JP2013166709A - Aqueous cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an aqueous cosmetic containing a ceramide excellent in moistening properties, without stickiness when used, having excellent moist feeling, and excellent in temporal stability.SOLUTION: An aqueous cosmetic contains (A) a compound selected from a ceramide and a ceramide analog; (B) an oily component; (C) a hydrophilic surfactant selected from a hydrolyzed collagen and a derivative thereof; and (D) a water-soluble amphipathic component.

Description

  The present invention relates to an aqueous cosmetic, and more particularly to an aqueous cosmetic excellent in moisture retention, transparency, and stability over time.

  In recent years, the number of people with dry skin has increased due to the effects of climate change, environmental deterioration in urban areas, changes in dietary habits, and mental stress. In addition, the employment rate of women is increasing, and the number of people working outside for a long time is increasing. Against this background, after applying cosmetics, the desire to use cosmetics that last for a long time is increasing.

Ceramide and its derivatives have attracted attention as ingredients with excellent moisturizing properties and are used in various cosmetics and skin preparations. Ceramide is oil-soluble and excellent in affinity with oil-based components, but it has been difficult to stably blend it in a water-based cosmetic with a refreshed use feeling.
Various improvements have been attempted when water-insoluble ingredients such as ceramides and oil-soluble ingredients such as ceramide and oily ingredients with excellent moisturizing properties are used in light-use water-based cosmetics.
For example, a transparent or translucent cosmetic containing a polyglycerin fatty acid ester and an acylated hydrolyzed protein salt together with a poorly water-soluble component has been proposed (see, for example, Patent Document 1).
In addition, an emulsified cosmetic containing lecithin, which is a surfactant excellent in moisture retention, and a water-soluble polyhydric alcohol excellent in moisture retention has been proposed (see, for example, Patent Document 2).

  As a method of stably retaining the oily component in the aqueous cosmetic, it is conceivable to improve the stability by increasing the amount of the component having surface active ability, but the content of the component having surface active ability is increased. There is a concern that the feeling of stickiness will worsen.

JP 2002-193724 A JP 200322661 A

In the prior art described above, it is difficult to stably retain the oil component in the aqueous cosmetic, and in particular, an aqueous cosmetic such as a highly transparent lotion, and a refreshing aqueous feel that has a high viscosity. When applied to gel cosmetics, there are problems such as separation of oily components over time and turbidity, and more instability at high ambient temperatures of 40 ° C. or higher such as summer outdoor air. For this reason, there has been a demand for an aqueous cosmetic material that maintains the refreshing feeling of the aqueous cosmetic material and the moist feeling of ceramide and is excellent in storage stability even when the temperature condition is severe for a long period of time.
An object of the present invention made in view of the above situation is an aqueous makeup containing ceramide having excellent moisturizing properties, having no stickiness at the time of use, good moisturizing feeling and good stability over time. Is to provide a fee.

In view of the above circumstances, as a result of intensive studies by the present inventors, a combined use of a hydrolyzed collagen derivative having a specific surfactant activity and a water-soluble amphiphilic component typified by polyalkylene glyceryl ether The present inventors have found that an aqueous cosmetic containing ceramide, having a transparent appearance and excellent storage stability can be obtained.
That is, the configuration of the present invention is as follows.
[1] (A) a compound selected from ceramide and a ceramide analog, (B) an oil component,
(C) A transparent aqueous cosmetic containing a hydrophilic surfactant selected from hydrolyzed collagen and derivatives thereof, and (D) a water-soluble amphiphilic component.
[2] The transparent aqueous cosmetic according to [1], further comprising (E) a thickener.
[3] The (C) hydrophilic surfactant is selected from the group consisting of hydrolyzed collagen derivatives selected from cocoyl hydrolyzed collagen, isostearoyl hydrolyzed collagen, and (dihydroxymethylsilylpropoxy) hydroxypropyl hydrolyzed collagen. The transparent aqueous cosmetic composition according to [1] or [2], which is one or more of the above.
[4] The water-soluble amphiphilic component (D) is a polyalkylene polyglyceryl ether selected from polypropylene glycol-9 diglyceryl, polypropylene glycol-14 diglyceryl and polyoxypropylene polyglyceryl ether. [1] to [3 ] The transparent water-based cosmetics described in any one of the above.

