WO2023057783A1

WO2023057783A1 - Cosmetic composition

Info

Publication number: WO2023057783A1
Application number: PCT/IB2021/000720
Authority: WO
Inventors: Kyosuke Nakamura; Koichi Hata
Original assignee: LVMH Recherche GIE
Current assignee: LVMH Recherche GIE
Priority date: 2021-10-08
Filing date: 2021-10-08
Publication date: 2023-04-13
Anticipated expiration: 2024-04-08

Abstract

A cosmetic composition comprising (a) a metabisulfite, (b) an aldehyde compound, (c) at least one selected from the group consisting of amino acids and amino acid derivatives, and (d) water.

Description

COSMETIC COMPOSITION

Technical Field

[0001] The present invention relates to a cosmetic composition.

Background Art

[0002] Lip cosmetics such as lipsticks and lip creams must have excellent properties in terms of not only usability but also odor, taste and appearance. In order to achieve such properties, and particularly odor and taste, aldehyde compounds with pleasant flavor such as vanillin are often formulated in the cosmetics.

[0003] Anionic surfactants derived from amino acids are useful for oil- in-water type emulsification, while amino acids themselves also provide a barrier function for skin, and therefore amino acid-derived components are widely used in formulation of cosmetics.

Technical Problem

[0004] However, the copresence of aldehyde compounds and amino acid-derived components in cosmetics can result in serious problems such as brown discoloration of the cosmetic appearance, as well as off- odor and bitter taste. While cosmetics further comprising plant-derived extracts with antioxidant effects, for example, have been proposed to overcome this problem (see Japanese Unexamined Patent Publication No. 2002-293736, for example), they require large amounts of plant- derived extracts, and most plant-derived extracts also have characteristic odors and brown appearance, such that it has been extremely difficult to produce cosmetics with all of the desired properties including appearance, odor and taste. [0005] It is an object of the invention to provide a cosmetic composition simultaneously comprising an aldehyde compound and an amino acid- derived component, while also exhibiting excellent properties of appearance, odor and taste.

Solution to Problem and Summary of Invention

[0006] The present invention provides a cosmetic composition comprising (a) a metabisulfite, (b) an aldehyde compound, (c) at least one selected from the group consisting of amino acids and amino acid derivatives and (d) water.

[0007] As used herein, "(a) metabisulfite" may also be referred to hereunder simply as "component (a)", and the other components may be referred to in a similar manner.

The aldehyde compound in the cosmetic composition of the invention may be an aromatic aldehyde. This will allow more excellent odor and taste to be exhibited.

The amino acid derivative in the cosmetic composition of the invention may be one or more selected from the group consisting of N- acylglutamates, N-acylalkylalanine salts, N-acylglycine salts, N- acylsarcosine salts and N-acylaspartates. By using these surfactant components as amino acid derivatives it is possible to produce a cosmetic composition in a satisfactory emulsified state, whether it is an oil-in-water type or water-in-oil type.

[0008] The cosmetic composition of the invention may also comprise (e) a liquid oil agent, (f) a coloring material or (g) a polyol. In a particular embodiment, the cosmetic composition of the invention is a lip cosmetic. [0009] The present invention also provides a cosmetic process for caring and/or making-up skin or lips, preferably lips, comprising the application onto skin or lips, of the cosmetic composition of the invention.

Advantageous Effects of Invention

[0010] According to the invention it is possible to provide a cosmetic composition simultaneously comprising an aldehyde compound and an amino acid-derived component, while also exhibiting excellent properties of appearance, odor and taste.

Detailed description of the invention

[0011] Preferred embodiments of the invention will now be described, with the understanding that these embodiments are in no way limitative on the invention.

Metabisulfite

[0012] The cosmetic composition of the invention comprises (a) a metabisulfite (also referred to as a “pyrosulfite”).

