetic Cream A. Preparation of the cream base Step 1: In a suitable reaction vessel, 174.6 ml of water is heated to 95C. 2.5 gm Ethocel is then added, and the mixture is agitated until a paste is formed. 698.4 ml of water having been cooled to 5~C is added, and agitation is subsequently applied until the thickener/water paste is completely dissolved. 12 gm o~ Methocel is then added slowly with agitation until the thickener is completely dissolved. 7.5 gm Tergitol is added, and the resulting mixture is blended and set aside.
25Step 2: In a second reaction vessel, 20 gm ceresine, 40 gm stearyl alcohol, 10 gm beeswax, 20 gm Laponite, and 15 gm Terqitol are heated to 750C while agitation is supplied.
Step 3: The mixture of Step 1 above is heated to 75C
whereupon the product of Step 2 above is added to the newly heated product of Step 1 under conditions of constant agitation. Agitation is continued until a firm and uniform cream is obtained. The resultant cream base is cooled to room temperature.
B. Preparation of a Storage Stable Topical Composition , ~

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600 gm of the cream hase of A above is mixed with 25 gm of aloe until the two components are well dispersed. Next, 350 gm of sucrose is added and the mixture is agitated thoroughly. 25 gm of finely divided silicon dioxide is then added, whereupon the composition is agitated until the final product is homogenous.
Fxam~le 11: Cosmetic Cream A. Preparation of the cream base Step 1: In a suitable reaction vessel, 172.9 ml of water to 96C. 3 gm Laponite is then added, and the mixture is agitated until a paste is formed. 691.6 ml of water having been cooled to 0C is added, and agitation is subsequently applied until the thickener/water paste is completely dissolved. 20 gm of Ethocel is then added slowly with agitation until the thickener is completely dissolved. 7.5 gm Polysorbate 80 is added, and the resulting mixture is blended and sat aside.
Step 2: In a second reaction vessel, 30 gm cetyl alcohol, 25 gm carnauba, 15 gm beeswax, 20 gm Natrosol, and gm Tergitol are heated to 75C while agitation is s~pplied.
Step 3: The mixture of Step 1 above is heated to 75~C
whereupon the product of Step 2 above is added to the newly heated product of Step 1 under conditions of constant agitation. Agitation is continued until a firm and uniform cream is obtained. The resultant cream base is cooled to room temperature.
B. Preparation of a Storage Stable Topical Composition 545 gm of the cream base of A above is mixed with 35 gm of aloe until the two components are well dispersed. Next, 400 gm of sucrose is added and the mixture is agitated thoroughly. 20 gm anhydrous lanolin is then added, whereupon the composition is agitated until the final product is homogenous.

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Example 12: Cosmetic Cream A. Preparation of the cream base Step 1: In a suitable reaction vessel, 173.8 ml of water is heated to 100C. 3.5 gm Methocel is then added, and the mixture is agitated until a paste is formed. 695.2 ml of water having heen cooled to 5C is added, and agitation is subsequently applied until the thickener/water paste is completely dissolved. 20 gm of Ethocel is then added slowly with agitation until the thickener is completely dissolved. 10 gm Tergitol is added, and the resulting mix~ure is blended and set aside.
Step 2: In a second reaction vessel, 30 gm stearyl alcohol, 30 gm cetyl alcohol, 17.5 gm carboxymethyl cellulose, and 20 gm Polysorbate 80 are heated to 75C
while agitation is supplied.
Step 3: The mixture of Step 1 above is heated to 75C
whereupon the product of Step 2 above is added to the newly heated product of Step 1 under conditions of constant agitation. Agitation is continued until a firm and uniform cream is obtained. The resultant cream base is cooled to room temperature.
B. Preparation of a Storage Stable Topical Composition 545 gm of the cream base of A above is mixed with 45 gm of aloe until the two components are well dispersed. Next, 400 gm of glucose is added and the mixture is agitated thoroughly. 10 gm of finely divided silicon dioxide is then added, whereupon the composition is agitated until the final product is homogenous.
Example 13: Cosmetic Cream A. Preparation of the cream base Step 1: In a suitable reaction vessel, 174.3 ml of water is heated to 95C. 3.5 gm Ethocel is then added, and the mixture is agitated until a paste is formed. 697.2 ml of water having been cooled to 5C is added, and agitation ~3~