  According to the present invention, it is possible to obtain a transparent aqueous cosmetic composition having a refreshing feeling of use, excellent in moisture, and maintaining transparency even under severe environments such as high temperatures and excellent in storage stability. be able to. In the transparent aqueous cosmetic composition of the present invention, a highly moist oily component such as ceramide is stably dispersed as fine oil droplets in the aqueous medium. It becomes.

  According to the present invention, it is possible to provide a transparent aqueous cosmetic containing ceramide having excellent moisturizing properties, having no stickiness at the time of use, good moisturizing feeling, and good stability over time.

Hereinafter, the present invention will be described in detail.
The transparent aqueous cosmetic of the present invention (hereinafter sometimes simply referred to as “cosmetic” or “cosmetic of the present invention”) is a compound selected from (A) ceramide and a ceramide analog as a moisturizing component (hereinafter referred to as “the cosmetic”). (Referred to as ceramides as appropriate), (B) an oily component serving as a medium for dissolving ceramides, and (C) a hydrophilic surfactant selected from hydrolyzed collagen and its derivatives that contribute to the stabilization of the oily component And (D) a water-soluble amphiphilic component.
Hereinafter, each component will be described.

  In this specification, when referring to either or both of “acryl” and “methacryl”, it may be described as “(meth) acryl”, and when referring to either or both of “acrylate” and “methacrylate” It may be described as “(meth) acrylate”.

(A) Compound selected from ceramide and ceramide analog The compound selected from ceramide and ceramide analog used in the present invention can be used without particular limitation as long as it has a basic structure of ceramide. The ceramides may be natural ceramides or synthetic ceramides. Further, it may be a ceramide analogue such as pseudoceramide having a chemical structure and properties similar to those of natural ceramide.
Ceramides are a kind of sphingolipid, are present in large amounts in the keratin, and are deeply involved in the expression of skin protective functions and barrier functions. It is also known to be effective in protecting rough skin and preventing skin aging. When one or more ceramides are added to cosmetics, the skin is moisturized and moisturized. Lasts for a period.
Examples of ceramides that can be used in the present invention include ceramide 1, ceramide 2, ceramide 3, ceramide 4, ceramide 5, ceramide 6I, and ceramide 6II. Among the ceramides, natural ceramides may be usually extracted from animal leather, brain, eggs, blood cells, plant wheat, rice bran or the like or derivatives thereof. Moreover, as synthetic ceramide and pseudo-ceramide, for example, those disclosed in JP 2000-186030 A and JP 2000-186013 A may be used.
In the present specification, “ceramides” are used to include not only the above-mentioned natural ceramides, synthetic ceramides and pseudoceramides but also extracts or derivatives thereof.

As the ceramides, commercially available products may be used. For example, N-stearoylphytosphingodine (manufactured by Nikko Chemicals, “Ceramide III”), N-stearoyl sphinganine (manufactured by Croda Japan, “Ceramide II”). ”), Trihydroxypalmitamide hydroxypropyl myristyl ether (“ Ceramide HO3 ”manufactured by Croda Japan Co., Ltd.),“ Ceramide Presome ”manufactured by Nippon Seika Co., Ltd., and N-lauroyl-L-glutamic acid obtained by esterifying glutamic acid Di (phytosteryl, behenyl, 2-octyldodecyl) (“El Dew PS-304” manufactured by Ajinomoto Co., Inc.) and the like can be mentioned.
Among these, ceramides selected from ceramide 2 and ceramide 3 are preferable from the viewpoint of effects.

Only one kind of ceramides may be used in the aqueous cosmetic composition of the present invention, or two or more kinds thereof may be used in combination.
The content of ceramides is preferably about 0.0001% by mass to 0.5% by mass, and more preferably in the range of 0.0005% by mass to 0.3% by mass with respect to the total amount of the aqueous cosmetic of the present invention. Preferably, the range is 0.0005% by mass to 0.05% by mass. In addition, when using together 2 or more types of ceramides, the said compounding ratio means the compounding ratio of total content. Also in the following each component, content means the total amount of the said component, when multiple types of the said component are included.

