KR20030049558A - Cosmetic products which have lightening effect using water in oil in water(W/O/W) multiple liposome system with stabilized arbutin and their manufacturing methods - Google Patents

Abstract

The present invention relates to a whitening cosmetic composition containing arbutin stabilized in multiple liposomes of water / oil phase / water phase (hereinafter referred to as “W / O / W”), and a method for preparing the same. Emulsion of water-oil phase (hereinafter referred to as "W / O") is prepared by mixing and emulsifying with an aqueous phase containing arbutin using an ester-based lipophilic surfactant as a medium. In addition to the oil phase containing the sucrose cocoate-based surfactant to induce the secondary emulsification, and then added to the water phase to emulsify to form a large lamellar structure in the water phase to form a multiple liposome structure By providing the whitening cosmetic composition which has, and its manufacturing method, not only the skin affinity is excellent but also the glass of arbutin which exists in an inside by the emulsion structure which consists of several layers is optimized. Suppressed to be devised to make a high sustained effect than the formulation of the emulsion form a conventional oil / water (the oil in water, hereinafter "O / W" D).

Description

Cosmetic products containing have lightening effect using water in oil in water (W / O / W) multiple liposome system with stabilized arbutin and their manufacturing methods}

The present invention relates to a whitening cosmetic composition containing arbutin stabilized in a W / O / W multiple liposomes and a method for producing the same, which is mixed with an arbutin-containing aqueous phase using a nonionic ester-based lipophilic surfactant as a medium After emulsification to make the emulsion of the first stable W / O form, it is added to the oil phase containing the sucrose cocoate-based surfactant to induce the second emulsification, and then added to the water phase again By emulsifying to form a large lamellar structure in the water phase to provide a whitening cosmetic composition having a multi-liposomal structure and a method for producing the same, not only has excellent skin affinity, but also the release of arbutin present in the inner phase by an emulsion structure composed of several layers. Can be suppressed as much as possible to produce a high sustained effect compared to conventional O / W emulsion formulations. Will.

In general, the W / O type formulation is composed of an inner phase of the water phase and a continuous phase surrounding the oil to stabilize the arbutin component of the aqueous phase, and the continuous phase prevents deformation due to external environmental stimuli such as water or sebum due to the oil. At the same time, it has the advantage of being able to maintain moisture retention and makeup sustainability for a long time.

On the other hand, such a W / O type formulation has a disadvantage in that the feeling of use, such as sticky as a lot of oily feeling in the feeling and absorbency, it did not meet the needs of the general consumer.

Therefore, in order to improve such a feeling, a water / silicone phase (hereinafter referred to as “W / S”) form of a formulation is developed by using a silicone surfactant by replacing a continuous oil with silicon to improve the usability. We tried to overcome the problem of usability, which is a disadvantage of W / O emulsion, while maintaining the advantages of form.

But. These formulations also have problems such as lowering the absorption efficiency of the active ingredient in the skin, and also because the price of silicone oil is higher than the general oil, the overall product is expensive, which puts a lot of pressure on the general consumer. .

In addition, the O / W type of formulation is excellent in the use feeling, and the stability of the product is superior to the general W / O or W / S type emulsion, but the continuous phase is water-soluble and exposed to the external environment. Because of this, it was very difficult to stabilize the water-soluble active ingredient.

Recently, as a means to improve all problems such as stabilization, usability, moisturizing, longevity and skin permeability of water-soluble active ingredients, micro-fluidizers have generally been selected as the method of dividing the particle size into very small units. Mechanical manufacturing by physical force using expensive equipment such as microfluidizer [19th IFSCC Conference, 1996] and chemically ether-based surfactants using one-step or two-step An improvement was presented by attempting multiple emulsions in a two-step process.

However, in the above-mentioned improvement, in particular, in the case of the former, special expensive equipment has to be used, thereby increasing the manufacturing cost, and in the latter case, a chemically synthesized special surfactant must be used. Not only is it difficult to maintain stability at the same time, and in particular, there are still problems such as skin irritation caused by ether-based surfactants, and research on this is ongoing.