[0013] Examples of metabisulfites include alkali metal salts of metabisulfiirous acid, such as sodium metabisulfite (Na2S20s; also referred to as “sodium pyrosulfite” in the IUPAC name) and potassium metabisulfite (K2S2O5; also referred to as “potassium pyrosulfite” in the IUPAC name). Sodium metabisulfite is preferred among these for more excellent appearance, odor and taste. A single metabisulfite may be used alone, or two or more may be used in combination.

In a particular embodiment, the composition of the invention comprises sodium metabisulfite.

[0014] The content of component (a) may be 0.0001 to 0.5 mass%, 0.0005 to 0.4 mass%, 0.001 to 0.3 mass%, 0.001 to 0.2 mass% or 0.005 to 0.1 mass%, based on the total mass of the composition. In a particular embodiment, the composition comprises component (a) in a content ranging from 0.01 to 0.1 mass% based on the total mass of the composition.

Aldehyde compound

[0015] The cosmetic composition of the invention also comprises (b) an aldehyde compound.

[0016] As used herein, "aldehyde compound" means a compound having one or more formyl groups (-CHO) in the molecule. Examples of aldehyde compounds include aromatic aldehydes such as vanillin, ethylvanillin, -tolualdehyde and benzaldehyde; and aliphatic aldehydes such as citral, hexylcinnamaldehyde, cuminaldehyde, z‘ra«.s-2-octenal, decanal, cinnamaldehyde, citronellal, hydroxyisohexyl-3 -cyclohexene carboxaldehyde and citronellyl oxy acetaldehyde. Aromatic aldehydes are preferred and vanillin and ethylvanillin are more preferred among these, for more excellent odor and taste. A single type of aldehyde compound may be used, or two or more different types may be used in combination.

In a particular embodiment, the composition of the invention comprises an aldehyde compound selected in the group consisting of aromatic aldehydes, preferably vanillin, ethylvanillin, and mixtures thereof.

[0017] The content of component (b) may be 0.001 to 5 mass%, 0.005 to 3 mass%, 0.01 to 3 mass%, 0.01 to 2 mass% or 0.01 to 1 mass%, based on the total mass of the composition. In a particular embodiment, the composition comprises component (b) in a content ranging from 0.05 to 0.5 mass% based on the total mass of the composition. Amino acids and amino acids derivative

[0018] The cosmetic composition of the invention also comprises one or more selected from the group consisting of (c) amino acids and amino acid derivatives.

[0019] Examples of amino acids include glycine, alanine, valine, isoleucine, serine, threonine, aspartic acid, glutamic acid, acetylglutamic acid, asparagine, glutamine, lysine, hydroxylysine, arginine, cystine, cysteine, acetylcysteine, methionine, phenylalanine, tyrosine, proline, hydroxyproline and trimethylglycine. Taurine (aminoethylsulfonic acid) is not included among "amino acids" for the purpose of the present specification.

[0020] As used herein, "amino acid derivative" means a compound having a portion of the structure modified by introduction of a functional group into the amino acid. The molecular weight of the amino acid derivative is not particularly restricted, and may be 1000 or lower, for example. In a particular embodiment, the amino acid derivative is an anionic surfactant. Examples of amino acid derivatives include N- acylglutamates such as sodium cocoyl glutamate, potassium cocoyl glutamate, TEA-cocoyl glutamate, sodium lauroyl glutamate, potassium lauroyl glutamate, sodium myristoyl glutamate, sodium stearoyl glutamate, disodium stearoyl glutamate and sodium dilauramidoglutamide lysine; N-acylalkylalanine salts such as sodium cocoyl methyl beta-alanine, sodium lauroyl methylaminopropionate, TEA-lauroyl methylaminopropionate, TEA-cocoyl alaninate and sodium myristoyl methyl Beta-alanine; N-acylglycine salts such as sodium cocoyl glycinate, potassium cocoyl glycinate, TEA-cocoyl glycinate; N-acylsarcosine salts such as sodium cocoyl sarcosinate, potassium cocoyl sarcosinate, TEA-cocoyl sarcosinate, sodium lauroyl sarcosinate, potassium lauroyl sarcosinate, TEA-lauroyl sarcosinate and sodium myristoyl sarcosinate; and N-acylaspartates such as sodium sodium lauroyl aspartate and TEA-lauroyl/myristoyl aspartate. Among these, N-acylglutamate is preferred, and sodium myristoyl glutamate, sodium stearoyl glutamate or sodium dilauramidoglutamide lysine is more preferred, for a more excellent emulsified state.