(B) Oil component In order to disperse | distribute ceramides stably to aqueous cosmetics, and also to improve a moist feeling, the cosmetics of this invention contain an oil component.
By containing an oil component, the ceramides are dissolved in the oil component to form an oil phase. Although there is no restriction | limiting in particular as an oil-based component in this invention, It is preferable that it is a liquid oil-based component at normal temperature (25 degreeC). The oily component that can be used in the present invention is not particularly limited as long as it is a liquid at room temperature and can be used in cosmetics. Hydrocarbon oil, ester oil, vegetable oil, animal oil, mineral oil, silicone oil From the viewpoint of imparting touch to the skin and moisturizing properties, one or more selected from hydrocarbon oils, ester oils, and vegetable oils are preferable.
Examples of vegetable oils include avocado oil, camellia oil, macadamia nut oil, corn oil, olive oil, rapeseed oil, maize oil, persic oil, wheat germ oil, sasanqua oil, castor oil, linseed oil, safflower oil, cottonseed oil, eno oil , Soybean oil, peanut oil, tea seed oil, kaya oil, rice bran oil, snail oil, Japanese drill oil, jojoba oil, and germ oil.
Examples of animal oils include squalane, turtle oil, mink oil, and egg yolk oil.

  Examples of ester oils include glyceryl triisooctanoate, glyceryl triisopalmitate, octyl isopalmitate, isopropyl isostearate, isostearyl isostearate, isocetyl isostearate, hexyl isostearate, myristyl isostearate, isocetyl octanoate, isooctanoic acid Cetyl, isostearyl octoate, isodecyl isononanoate, octyldodecyl dimethyloctanoate, oleyl myristate, isostearyl erucate, isocetyl stearate, octyl stearate, isostearyl palmitate, isocetyl palmitate, octyl palmitate, isomyristate myristate Stearyl, isocetyl myristate, octyldodecyl myristate, decyl myristate, palmiti Isopropyl acid, isopropyl myristate, trimethylolpropane triisostearate, neopentyl glycol dicaprate, dioctyl sebacate, octyldodecyl 12-stearoyloxystearate, dioctyldecyl stearoylglutamate, dioctyl adipate, diisostearyl malate, octyl lactate Examples include dodecyl, isostearyl lactate, and octyl paradimethylaminobenzoate.

Hydrocarbon oils include liquid paraffin, isoparaffin, α-olefin oligomer, polybutene, 2-octyldodecanol, isostearyl alcohol, oleyl alcohol, jojoba alcohol, elaidyl alcohol, linoleyl alcohol, linolenyl alcohol, isostearin. Examples include acids, oleic acid, linoleic acid, linolenic acid, 2-octyldodecanoic acid and the like.
Examples of the silicone oil include dimethylpolysiloxanes such as decamethyltetrasiloxane, dodecamethylpentasiloxane, tetradecamethylhexasiloxane, and hexadecamethylheptasiloxane;
Cyclic polysiloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, tetradecamethylcycloheptasiloxane;
Examples include methylphenyl polysiloxane.

Among these, higher alcohols are preferable from the viewpoint of affinity with ceramide and moisturizing properties, and more specifically, isostearyl alcohol, oleyl alcohol, jojoba alcohol, and the like are preferable.
These can be used alone or in combination of two or more.

  The content of the oily component used in the present invention is preferably in the range of 0.001% by mass to 5.0% by mass, more preferably 0.005% by mass to 3.0%, with respect to all cosmetic ingredients. It is the range of mass%.