is subsequently applied until the thickener/water paste is completely dissolved. 15 gm of Methocel is then added slowly with agitation until the thickener is completely dissolved. 10 gm Tergitol is added, and the resulting mixture is blended and set aside.
Step 2: In a second reaction vessel, 40 gm ceresine, 30 gm stearyl alcohol, 20 gm Methocel, and 10 gm Tergitol are heated to 72C while agitation is supplied.
Step 3: The mixture of Step 1 above is heated to 72C
whereupon the product of Step 2 above is added to the newly heated product of Step 1 under conditions of constant agitation. Agitation is continued until a firm and uniform cream is obtained. The resultant cream base is cooled to room temperature.
B. Preparation of a Storage Stable Topical Composition 505 gm of the cream base of A above is mixed with 25 gm of Vitamin E until the two components are well dispersed.
Next, 450 gm of sucrose is added and the mixture is agitated thoroughly. 20 gm of finely divided silicon dioxide is then added, whereupon the composition is agitated until the final product is homogenous.
Example 14: Cosmetic Cream A. Preparation of the cream base Step 1: In a suitable reaction vessel, 177.1 ml of water is heated to 93C. 1.8 gm of Methoc~l is then added, and the mixture is agitated until a paste is formed. 708.6 ml of water having been cooled to 5C is added, and agitation is subsequently applied until the thickener/water paste is completely dissolved. 15 gm of Ethocel is then added slowly with agitation until the thickener is completely dissolved. 10 gm Tergitol is added, and the resulting mixture is blended and set aside.
Step 2: In a second reaction vessel, 30 ~m cetyl alcohol, 30 gm stearyl alcohol, 17.5 gm polyethylene glycol ~3~

400, and 10 gm Polysorbate 80 are heated to 75C while agitation is supplied.
Step 3: The mixture of Step 1 above is heated to 75C
whereupon the product of Step 2 above is added to the newly heated product of Step 1 under conditions of constant agitation. Agitation is continued until a firm and uniform cream is obtained. The resultant cream base is cooled to room tempsrature.
B. Preparation of a Storage Stable Topical Composition 505 gm of the cream base of A above is mixed with 35 gm of Vitamin E until the two components are well dispersed.
Next, 450 gm of fructose is added and the mixture is agitated thoroughly. 10 gm of finely divided silicon dioxide is then added, whereupon the composition is agitated until the final product is homogenous.
Example 15: Cream Base Suitable for Discontinuous Processing A. Preparation of the cream base Step 1: In a suitable reaction vessel, 174.35 ml of water is heated to 95C. 2.5 gm Methocel is then added, and the mixture is agitated until a paste is formed.
697.40 ml of water having been cooled to 5C is added, and agitation is subsequently applied until the thickener/water paste is completely dissolved. 15 gm of Laponite is then added slowly with agitation until the thickener is completely dissolved. 10 gm Tergitol is added, and the resulting mixture is blended and set aside.
Step 2: In a second reaction vessel, 40 gm cetyl alcohol, 30 gm stearyl alcohol, 20 gm polyethylene glycol 400 and 10 gm Polysorbate 80 are heated to 75C while agitation is supplied.
Step 3: The mixture of Step 1 above is heated to 75C
whereupon the product of Step 2 above is added to the newly heated product of Step 1 under conditions of constant agitation. Agitation is continued until a firm and uniform cream is obtained. The resultant cream base is cooled to room temperature.
Step 4: Add 0.75 gm of povidone iodine and agitate until the resulting, preserved cream base is homogenous throughout.
It is clear that the above examples are by way of illustration only and various modifications may be made in the nature of the composition without departing from the spirit and scope of the invention.