So, in a particular embodiment, the composition of the invention comprises one or more N-acylglutamate, preferably selected in the group consisting of sodium myristoyl glutamate, sodium stearoyl glutamate, sodium dilauramidoglutamide lysine, and mixtures thereof.

[0021] The content of component (c) may be 0.001 to 10 mass%, 0.01 to 5 mass% or 0.01 to 3 mass%, based on the total mass of the composition. When component (c) is an amino acid, the content may be 0.001 to 5 mass%, 0.005 to 3 mass%, 0.005 to 2 mass%, 0.01 to 2 mass% or 0.01 to 1 mass%, based on the total mass of the composition. When component (c) is an amino acid derivative, the content may be 0.1 to 10 mass%, 0.1 to 8 mass%, 0.5 to 5 mass%, 0.8 to 4 mass% or 1 to 3 mass% based on the total mass of the composition, or the content may be 0.1 to 8 mass%, 0.1 to 6 mass%, 0.1 to 4 mass%, 0.2 to 3 mass% or 0.3 to 2.5 mass% based on the total mass of the composition.

Water

[0022] The cosmetic composition of the invention also comprises (d) water. [0023] The water used may be distilled water, purified water, hot spring water, deep water, or plant-derived steam distilled water such as lavender water, rose water or orange flower water.

The content of component (d) may be 1 to 99 mass%, 10 to 90 mass% or 15 to 80 mass%, based on the total mass of the composition.

[0024] The composition of the invention may also comprise additional ingredients, in particular selected in the group consisting of liquid oil agent, coloring material, powder component, thickening agent, polyol, and mixtures thereof.

Liquid oil agent

[0025] In a particular embodiment, the cosmetic composition of this embodiment also comprises (e) a liquid oil agent. As used herein, "liquid oil agent" refers to an oil agent that is liquid at ordinary temperature (25°C) and ordinary pressure (1 atm). The melting point of the liquid oil agent is preferably lower than 25°C at 1 atm, as measured according to well-known methods, in particular to "Quasi Drug Raw Material Standards, Method 3".

[0026] Examples of liquid oil agents include hydrocarbon oils such as squalane, vegetable squalane, liquid paraffin, light liquid isoparaffin, straight-chain alkanes, isododecane and isohexadecane; ester oils such as caprylic/capric triglyceride, phytosteryl/octyldodecyl lauroyl glutamate, polyglyceryl-2 diisostearate, polyglyceryl-2 triisostearate, ethylhexyl palmitate, cetyl ethylhexanoate, polyglyceryl-6 octacaprylate, phytosteryl/octyldodecyl lauroyl glutamate, octyldodecyl stearoyl stearate, diisostearyl malate, tridecyl trimellitate, dicaprylyl carbonate, dipentaerythrityl pentaisostearate, neopentyl glycol dicaprate, isotridecyl isononanoate, trimethylolpropane triisostearate, octyldodecyl stearoyl stearate, isostearyl isostearate, neopentyl glycol diethylhexanoate and (polyglyceryl-2 isostearate/dimer dilinoleate) copolymer; and silicone oils such as dimethicone, methyltrimethicone, diphenyldimethicone and phenyltrimethicone. Preferred among these are squalane, caprylic/capric triglyceride and phenyltrimethicone. Component (e) may be a single one used alone, or two or more may be used in combination.

[0027] The content of component (e) may be 10 to 95 mass%, 10 to 90 mass%, 15 to 90 mass%, 15 to 85 mass%, 20 to 90 mass% or 20 to 85 mass%, based on the total mass of the composition.