(C) Hydrophilic surfactant selected from hydrolyzed collagen and derivatives thereof The aqueous cosmetic composition of the present invention includes a hydrophilic surfactant selected from hydrolyzed collagen and derivatives thereof (hereinafter referred to as specific hydrophilicity as appropriate). (Referred to as a surfactant). The solubility of ceramides improves by containing a specific hydrophilic surfactant.
The specific hydrophilic surfactant is not particularly limited as long as it contains a hydrolyzed collagen structure in the molecule, and is selected from peptides obtained by hydrolyzing collagen and derivatives thereof. It is preferable that it originates in a thing.
As the raw material collagen, it is possible to use gelatin obtained from skin and bones of livestock such as cows and pigs, skins of fish, bones and scales, sponges, etc., hydrolyzed collagen obtained by hydrolyzing this, and the Hydrolyzed collagen derivatives obtained by chemically modifying hydrolyzed collagen such as acylation, silylation, and esterification are preferably used. The derivative is preferably in the form of a salt of hydrolyzed collagen.
More specifically, cocoyl hydrolyzed collagen salt, isostearoyl hydrolyzed collagen salt, undecylenoyl hydrolyzed collagen salt, (dihydroxymethylsilylpropoxy) hydroxypropyl hydrolyzed collagen salt, and the like include sodium salt, potassium Preferred examples include salts, aminomethyl propanol and aminomethyl propanediol. Of these, cocoyl hydrolyzed collagen potassium salt, isostearoyl hydrolyzed collagen aminomethylpropane diol, and the like are preferable from the viewpoint of excellent surface activity and contribution to the stability of ceramides. Isostearoyl hydrolyzed collagen aminomethylpropane Diols are more preferred.

  The specific hydrophilic surfactant is also available as a commercial product. For example, as a hydrolyzate of marine collagen and derivatives thereof, Promois EUCP (trade name, Seiwa Kasei Co., Ltd .: acylated product), Promois EU-118D (trade name, Seiwa Kasei Co., Ltd., isostearoyl hydrolyzed collagen aminomethylpropanediol, acylated product), Promois WU-32SIG (trade name, Seiwa Kasei Co., Ltd .: aminomethylpropanediol dihydroxymethylsilyl) Propoxy) hydroxypropyl hydrolyzed collagen, silylated product) and the like, and among them, Promois EU-118D is preferable.

Only 1 type may be used for a specific hydrophilic surfactant, and 2 or more types may be used together.
The content of the specific hydrophilic surfactant is preferably about 0.2% by mass to 10.0% by mass, particularly in the range of 0.2% by mass to 7.0% by mass with respect to the total amount of the cosmetic of the present invention. Is preferred.

(D) Water-soluble amphiphilic component By containing the water-soluble amphiphilic component (D) in the aqueous cosmetic composition of the present invention, the stability of the oil-based component containing ceramides in the system is improved.
The water-soluble amphiphilic component that can be used in the present invention is preferably a polyalkylene polyglyceryl ether, particularly polyoxypropylene-added polyglyceryl ether, and more specifically, polypropylene glycol-9 diglyceryl, polypropylene glycol-14 diglyceryl. And polyoxypropylene polyglyceryl ether. In component (D), the balance between lipophilicity and hydrophilicity can be controlled by controlling at least one of the number of moles of oxypropylene added and the number of glycerins added. Preference is given to polyoxypropylene polyglyceryl ethers having 4, 9, 14, 18 and 24 added moles. Moreover, it is preferable that the addition number of glyceryl ether is the range of 2-20.

  The water-soluble amphiphilic component is also available as a commercial product. For example, SC-P400 (trade name, Sakamoto Pharmaceutical Co., Ltd .; POP (4) polyglyceryl ether: molecular weight: 400, SC-P750 (trade name, Sakamoto Pharmaceutical Co., Ltd .; POP (9) polyglyceryl ether, molecular weight: 750), SC-P1000 (trade name, Sakamoto Pharmaceutical Co., Ltd .: POP (14) polyglyceryl ether, molecular weight: 1000), SC -P1200 (trade name, Sakamoto Yakuhin Kogyo Co., Ltd .: POP (18) polyglyceryl ether 1200), SC-P1600 (brand name, Sakamoto Yakuhin Kogyo Co., Ltd.): POP (24) polyglyceryl ether Weight average (Molecular weight: 1600) etc. The numbers in parentheses indicate the number of moles of POP added.