Accordingly, the present invention is a sucrose cocoate based sucrose cocoate, which is an emulsifier derived from nature and a W / O emulsion primarily stabilized arbutin in the water phase using an ester-based lipophilic surfactant known to have low skin irritation. By using a surfactant to prepare a composition having a final liposome structure in the form of W / O / W, it has not only excellent skin affinity, but very mild, no irritation, excellent feeling of use and moisturizing, and an aqueous soluble arbutin. By enclosing the innermost inner phase and stabilizing by multiple membranes, it is possible to maintain the sustainability of the effect of use, and to realize a drug delivery system that is more stably delivered to the desired site, and has the stability and large-scale multiple multiple emulsions. More stabilized whitening with arbutin by liposome structure A whitening cosmetic composition containing arbutin stabilized in multiple liposomes in an aqueous / oil phase / aqueous phase having only its advantages in conventional formulations such as the W / O emulsion, O / W emulsion, and the like so as to obtain a material The purpose is to provide.

1 is a micrograph of emulsion particles of a whitening cosmetic according to the present invention.

FIG. 2 is a micrograph showing an enlarged emulsion particle of FIG. 1 showing that another phase particle containing arbutin forms a separate liposome.

As described above, the present invention provides a whitening cosmetic composition composed of a multi-liposome structure containing arbutin, which is a stabilized whitening active ingredient, as a means for solving the conventional problems, wherein the whitening active ingredient arbutin is formed in the W / O emulsion. In addition, the micelle (micelle) is characterized in that it has a W / O / W multiple liposome structure dispersed in another water phase.

Here, the composition is 0.3-1.0 wt% hydrogenated castor oil, 0.5-1.0 wt% polyglyceryl isostearate, 2.0-4.0 wt% mineral oil, 0.01-0.1 wt% zinc sulfate, 0.1-6.0 wt% arbutin, Stearic acid 0.3-1.0 wt%, cetanol 1.0-4.0 wt%, glyceryl trioctanoate 1.0-4.0 wt%, sucrose cocoate 1.0-5.0 wt%, sorbitan sesquioleate 0.5-2.0 wt%, silicone 0.2-2.0 wt% oil, 0.1-2.0 wt% sodium glutamate combined with hydrogenated fatty acid, 3.0-8.0 wt% glycerin, 0.01-0.1 wt% EDTA, polyglyceryl methacrylate 1.0-5.0 wt% It is composed of 0.1 to 5.0% by weight of thickener, 0.1 to 5.0% by weight of neutralizer, 0.2 to 1.0% by weight of preservative, and 48.7 to 88.38% by weight of purified water. The particle size of the liposome is generally 0.1 to 2.0 μm.

The present invention to provide a whitening cosmetic composition containing arbutin stabilized in multiple liposomes of the water phase / oil phase / water phase,

First stage

Mixing the purified water, the electrolytic material and the whitening active ingredient arbutin with an ester-based nonionic surfactant, polyglyceryl isostearate and a non-polar oil to firstly emulsify to obtain a W / O emulsion;

2nd step

Mixing the W / O emulsion obtained in the first step with fatty acid, cetanol, glyceryl trioctanoate, sucrose cocoate-based surfactant, sorbitan sesquioleate and silicone oil to form an oil phase;

3rd step

Forming an aqueous phase by mixing purified water, glycerin, sodium glutamate combined with hydrogenated fatty acid, EDTA, and polyglyceryl methacrylate in a separate dissolution tank;

4th step

Mixing the oil phase part and the water phase part prepared above using a homo mixer and performing secondary emulsification, and then cooling them to about 30 ° C. to 35 ° C .;

5th step

Adding a thickener and a neutralizing agent to the mixture obtained in the fourth step and dispersing using a homomixer and then cooling and defoaming to room temperature.