In a particular embodiment, the composition of the invention comprises a liquid oil agent selected in the group consisting of squalane, caprylic/capric triglyceride, phenyltrimethicone, and mixtures thereof. Coloring material

[0028] The cosmetic composition of this embodiment may also comprise (f) a coloring material. The term "coloring material", as used herein, means a powder component that can impart a color shade or gloss to skin or lips. If the cosmetic composition comprises component (f) it will be able to impart an optical makeup effect (coloring effect or pearlescent effect) to skin or lips.

[0029] The coloring material may be either water-soluble or oil-soluble. Examples of coloring materials include pigments such as titanium dioxide, iron oxides, zirconium oxide, ferric ammonium ferrocyanide, ferric ferrocyanide, ultramarines, chromium oxide greens, chromium hydroxide green, carmine, carbon black and organic pigments (for example, FD&C Red No. 2, FD&C Red No. 3, FD&C Red No. 4, D&C Red No. 6, D&C Red No. 7, D&C Red No. 8, D&C Red No. 9, D&C Red No. 17, D&C Red No. 21, D&C Red No. 22, D&C Red No. 27, D&C Red No. 28, D&C Red No. 30, D&C Red No. 31, D&C Red No. 33, D&C Red No. 34, D&C Red No. 36, FD&C Blue No. 1, FD&C Blue No. 2, D&C Blue No. 4, D&C Blue No. 6, D&C Brown No. 1, FD&C Green No. 3, D&C Green No. 5, D&C Green No. 6, D&C Green No. 8, D&C Orange No. 4, D&C Orange No. 5, D&C Orange No. 10, D&C Orange No. 11, D&C Violet No. 2, FD&C Yellow No. 5, FD&C Yellow No. 6, D&C Yellow No. 7, D&C Yellow No. 8, D&C Yellow No. 10 and D&C Yellow No. 11, or their lake-processed forms); dyes such as organic dyes (for example, FD&C Red No. 2, FD&C Red No. 3, FD&C Red No. 4, D&C Red No. 17, D&C Red No. 21 , D&C Red No. 22, D&C Red No. 27, D&C Red No. 28, D&C Red No. 30, D&C Red No. 33, FD&C Blue No. 1, FD&C Blue No. 2, D&C Blue No. 4, D&C Blue No. 6, D&C Brown No. 1, FD&C Green No. 3, D&C Green No. 5. D&C Green No. 6, D&C Green No. 8, D&C Orange No. 4, D&C Orange No. 5, D&C Orange No. 10, D&C Orange No. 11, D&C Violet No. 2, FD&C Yellow No. 5, FD&C Yellow No. 6, D&C Yellow No. 7, D&C Yellow No. 8, D&C Yellow No. 10 and D&C Yellow No. 11); and pearlescent inorganic agents such as titanium dioxide-coated mica, titanium dioxidecoated synthetic mica, black iron oxide-coated mica-titanium, yellow iron oxide-coated mica-titanium, red iron oxide-coated mica-titanium, bismuth oxychloride and calcium aluminum borosilicate. These coloring materials may have naturally hydrophilic or hydrophobic surfaces, or they may have all or portions of the surfaces hydrophilicized or hydrophobicized. The hydrophilicizing treatment may be carried out by a common method using a hydrophilicizing agent, which may be a water-soluble polymer such as polyacrylic acid; an inorganic compound such as silica or alumina; or a surfactant. The hydrophobicizing treatment may be carried out by a common method using at least one kind of hydrophobicizing agents selected from the group consisting of silicone compounds, silane compounds, amino acid derivatives, sugar derivatives, organic titanates, phospholipids, metal soaps, fatty acids, oils, and organic polymers. Component (f) may be a single one used alone, or two or more may be used in combination.

[0030] The content of component (f) may be 0.0001 to 30 mass%, 0.0001 to 20 mass%, 0.001 to 20 mass%, 0.01 to 20 mass% or 0.01 to 15 mass%, based on the total mass.