Only one type of water-soluble amphiphilic component may be used, or two or more types may be used in combination.
The content of the water-soluble amphiphilic component is preferably about 0.2% by mass to 4.0% by mass, and particularly 0.1% by mass to 5.0% by mass with respect to the total amount of the cosmetic of the present invention. Is preferred.

The water-in-oil emulsified cosmetic of the present invention contains water as a medium and other aqueous components in addition to the components (A) to (D).
Since the water contained in the cosmetic of the present invention preferably does not contain impurities, it is preferable to use ion-exchanged water or pure water. The water content is appropriately selected according to the preferred dosage form of the cosmetic of the present invention.

(E) Thickener When the aqueous cosmetic of the present invention is used as a transparent gel cosmetic or a massage cream, (F) a thickener may be further added.
As the thickener, any known thickener used in cosmetics can be used without particular limitation.
As the thickener, a water-soluble thickener is preferable. Specifically, for example, a plant polymer such as gum arabic, gum tragacanth, galactan, guar gum, carob gum, caraya gum, gellan gum, carrageenan;
Microbial polymers such as xanthan gum, dextran, succinoglucan, pullulan, sodium biohyaluronate;
Animal macromolecules such as collagen, casein, albumin, gelatin;
Starch-based polymers such as carboxymethyl starch and methylhydroxypropyl starch;
Cellulose polymers such as methylcellulose, ethylcellulose, methylhydroxypropylcellulose, hydroxyethylcellulose, sodium cellulose sulfate, hydroxypropylcellulose, sodium carboxymethylcellulose, crystalline cellulose;
Alginate polymers such as sodium alginate, propylene glycol alginate;
Vinyl polymers such as polyvinyl alcohol, polyvinyl acetate, polyvinyl methyl ether, polyvinyl pyrrolidone, vinyl pyrrolidone and vinyl acetate copolymer, carboxy vinyl polymer;
Acrylic polymers such as sodium polyacrylate, polyethyl acrylate, alkanolamine polyacrylate, alkyl methacrylate and dimethylaminoethyl methacrylate copolymer, poly-2-acrylamido-2-methylpropanesulfonic acid, polymethacryloyloxytrimethylammonium;
A polymer comprising 2-methacryloyloxyethyl phosphorylcholine as a monomer;
Etc.
Of these, carboxyvinyl polymer, carboxymethylcellulose, carrageenan, quince and the like are preferable from the viewpoint of the feeling of use.
The content of the thickener is appropriately selected according to the viscosity required for the cosmetic.

[Other ingredients]
Since the aqueous cosmetic composition of the present invention contains a large amount of water as a medium, components that are soluble in the aqueous medium may be used in accordance with the purpose as long as the effects of the present invention are not impaired.
The component that can be used in combination with water is not particularly limited as long as it is compatible with water, or can be dissolved or uniformly dispersed in water, and is an aqueous organic solvent, various water-soluble, and water-dispersible active ingredients. Etc. may be used in combination.
Examples of the component added to the aqueous phase as desired include monohydric alcohols such as ethanol, propanol, isopropanol, isobutyl alcohol, and t-butyl alcohol;
Α-hydroxy acids such as aminocaproic acid, citric acid, lactic acid, glycolic acid and tartaric acid and salts thereof such as sodium and potassium;
Antioxidants such as ascorbic acid and sodium pyrosulfite;
Preservatives such as methylparaben, sodium dehydroacetate, sodium benzoate, phenoxyethanol;
Chelating agent placental extract such as salicylic acid, edetic acid, metaphosphoric acid, nicotinic acid amide, pantotenyl ethyl ether, pantothenic acid, dipotassium glycyrrhizinate, biotin, pyridoxine hydrochloride, adenosine triphosphate, α-lipoic acid, royal jelly, 3 Drugs such as -O-ethylascorbic acid, magnesium ascorbate phosphate, glucoside ascorbate, arbutin, glucosyl hesperidin, glucosyl rutin;
Etc.