In particular, in the manufacturing method according to the present invention, various fragrances, preservatives and other cosmetic active ingredients (Broussonetia Extract, Ethyl Axcorbyl) as necessary between the fourth and fifth steps Ether), oil soluble licorice extract (Oil Soluble Licovice Extract) may further comprise the step of adding and mixing at least one or more.

Hereinafter, the manufacturing method of the cosmetic composition according to the present invention will be described in more detail.

First, in the first step, purified water containing an electrolytic material and arbutin is mixed with an ester-based nonionic surfactant, polyglyceryl isostearate, and a nonpolar oil to give a primary emulsification to obtain a W / O emulsion.

At this time, the ester-based nonionic surfactant and the polyglyceryl isostearate are used as the mediator to emulsify the water phase part and the oil phase part. Here, the ester nonionic surfactant is a lipophilic type, it is preferable to use a low HLB (hydrophilic lipophilic balance) value in the range of 3.0 to 7.0, such as casted oil, polyethylene glycol dipolyhydroxy stearate Etc.

On the other hand, it is preferable to use a mineral oil, squalane, polydecene and the like as the non-polar oil, it is preferable to use zinc sulfate, urea, sodium chloride, magnesium sulfate and the like as the electrolytic material.

Next, in the second step, an oil phase part containing fatty acid, cetanol, glyceryl trioctanoate, sucrose cocoate-based surfactant, sorbitan sesquioleate, silicone oil, tocopherol acetate and preservatives in a separate dissolution tank. After preparing, the W / O emulsion containing arbutin prepared in the first step was added thereto, heated to 80 ° C., and dissolved by mixing to prepare an oil phase part for secondary emulsification.

In this case, the fatty acid, cetanol and glyceryl trioctanoate are used to enhance the internal and external wounds of liposomes according to the lamellar liquid crystal structure, and the silicone oil suppresses bubble generation that hinders the improvement of feeling and the formation of an emulsion. It is used to. The fatty acid may be stearic acid, myristic acid, palmitic acid or the like.

In the third step, purified water, glycerin, sodium glutamate combined with hydrogenated fatty acid, EDTA, polyglyceryl methacrylate, and neutralizing agent are heated and mixed to a separate dissolution tank separately from the first to second steps. Prepare the award.

In this case, the glycerin is involved in the large-scale lamellar liquid crystal structure during the second emulsification and at the same time gives the skin moisturization when applying the skin, the EDTA is a chelating material to hold the free ions in the prescription acts as a cheating agent. In addition, the polyglyceryl methacrylate is to serve to strengthen the internal phase of the multiple emulsion.

In the fourth step, the oil phase part prepared in the second step (containing the W / O emulsion containing the first stabilized arbutin) and the water phase part prepared in the third step are mixed and secondary emulsified using a homo mixer, and then 30 ~ Cool down to 35 ° C.

Such secondary emulsification is preferably carried out at 70 to 80 ° C. for 3 minutes at 3,000 to 4,000 rpm. At this time, a large-scale multiple liposome structure is formed, and spontaneous phase is generated by ionic bonds such as hydrophobic / hydrophilic bonds and hydrogen bonds.

Further, if necessary, another water-soluble active ingredient or the like may be added before the phase change occurs so that the water-soluble active ingredient and the like may be included at the same time as the phase change occurs.

Finally, in the fifth step, a thickener and a neutralizing agent are added to the mixture, dispersed using a homomixer, cooled to room temperature, and defoamed.

Here, the thickener is present in the water phase to give a suitable viscosity to the product, is used to stabilize and strengthen the final formed W / O / W multi-emulsion, in particular in the present invention a strong ionic carboxyvinyl polymer Is preferably used.

In addition, the neutralizing agent is added after the addition of the thickener to adjust the pH of the product, it is preferable to use diethanolamine, triethanolamine, arginine and the like.

After the neutralizing agent was added, the mixture was dispersed at 3,000 to 3,500 rpm for 2 minutes using a homo mixer, and finally cooled to 15 to 28 ° C. using a paddle mixer, and degassed at the same time. It is to complete the stabilized W / O / W multiple emulsion.