Claims

1. A storage stable topical composition comprising:
(a) about 5 to about 30% by weight of a cream base wherein said cream base comprises:
(i) about 5 to about 10% by weight of one or more topically acceptable waxes;
(ii) about 0.01 to about 5% by weight of one or more topically acceptable thickeners;
(iii) about 0.5 to about 3% by weight of one or more topically acceptable surfactants; and (iv) the balance being substantially water;
(b) about 0.1 to about 7% by weight of topically active ingredients;
(c) about 50 to about 95% by weight of a sugar; and (d) about 0.5 to about 2.5% by weight of a moisture control agent.

2. A storage stable composition of claim 1 wherein the active ingredient is selected from povidone iodine, bacteriostatic agents, antibiotics, anti-inflammatory agents, microbicidal agents and vitamins.

3. A storage stable topical composition of claim 1 wherein the wax is selected from cetyl alcohol, stearyl alcohol, beeswax, natural candelilla, synthetic candelilla, carnauba, jojoba oil and ceresine or a combination thereof.

4. A storage stable topical composition of claim 1 wherein the thickener is a synthetic clay, a cellulose ether, polyethylene glycol or a combination thereof.

5. A storage stable topical composition of claim 1 wherein the surfactant is a polyethylene glycol ether or a sorbitan monosleate or a combination thereof.

6. A storage stable topical composition of claim 1 wherein the moisture control agent is finely divided silicon dioxide, anhydrous lanolin or cholesterol.

7. A storage stable topical composition of claim 2 wherein the active ingredient is povidone iodine.

8. A storage stable composition comprising.
(a) about 5 to about 30% by weight of a cream base wherein said cream base comprises:
(i) about 5 to about 10% by weight of one or more topically acceptable waxes;
(ii) about 0.01 to about 5% by weight of one or more topically acceptable thickeners;
(iii) about 0.5 to about 3% by weight of one or more topically acceptable surfactants; and (iv) the balance being substantially water;
(b) about 50 to about 95% by weight of a sugar; and (c) about 0.5 to about 2.5% by weight of a moisture control agent.

9. A storage stable cosmetic composition comprising:
(a) about 5 to about 70% by weight of a cream base wherein said cream base comprises:
(i) about 5 to about 10% by weight of one or more topically acceptable waxes;
(ii) about 0.01 to about 5% by weight of one or more topically acceptable thickeners;
(iii) about 0.5 to about 3% by weight of one or more topically acceptable surfactants; and (iv) the balance being substantially water;
(b) about 0.1 to about 7% by weight of a topically active ingredient;
(c) about 20 to about 95% by weight of a sugar; and (d) about 0.5 to about 2.5% by weight of a moisture control agent.

10. A storage stable cosmetic composition of claim 9, wherein the active ingredient is selected from aloe and vitamins.

11. A storage stable cosmetic composition of claim 9 wherein the wax is selected from cetyl alcohol, stearyl alcohol, beeswax, natural candelilla, synthetic candelilla, carnauba, jojoba oil and ceresine or a combination thereof.

12. A storage stable cosmetic composition of claim 9, wherein the surfactant is polyethylene glycol, sorbitan monooleate or a combination thereof.

13. A storage stable cosmetic composition of claim 9, wherein the thickener is a synthetic clay, a cellulose ether, polyethylene glycol or a combination thereof.

14. A storage stable cosmetic composition of claim 9, wherein the moisture control agent is finely divided silicon dioxide, anhydrous lanolin or cholesterol.

15. A method of imparting stability to a topical, sugar containing cream, comprising adding to the cream a moisture control agent in an amount effective to provide storage stability to the cream.

16. A method of imparting storage stability of claim 15, wherein the moisture control agent is finely divided silicon dioxide in the amount of about 0.5 to about 2.5% by weight of the cream.

17. In a topical cream, the improvement comprising the addition to the cream of a sugar and a moisture control agent in an amount sufficient to provide storage stability to the cream.

18. A topical cream of claim 17, wherein the moisture control agent is finely divided silicon in the amount of about 0.5 to about 2.5% by weight of the cream.