Moreover, you may use together moisturizers other than ceramides.
The humectant used in the cosmetic of the present invention is not particularly limited as long as it is a known humectant used in cosmetics. For example, propylene glycol, 1,3-propanediol, 1,2-butylene glycol, Polyhydric alcohols such as 1,3-butylene glycol, 1,2-pentanediol, hexylene glycol, glycerin, trimethylolpropane, dipropylene glycol, polypropylene glycol, polyethylene glycol, diglycerin, triglycerin, tetraglycerin, polyglycerin Polyhydric alcohol polymer such as dipropylene glycol ethyl ether, polyoxybutylene (hereinafter POB) polyoxyethylene (hereinafter POE) polyoxypropylene (hereinafter POP) glyceryl ether, POE diglyceryl ether Which polyhydric alcohol derivative, erythrose, erythrulose, threose, deoxyribose, lyxose, arabinose, ribose, ribulose, xylulose, glucose, talose, psicose, galactose, mannose, tagatose, fucose, fucose, rhamnose, sedhebutulose, sucrose, maltose, tulanose , Cellobiose, lactose, trehalose, raffinose, melezitose, maltotriose, acarbose, stachyose, fructooligosaccharides, saccharides such as galactooligosaccharide, mannan oligosaccharide, dextrin, erythritol, arabinitol, xylitol, sorbitol, maltitol, mannitol, dulcitol, etc. Sugar alcohol, glucosyl trehalose, glucoscorbate , Sugar derivatives such as POE methyl glucoside, POP methyl glucoside, hydroxypropyl-β-cyclodextrin, sorbitol phosphate ester, xylitol phosphate ester, sugar alcohol derivative such as POE maltitol, glycine, threonine, alanine, tyrosine, valine Amino acids such as leucine, arginine, lysine, proline, aspartic acid, glutamic acid, serine, hydroxyproline and derivatives thereof, pyrrolidone carboxylates such as sodium pyrrolidonecarboxylate, sodium chondroitin sulfate, sodium hyaluronate, betaine, urea, POE -POP dimethyl ether etc. are mentioned. It can be used alone or in combination of two or more.
Among these humectants, a water-soluble humectant is preferable from the viewpoint of stability.
The moisturizing agent is not particularly limited, and may be appropriately selected and used in consideration of the purpose of the cosmetic of the present invention and the affinity with components used in combination.
As a content rate of a moisturizer, it is preferable that it is the range of 2 mass%-30 mass% with respect to all the components used for cosmetics.

Depending on the purpose, oil-soluble components and the like may be added as long as they are in a small amount. Examples of the oil-soluble component include antiseptics such as ethyl paraben and propyl paraben, and oil-soluble ultraviolet absorbers.
Examples of the oil-soluble ultraviolet absorber include octyl methoxycinnamate, butyl methoxycinnamate, isopropyl methoxycinnamate, methylbis (trimethylsiloxy) silylisopentyl trimethoxycinnamate, glyceryl di-2-methoxycinnamate mono-2-ethylhexanoate, 4- tert-butyl-4'-methoxydibenzoylmethane, 2,4,6-tris [4- (2-ethylhexyloxycarbonyl) anilino] 1,3,5-triazine, sodium hydroxymethoxybenzophenonesulfonate, octyl salicylate, salicylic acid Homomenthyl, methylbenzylidene camphor, 2-cyano-3,3-diphenylprop-2-enoic acid-2-ethylhexyl ester, 2,4-bis {[4- (2-ethylhexyloxy) -2-hydroxy] phenyl } -6- (4-Methoxyphenyl) 1,3,5-triazine, 2,2′-methylene-bis {6- (2H-benzotriazol-2-yl) -4- (1,1,3,3) -Tetramethylbutyl) phenol} and the like.
Moreover, you may contain a fragrance | flavor, a pigment | dye, etc.