As such, the emulsified composition according to the present invention can realize the W / O / W multi-emulsion state through the large lamellar state from the W / O emulsion state and finally, thereby restraining moisture escape inside the cosmetics by the multiple liposomes as much as possible. In addition to providing moisturizing properties, it is very similar to the structure such as skin lipid membrane, so it has excellent skin affinity when applied to the skin, and can significantly reduce the irritation caused by physicochemical / environmental stress. Drug delivery can be achieved by incorporating another suitable active ingredient into each phase to realize stabilization of the active ingredient, as well as delivering the stabilized active ingredient to the desired cell site in a stable state when applied to the skin. It is possible to suggest means available as a vehicle for a drug delivery system.

In the following, the present invention will be described in more detail based on examples according to the present invention, but the present invention is not limited to the following examples.

EXAMPLE 1, 2, 3

Examples 1, 2 and 3 were prepared in the same manner as follows according to the composition ratio shown in the following [Table 1].

First, phase A containing arbutin was added to phase B and first emulsified using a homomixer (3,500 rpm) to make a W / O emulsion.In a separate dissolution tank, oil phase (C phase) and water phase (D phase) ) Are dissolved by heating to 80 ° C., respectively, and then the W / O emulsion prepared in advance in the oil phase part (C phase) is warmed. Next, the aqueous phase (D phase) prepared above and the oil phase portion (A, B, C phase) containing the arbutin stabilized W / O emulsion were mixed and emulsified by a homo mixer (3,500 rpm) for 2 minutes. Cool down to 35 ° C. Finally, preservative (E phase) was added and dispersed using a paddle mixer, followed by thickening and neutralizing agent (F phase), followed by dispersion for 2 minutes with a homo mixer (3,200 rpm). Defoaming was performed while cooling to ℃ to prepare a cosmetic having a W / O / W multiple liposome structure.

Phase Ingredient (% by weight) Example One 2 3 A W / O Emulsion Purified water 10.0 10.0 10.0 Zinc sulfate 0.1 0.1 0.02 Arbutin 5.0 5.0 5.0 B Polyglyceryl isostearate 1.0 1.0 0.5 Mineral oil 4.0 4.0 2.0 Hydrogenated castor oil 1.0 1.0 0.3 C The upper part Stearic acid 1.0 1.0 1.0 Cetanol 4.0 1.0 3.0 Glyceryl Trioctanoate 4.0 3.0 2.0 Sucrose Cocoate 3.0 3.0 2.0 Sorbitan sesquioleate 1.0 1.0 0.5 Silicone oil 2.0 2.0 0.2 D Award Purified water 53.15 56.95 60.16 glycerin 3.0 5.0 8.0 EDTA 0.05 0.05 0.02 Sodium Glutamate with Hydrogenated Fatty Acids 2.0 2.0 2.0 Polyglyceryl methacrylate 5.0 3.0 2.0 E antiseptic Paraoxybenzoic Acid Ester 0.5 0.5 0.5 F Thickener Carboxy vinyl polymer Carbopol (BF GoodRich) 0.1 0.2 0.4 corrector Triethanolamine 0.1 0.2 0.4

Comparative Example 1: W / O Type Emulsion

Comparative Example 1 is a cosmetic in the form of W / O is generally prepared by using a homo mixer by dividing each of the water phase and the oil phase and then mixed, the composition ratio is as shown in the following [Table 2].

First, warm the oil phase part (A phase) and the water phase part (B phase) to 70 ° C., respectively, and sufficiently disperse each of them, gradually mixing the aqueous phase part with the oil phase, and dispersing it for 20 minutes at 3,500 rpm using a homo mixer. After cooling to ℃ the active ingredient and the flavor was added. Then, the mixture was cooled to 28 ° C. while mixing at 3,500 rpm for 10 minutes using a homo mixer, and then defoamed to prepare a cosmetic in the form of W / O.