Powder component other than coloring material

[0031] In a particular embodiment, the cosmetic composition of the invention also comprises a powder component other than component (f), in particular a filler, that may be a mineral filler or an organic filler.

[0032] Examples of powder components (fillers) other than component (f) include synthetic mica, mica, talc, sericite, kaolin, plate-shaped zinc oxide, plate-shaped titanium oxide, plate-shaped cerium oxide, barium sulfate, plate-shaped boron nitride, plate-shaped silica, lauroyl lysine, hydroxyapatite, bentonite, montmorillonite, hectorite, nylon- 12, nylon- 6/12, polymethyl methacrylate, methyl methacrylate crosspolymer, ethylene/acrylic acid copolymer, (dimethicone/vinyldimethicone) crosspolymer, (vinyldimethicone/methicone silsesquioxane) crosspolymer, polymethylsilsesquioxane, (diphenyldimethicone/vinyldiphenyldimethicone/silsesquioxane) crosspolymer, (dimethiconol/methylsilanol/silica) crosspolymer, polyethylene, (HDI/trimethylolhexyllactone) crosspolymer, spherical cellulose, spherical silica, calcium silicate, magnesium silicate, spherical starch, magnesium oxide-aluminum oxide, calcium sulfate, barium sulfate, magnesium sulfate, calcium carbonate and magnesium carbonate. A powder component (filler) other than component (f) may be a single one used alone, or two or more used in combination.

Polyol

[0033] In a particular embodiment, the cosmetic composition of the invention also comprises (g) a polyol.

[0034] Examples of polyols include ethylene glycol, propylene glycol, 1,3 -propanediol, butylene glycol, pentylene glycol (1,2-pentanediol), 1 ,2-hexanediol, caprylyl glycol (1,2-octanediol), dipropylene glycol, polyethylene glycol, glycerin, diglycerin, polyglycerin, ethylhexylglycerin, sorbitol, xylitol and mannitol. Component (g) may be a single one used alone, or two or more used in combination.

[0035] The content of component (g) is preferably 1 to 25 mass%, and may be 1 to 20 mass%, 3 to 25 mass%, 3 to 20 mass%, 4 to 20 mass% or 5 to 20 mass%, based on the total mass of the composition.

Thickening component

[0036] In a particular embodiment, the cosmetic composition of the invention further comprises a thickening component other than a polyol, for example, an acryloylalkyltaurine-based polymer such as (hydroxyethyl acrylate/acryloyldimethyltaurine sodium) copolymer, (acryloyldimethyltaurine ammonium/VP) copolymer or hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer; a PEG-based polymer such as (PEG-240/decyltetradeceth-20/HDI) copolymer, (PEG- 150/decyl alcohol/saturated bismethylene diphenylisocyanate (SMDI)) copolymer or (PEG-150/stearyl alcohol/SMDI) copolymer; or hydroxypropyl methyl cellulose or (Acrylates/Beheneth-25 Methacrylate) copolymer. The thickening component may be a single one used alone, or two or more used in combination.

Pasty oil agent

[0037] In a particular embodiment, the cosmetic composition of the invention further comprises a pasty oil agent, for example, plant oil pastes (vegetable oils), shea butter Butyrospermum parkii\ mango seed butter (Mangifera indica), avocado butter (Perseagratissimdy hydrogenated castor oil dimer dilinoleate, jojoba seed oil and jojoba ester. The pasty oil agent may be a single one used alone, or two or more used in combination.

Other optional ingredients

[0038] The cosmetic composition of this embodiment may also contain, in addition to these components, nonionic surfactants, pH regulators, chelating agents, antioxidants, antifading agents, antiseptic agents, active ingredients, stabilizers and perfumes, added as appropriate in order to impart various effects.