The aqueous cosmetic of the present invention can be produced by a commonly used method.
The production method is prepared by adjusting an aqueous phase component obtained by adding various water-soluble components to water, and an oil phase component obtained by heating, dissolving, and mixing ceramides and an oil component, and mixing and stirring them. This is the simplest manufacturing method. However, the method for producing the cosmetic of the present invention is not limited to a preparation method using a general emulsifying apparatus, and may be appropriately determined depending on the intended quality characteristic value and the like. Here, as a method of heating, dissolving, and mixing, it is sufficient to heat and mix under the condition that the ceramide is uniformly mixed with the oil component, and the ceramide is added by adding the ceramide while the oil component is heated. Any method may be employed such as heating the mixture with the oil component while stirring.

  The cosmetic of the present invention has a refreshing feeling while having a moist feeling due to ceramide, and has a transparent appearance over a long period of time not only at room temperature but also in a high temperature atmosphere exceeding 40 ° C. It is a lotion or gel that is maintained and has excellent stability over time, and can be suitably used particularly as a cosmetic (quasi-drug).

  The present invention will be described more specifically with reference to the following examples. The materials, amounts used, ratios, processing details, processing procedures, and the like shown in the following examples can be changed as appropriate without departing from the spirit of the present invention. Therefore, the scope of the present invention is not limited to the specific examples shown below.

[Example 1, Comparative Examples 1-3]
In accordance with the prescription described in Table 1 below, No. 6 and 7 were mixed and heated to 90 ° C. and dissolved. Add 1, 2, 4, 8 and stir at 35 ° C. for 15 minutes and mix and stir.
This was weighed in another container and added to the other components added and stirred at 35 ° C. for 15 minutes to obtain a transparent lotion.

In addition, the detail of each component in following Table 1 is as follows.
6) Isostearyl alcohol (made by Higher Alcohol Industry, trade name: Isostearyl alcohol EX)
7) Ceramide 2 (trade name: Celamido TIC-001, manufactured by Takasago Inc.)
9) POE (60 mol addition) hydrogenated castor oil (manufactured by Nikko Chemicals, trade name: NIKKOL-HCO-60)

Next, the obtained transparent lotion was evaluated by the evaluation methods and evaluation criteria described below. The results are also shown in Table 1 below.
(1) Long-term stability After storage for 1 month under each temperature condition of 0 ° C., room temperature, and 50 ° C., the presence or absence of changes in appearance such as separation of emulsified cosmetics was visually confirmed and evaluated according to the following criteria. In addition, what was evaluated as (double-circle) and (circle) shows stability sufficient practically.
A: No abnormality such as appearance change, viscosity change, separation, etc. is observed at each temperature.
○: When stored at 50 ° C., slight abnormalities such as changes in appearance, changes in viscosity, and separation are observed.
Δ: Abnormalities such as change in appearance, change in viscosity, separation, etc. are observed when stored at 40 ° C. and 50 ° C.
X: Abnormalities such as changes in appearance, changes in viscosity, and separation are observed at any temperature.
(2) Transparency Transparency is measured using a spectrophotometer (Shimadzu UV-visible spectrophotometer UV-1800, Shimadzu Corporation, optical path length 10 mm), and the transmittance when the transmittance of purified water is 100 as a control. It was evaluated with. Those having a transmittance in the range of 90 to 100 correspond to the transparency of the present invention.
A: Transmittance of 95 to 100 (transparent region)
○: Transmittance of 90 to less than 95 (translucent to transparent region)
Δ: Transmittance of 60 to less than 90 (translucent region)
×: Transmittance less than 60 (cloudy region)

(3) Usability Twelve female panels were asked to use cosmetics and have a sensory evaluation of the feeling of use, and evaluated according to the following criteria.
[Moisture feeling]
◎: 10 or more panels evaluated as having a very good moist feeling ○: 6 to 9 panels evaluated as having a very good moist feeling Δ: 4 to 5 panels evaluated as having a very excellent moist feeling ×: 3 or less panel evaluated as having a very good moist feeling [fresh feeling]
◎: More than 10 panelists evaluated that there was no stickiness when applied to the skin and the feeling of use was refreshing ○: 6 panels evaluated that there was no stickiness when applied to the skin and the feeling of use was refreshed ~ 9 people △: No stickiness when applied to the skin and 4-5 people evaluated that the feeling of use is refreshing ×: No stickiness when applied to the skin and evaluated that the feeling of use is refreshing Less than 3 panels

As shown in the results of Table 1, it can be seen that the lotion of Example 1 obtained in the present invention is an aqueous lotion having good stability, moist feeling and refreshing feeling of use.
On the other hand, in Comparative Examples 1-3 which do not contain either (C) specific hydrophilic surfactant and (D) water-soluble amphiphilic component concerning this invention, it turns out that it is inferior to transparency and storage stability.