Phase ingredient Content (% by weight) A The upper part Glyceryl Sorbitan 3.0 PEG-40 sorbitan peroleate 1.0 Magnesium stearate 0.5 Microcrystalline Wax 1.5 Candelilla wax 0.5 Isohexadecane 12.0 Isopropyl myristate 6.0 Almond oil 3.0 Silicone oil 0.5 Antioxidant 0.05 Silica 0.3 B Award Purified water 61.45 glycerin 1.5 Propylene glycol 1.25 Sorbitol 1.25 Magnesium sulfate 0.7 antiseptic 0.5 C Active ingredient Cosmetic Active Ingredients and Fragrances 5.0

(Microcrystalline Wax: Multi Wax, Witco,

Candelila Wax: Candellila Wax, Koster,

Antioxidants: Tocopherol Acetate,

Preservative: Paraoxybenzoic acid ester,

Cosmetic active ingredient: arbutin,

Fragrance: Combination Spices)

Comparative Example 2: O / W-type gel emulsion

In comparison 2 is a gel emulsion of O / W type, generally divided into an aqueous phase and an oil phase was emulsified by using a homo mixer, the composition ratio is as shown in the following [Table 3].

First, warm the oil phase part (A phase) and the water phase part (B phase) to 80 ° C., and then add the oil phase part (A phase) to the water phase part (B phase), and then disperse it for 8 minutes at 3,000 rpm using a homo mixer. After cooling to 50 ℃. Then, the active ingredient and the flavor was added, cooled to 28 ℃ and degassed to prepare a cosmetic in the form of O / W.

Phase ingredient Content (% by weight) A The upper part Polyglyceryl Pentastearate 1.5 Behenyl alcohol 1.2 Glyceryl Stearate 1.2 PEG-100 Castor Oil 1.0 Squalane 3.0 Triacylhexanoin 3.0 Silicone oil 6.0 antiseptic 0.5 B Award Purified water 57.5 Butylene Glycol 5.0 Xanthan gum (2% aqueous solution) 15.0 EDTA 0.1 C Active ingredient Cosmetic Active Ingredients and Fragrances 5.0

(Preservative: paraoxybenzoic acid ester,

Cosmetic active ingredient: arbutin,

Fragrance: Combination Spices)

[Test Example]

1.stability (including arbutin titers)

Each of the cosmetics prepared in the compositions of Examples 1 to 3 and Comparative Examples 1 to 2 after separation at a temperature of 50 ℃, 40 ℃, 25 ℃, 5 ℃ over time or the off-flavor, arbutin content and state of change Observation and evaluation were made by visual and liquid chromatography methods.

At this time, observation and analysis were observed for 1 month at 50 ° C, 40 ° C, 25 ° C, and 5 ° C for 3 months, respectively, and the results are as shown in the following [Table 4].

2. Feeling, Moisturizing, Persistence

Among the cosmetics prepared according to Examples 1 to 3, the first best screening was carried out for 5 women in their mid 30s (Example 3), followed by 4 with the cosmetics prepared according to Comparative Examples 1 and 2. Daytime continuous use. At this time, the test subjects were 30 unspecified women in their mid 30s, and the blind test was shown in Table 4 below.

division Example Comparative example One 2 3 One 2 Stability ◎ △ ◎ ◎ O Feeling O △ ◎ X ◎ Moisturizing ◎ ◎ ◎ ◎ O Persistence ◎ ◎ ◎ ◎ △

(◎: very good, O: excellent, △: normal (good), X: bad)

As confirmed in [Table 4], the cosmetics (Comparative Example 1) of the W / O formulations were found to be very moisturizing and long-lasting, but most women preferred due to the disadvantages of heavy and heavy use. Did not do it.

On the other hand, in the case of cosmetics (Comparative Example 2) of the O / W formulation, it is good to be used lightly and gently when used, but complained of the inconvenience of applying frequently apart from the aspect of moisturizing and sustainability.