[0039] In a particular embodiment, the composition of the invention comprises:

(a) a sodium metabisulfite,

(b) an aromatic aldehyde, preferably selected from vanillin and ethylvanillin, (c) N-acylglutamates, preferably selected in the group consisting of sodium myristoyl glutamate, sodium stearoyl glutamate, sodium dilauramidoglutamide lysine, and mixtures thereof, and

(d) water.

The composition may also comprise one or more additional compounds selected in the group consisting of an oil agent, a coloring material, a powder component (filler), a polyol, a thickening component, and mixtures thereof.

Formulations and preparation process

In a particular embodiment, the composition of the invention is a waterbased cosmetic or an emulsion cosmetic, in particular a water-in-oil emulsion or an oil-in-water emulsion.

[0040] When the cosmetic composition of the invention is a waterbased cosmetic composition, the cosmetic composition can be produced, for example, by mixing component (a), component (b), component (c), component (d) and, as necessary, component (g) and other aqueous components, and stirring the mixture at a temperature of preferably 70°C or higher.

[0041] According to another embodiment, when the cosmetic composition of the invention is an oil-in-water type cosmetic, the cosmetic composition can be produced by the following steps, for example:

(1) Component (c), component (d) and, as necessary, component (g) and other aqueous components, are mixed and stirred at a temperature of preferably 70°C or higher to obtain mixture A; (2) Component (e) is mixed with aqueous mixture A as necessary, and emulsified preferably at high pressure (>200 MPa, for example) to obtain mixture B; and

(3) Component (a), component (b) and, as necessary, component (f) and other oily components are added to and stirred with mixture B.

[0042] According to another embodiment, when the cosmetic composition of the invention is a water-in-oil type cosmetic composition, the cosmetic composition can be produced by the following steps, for example:

(1) Component (e) and, as necessary, component (f) and other oily components, are mixed and stirred at a temperature of preferably 70°C or higher to obtain mixture C;

(2) Component (a), component (b), component (c) and, as necessary, component (g) and other aqueous components, are mixed and stirred at a temperature of preferably 70°C or higher to obtain an emulsified mixture D; and

(3) Mixture D is added to mixture C, and stirred.

[0043] The cosmetic composition of the invention can be suitably used as skin or lip cosmetic, in particular a lip cosmetic because it has excellent properties including appearance, odor and taste. So in a particular and preferred embodiment, the cosmetic composition of the invention is a lipstick, a lip gloss or a lip cream, for example.

[0044] The present invention also provides a cosmetic process for caring and/or making-up skin or lips, preferably lips, comprising the application onto skin or lips, of the cosmetic composition of the invention.

Examples The present invention will now be explained in specific detail through the following examples, with the understanding that the invention is not limited by the examples.

[0045] [Test Example 1: Aqueous cosmetics]

(1) Preparation of cosmetics

Each of the components of the composition in Table 1 were mixed and stirred at 80°C to prepare different cosmetics. The units for the contents of each of the materials in Table 1 are given in mass% by mass of the composition.

(2) Stability evaluation

Each prepared cosmetic was filled into a glass vessel and sealed with a cap, and then stored for 1 month at 50°C. For appearance, cosmetics in which no color change was observed or only slight color change was observed were evaluated as "a", and cosmetics in which color change such as brown coloration or other coloration was clearly observed were evaluated as "b". For odor and taste, 10 evaluation panelists, who were cosmetic experts (ages 25 to 55) compared standard samples (each of the prepared cosmetics housed in a glass vessel, sealed with a cap, and stored for 1 month at 4°C), and evaluated them on the following 6-level scale, from A to F.

Scale

A: All evaluators indicated no discernible change in odor or taste. B: 1 or 2 evaluators indicated a slight change in odor or taste.

C: 1 or 2 evaluators indicated a discernible change to unpleasant odor or taste. D: 1 or 2 evaluators indicated a discernible notable change to unpleasant odor or taste.

E: 3 to 5 evaluators indicated a discernible notable change to unpleasant odor or taste.

F: 6 to 10 evaluators indicated a discernible notable change to unpleasant odor or taste.