[Example 2, Comparative Examples 4 to 5]
According to the prescription described in Table 2 below, a transparent gel was obtained by adjusting in the same manner as in Example 1.
In addition, the detail of each component in following Table 2 is as follows.
6) Isostearyl alcohol (made by Higher Alcohol Industry, trade name: Isostearyl alcohol EX)
7) Evening primrose oil (Nisshin Oilio Co., Ltd.)
9) Ceramide 2 (trade name: Celamido TIC-001, manufactured by Takasago Inc.)
10) Isostearoyl hydrolyzed collagen AMPD (AMPD: aminomethylpropanediol) (manufactured by Seiwa Kasei Co., Ltd., trade name: Promois EU-118D)
12) Carboxyvinyl polymer (trade name: Hibiswako 105, manufactured by Wako Pure Chemical Industries, Ltd.)

As shown in Table 2, it can be seen that the transparent gel of Example 2 according to the present invention is a cosmetic having excellent stability and excellent moist feeling and refreshing feeling during use. On the other hand, (D) Comparative Examples 4 and 5 which do not contain a water-soluble amphiphilic component were transparent immediately after production, but turbidity occurred with time, resulting in poor stability and a refreshing feeling, but also a moist feeling. It was insufficient.
Example 3
According to the prescription described in Table 3 below, a transparent whitening essence was obtained by the same method as in Example 1.
In addition, the detail of each component in following Table 2 is as follows.
6) Isostearyl alcohol (made by Higher Alcohol Industry, trade name: Isostearyl alcohol EX)
9) Ceramide 3 (Evonic Goldschmidt GmbH, trade name: Ceramido III)
10) Isostearoyl hydrolyzed collagen AMPD (AMPD: aminomethylpropanediol) (manufactured by Seiwa Kasei Co., Ltd., trade name: Promois EU-118D)
11) Carboxyvinyl polymer (manufactured by Wako Pure Chemical Industries, Ltd., trade name: Hibiswako 105)
12) Hydroxyethyl cellulose (manufactured by Wako Pure Chemical Industries, Ltd.)

  As shown in Table 3, it can be seen that the transparent whitening essence of Example 3 according to the present invention has a good stability, and is a cosmetic excellent in moisture and refreshing feeling during use. Thus, even if it was the gel-like cosmetics using a thickener, according to this invention, it was confirmed that the cosmetics of the outstanding transparency and the refreshing feeling of use can be provided.

Claims (4)

(A) a compound selected from ceramide and a ceramide analog;
(B) an oily component;
(C) a hydrophilic surfactant selected from hydrolyzed collagen and derivatives thereof;
(D) A transparent aqueous cosmetic containing a water-soluble amphiphilic component.   Furthermore, the transparent aqueous cosmetic of Claim 1 containing (E) thickener.   The (C) hydrophilic surfactant comprises a hydrolyzed collagen derivative selected from cocoyl hydrolyzed collagen, isostearoyl hydrolyzed collagen, undecylenoyl hydrolyzed collagen, and (dihydroxymethylsilylpropoxy) hydroxypropyl hydrolyzed collagen. The transparent water-based cosmetic according to claim 1, wherein the transparent aqueous cosmetic is one or more selected from the group.   The water-soluble amphiphilic component (D) is a polyalkylene polyglyceryl ether selected from polypropylene glycol-9 diglyceryl, polypropylene glycol-14 diglyceryl and polyoxypropylene polyglyceryl ether. 2. The transparent water-based cosmetic according to item 1.