However, in the case of the cosmetic composition consisting of a W / O / W multi-liposome structure containing the arbutin (whitening cosmetic active ingredient) according to the present invention (Example 3), it was satisfied in all aspects such as usability, moisture retention, persistence, effects It was evaluated that the product overcomes the disadvantages of the cosmetics of the two formulations of Comparative Examples 1 and 2 and utilizes only the advantages of each.

As described above, by combining the whitening cosmetic composition W / O formulation containing the stabilized arbutin and the formulation in the form of gel emulsion in the aqueous / oil phase / aqueous multiple liposomes according to the present invention, it is composed of a phospholipid bilayer. By formulating particle emulsion of multi-emulsion similar to skin cell membrane, structurally skin-friendly formulation was established. Especially, when applied, skin irritation is not only reduced but also excellent in feeling, and it exists in internal layer by large-scale lamellar liquid crystal structure of several layers. It is an invention that produced a remarkable effect of inhibiting the release of water-soluble whitening components such as water and arbutin to increase the persistence of moisturizing and use effects.

Claims (4)

A whitening cosmetic composition containing arbutin as a stabilized whitening active ingredient, wherein a whitening effective ingredient arbutin is formed in a W / O emulsion, and the micelle is dispersed in another aqueous phase. A whitening cosmetic composition containing arbutin stabilized in / O / W multiple liposomes. The composition of claim 1, wherein the composition comprises 0.1 to 6.0 wt% of arbutin, 0.3 to 1.0 wt% of hydrogenated castor oil, 0.5 to 1.0 wt% of polyglyceryl isostearate, 2.0 to 4.0 wt% of mineral oil, and 0.01 to zinc sulfate. 0.1 wt%, stearic acid 0.3-1.0 wt%, cetanol 1.0-4.0 wt%, glyceryl trioctanoate 1.0-4.0 wt%, sucrose cocoate 1.0-5.0 wt%, sorbitan sesquioleate 0.5-2.0 % By weight, 0.2-2.0% by weight of silicone oil, 3.0-8.0% by weight of glycerin, 0.1-2.0% by weight of sodium glutamate combined with hydrogenated fatty acid, 0.01-0.1% by weight of EDTA, polyglyceryl methacrylate 1.0 Stabilized in W / O / W multiple liposomes, characterized by containing -5.0% by weight, 0.1-5.0% by weight thickener, 0.1-5.0% by weight neutralizer, 0.2-1.0% by weight preservative, and 48.7-88.38% by weight purified water. Whitening Contained Arbutin Charge composition. A first step of firstly emulsifying the purified water, the electrolytic material, and the arbutin, which is a whitening active ingredient, with an ester nonionic surfactant, polyglyceryl isostearate, and a nonpolar oil to obtain a W / O emulsion; The second step of constituting the oil phase by mixing the W / O emulsion obtained in the first step with fatty acid, cetanol, glyceryl trioctanoate, sucrose cocoate-based surfactant, sorbitan sesquioleate and silicone oil ; A third step of forming an aqueous phase by mixing purified water, glycerin, sodium glutamate combined with hydrogenated fatty acid, EDTA, and polyglyceryl methacrylate in a separate dissolution tank; A fourth step of mixing and secondly emulsifying the oil phase part and the water phase part prepared above using a homo mixer, and then cooling them to about 30 ° C. to 35 ° C .; Adding a thickener and a neutralizing agent to the mixture obtained in the fourth step and dispersing using a homo mixer, and then cooling and defoaming to room temperature; and W / O / W multiplexing comprising a configuration including a A method for producing a whitening cosmetic composition containing arbutin stabilized in liposomes. The method according to claim 3, wherein various fragrances, preservatives and other cosmetic active ingredients (Broussonetia Extract, Ethyl Axcorbyl Ether), oil-soluble licorice extracts as needed between the fourth and fifth stages. (Oil Soluble Licovice Extract)) A method for producing a whitening cosmetic composition containing arbutin stabilized in W / O / W multiple liposomes comprising the additional step of adding and mixing at least one or more.