Evaluations of A or B have acceptable properties of appearance, odor and taste.

The results are shown in Table 1.

[0046] [Table 1]

*1 : GLDA-4Na 40% water solution (supplied by SHOWA DENKO)

*2: TINOGARD TT (supplied by BASF)

*3: TINOGARD Q (supplied by BASF)

*4: AMISOFT HS-11 PF (supplied by Ajinomoto Co., Inc.)

*5: PELICER L-30 (supplied by Asahi Kasel Corp.)

[0047] These results demonstrate that the use of metabisulfite (a), in comparison to other antioxydants, in an aqueous composition comprising an aldehyde compound (b) and an amino-acid derivative (c), permits to obtain a composition exhibiting excellent properties of appearance, odor and taste.

[0048] [Test Example 2: Oil-in-water cosmetics]

(1) Preparation of cosmetics

Cosmetics were prepared by the following method, based on the compositions shown in Table 2. The units for the contents of each of the materials in Table 2 are given in mass%.

After mixing component (c), component (d), component (g) and other aqueous components, and using a homogenizer for stirring at 70°C, component (e) was stirred in at 70° C and the resulting mixture was loaded for high pressure emulsification at 200 MPa to obtain an emulsion. The remaining components were added to the obtained emulsion and stirred to prepare cosmetics.

(2) Stability evaluation

Each prepared cosmetic was filled into a glass vessel and sealed with a cap, and then stored for 1 month at 50°C. For appearance, cosmetics in which no color change was observed or only slight color change was observed were evaluated as "a", and cosmetics in which color change such as brown coloration or other coloration was clearly observed were evaluated as "b". For the emulsified state, cosmetics in which no separation was observed or only slight separation was observed were evaluated as "a", and those wherein a clear change such as separation was observed were evaluated as "b". Odor and taste were evaluated by the same methods and on the same scale as Test Example 1. The results are shown in Table 2.

(3) Organoleptic evaluation

The watery fresh texture and nourishing effect of each prepared cosmetic when coated were evaluated by a single-use test on the lips by 10 evaluation panelists (ages 25 to 55). Specifically, the 10 cosmetic experts as evaluation panelists used an applicator to apply each cosmetic onto the lips, confirming, for watery fresh texture, whether or not a supple sensation was felt on the lips when applied, and for nourishing effect, whether or not a moisturizing effect was felt on the lips after application, and each was evaluated based on the following 6-level scale, from A to F.

Scale

A: Extremely satisfactory

B: Very satisfactory

C: Slightly poor

D: Poor

E: Very poor

F : Extremely poor

Evaluations of A or B have acceptable properties of appearance, odor and taste.

The results are shown in Table 2.

[0049] [Table 2]

*1: TINOGARD TT (supplied by BASF)

*2: AMISOFT HS-11PF (supplied by Ajinomoto Co, Inc)

*3: PELICER L-30 (supplied by Asahi Kasei Corp)

*4: TMF-15 (supplied byShin-Etsu Chemical Co, Ltd)

*5: SIMULGEL NS (supplied by Seppic Co, Ltd)

*6: ADEKANOL GT-700 (supplied by Adeka Corp)

[0050] The compositions of Examples have good taste, odor, appearance and stability. In addition, the compositions of Examples in which a coloring material is blended have a color effect in addition to good taste, odor, appearance and stability.

So, these results demonstrate that the combination of metabisulfite, aldehyde compound and amino-acid derivative in an oil-in-water cosmetic permits to keep excellent properties of appearance, odor and taste, and also a color effect in presence of coloring materials.

[0051] [Test Example 3: Water-in-oil cosmetic]

(1) Preparation of cosmetics

Cosmetics were prepared by the following method, based on the compositions shown in Table 3. The units for the contents of each of the materials in Table 3 are given in mass%.

After mixing component (e), component (f) and, as necessary, tocopherol or dibutylhydroxytoluene and stirring the mixture at 70°C, the remaining components were stirred at 70°C and the obtained mixture was loaded, and stirred to prepare each cosmetic.

(2) Stability evaluation

Each prepared cosmetic was filled into a glass vessel and sealed with a cap, and then stored for 1 month at 50°C. For appearance, cosmetics in which no color change was observed or only slight color change was observed were evaluated as "a", and cosmetics in which color change such as brown coloration or other coloration was clearly observed were evaluated as "b". For the emulsified state, cosmetics in which no separation was observed or only slight separation was observed were evaluated as "a", and those wherein a clear change such as separation was observed were evaluated as "b". Odor and taste were evaluated by the same methods and on the same scale as Test Example 1. The results are shown in Table 3.

(3) Organoleptic evaluation

The moisturizing texture and smooth texture of each prepared cosmetic when coated were evaluated by a single-use test on the lips by 10 evaluation panelists who were cosmetic experts (ages 25 to 55). Specifically, the 10 cosmetic experts as evaluation panelists used an applicator to apply each cosmetic onto the lips, confirming, for moisturizing texture, whether or not the cosmetic adhered over the entirety of the lips and provided a moisturized feel when applied, and for smooth texture, whether or not the cosmetic spread smoothly without producing stickiness on the lips when applied, and each was evaluated based on the following 6-level scale.

Scale

A: Extremely satisfactory

B: Very satisfactory

C: Slightly poor

D: Poor

E: Very poor

F : Extremely poor

Evaluations of A or B have good properties of appearance, odor and taste The results are shown in Table 3.

*1 : AMISOFT HS-11PF (supplied by Ajinomoto Co., Inc.)

*2: AMISOFT MS-11 (supplied by Ajinomoto Co., Inc.)

*3: ELDEW® PS-203 (supplied by Ajinomoto Co., Inc.)

[0053] The compositions of Examples have good taste, odor, appearance and stability. In addition, the compositions of Examples in which a coloring material is blended have a color effect in addition to good taste, odor, appearance and stability.

So, these results demonstrate that the combination of metabisulfite, aldehyde compound and amino-acid derivative in an water-in-oil cosmetic permits to keep excellent properties of appearance, odor and taste, and also a color effect in presence of coloring materials.

Claims

1. A cosmetic composition comprising

(a) a metabisulfite,

(b) an aldehyde compound,

(c) at least one selected from the group consisting of amino acids and amino acid derivatives and

(d) water.

2. The cosmetic composition according to claim 1, wherein the aldehyde compound is an aromatic aldehyde.

3. The cosmetic composition according to claim 1 or 2, wherein the amino acid derivative is one or more selected from the group consisting of N-acylglutamates, N-acylalkylalanine salts, N-acylglycine salts, N- acylsarcosine salts and N-acylaspartates, preferably N-acylglutamates.

4. The cosmetic composition according to any one of claims 1 to 3, which further comprises (e) a liquid oil agent.

5. The cosmetic composition according to any one of claims 1 to 4, which further comprises (f) a coloring material.

6. The cosmetic composition according to any one of claims 1 to 5, which further comprises (g) a polyol.

7. The cosmetic composition according to anyone of claim 1 to 3, comprising:

(a) a sodium metabisulfite,

(b) an aromatic aldehyde, preferably selected from vanillin and ethylvanillin,

25 (c) a N-acylglutamate, preferably selected in the group consisting of sodium myristoyl glutamate, sodium stearoyl glutamate, sodium dilauramidoglutamide lysine, and mixtures thereof, and

(d) water.

8. The cosmetic composition according to any one of claims 1 to 7, which is water-based cosmetic or an emulsion cosmetic, in particular a water-in-oil emulsion or an oil-in-water emulsion.

9. The cosmetic composition according to any one of claims 1 to 8, which is a lip cosmetic.

10. A cosmetic process for caring and/or making-up skin or lips, preferably lips, comprising the application onto skin or lips, of the cosmetic composition of any one of claims 1 to 9.