JP2018165260A - Skin cosmetics - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a skin cosmetic having excellent stability in a skin cosmetic containing a nonionic surfactant and one or more compounds selected from the group consisting of 1,2-alkanediol having 5 to 10 carbon atoms and phenoxyethanol. To provide. SOLUTION: A skin cosmetic containing the following component A, component B, component C, component D, and component E and substantially free of a buffer. Component A: Nonionic surfactant, Component B: One or more compounds selected from the group consisting of 1,2-alkanediol having 5 to 10 carbon atoms and phenoxyethanol, Component C: Dipropylene glycol, Component D: Myristylglutamic acid One or more compounds and component E: water selected from the group consisting of salts, cocoyl glutamate, and PEG-12 laurate. [Selection diagram] None

Description

  The present invention relates to a skin cosmetic.

  Conventionally, in cosmetic compositions, nonionic surfactants such as polyoxyethylene fatty acid esters and fatty acid polyglyceryl have been used as components for solubilizing sparingly soluble components such as fragrances and cleansing cosmetics. . Moreover, 1,2-alkanediol and phenoxyethanol may be mix | blended with a cosmetic composition from a viewpoint of improving antiseptic power.

  For example, Patent Document 1 discloses (A) 70 to 95% by weight of water and (B) polyhydric alcohol (C) polyoxyethylene as a cleansing lotion that is excellent in cleansing power against fat and oil stains and has little stickiness after use. (Capryl / capric acid) glyceryl, (D) polyoxyethylene glyceryl isostearate, (E) polyvinyl pyrrolidone, polyoxyalkylene diglyceryl ether, polyethylene glycol monolaurate, diethoxyethyl succinate, cyclohexane-1.4-dicarboxylic acid A cleansing lotion composition containing at least one selected from bisethoxydiglycol and not washed away is disclosed.

JP 2012-214406 A

  However, in the system in which the 1,2-alkanediol and phenoxyethanol are blended, there is a problem that the temperature stability of the nonionic surfactant tends to be lowered.

  An object of the present invention is a skin having excellent stability in a skin cosmetic comprising a nonionic surfactant and one or more compounds selected from the group consisting of 1,2-alkanediol having 5 to 10 carbon atoms and phenoxyethanol. To provide cosmetics.

The skin cosmetic of the present invention is a skin cosmetic containing the following component A, component B, component C, component D, and component E and substantially free of a buffer.
Component A: Nonionic surfactant Component B: One or more compounds selected from the group consisting of 1,2-alkanediol having 5 to 10 carbon atoms and phenoxyethanol Component C: Dipropylene glycol Component D: Myristoyl glutamate, cocoyl One or more compounds selected from the group consisting of glutamate and PEG-12 laurate Component E: Water

  According to the present invention, skin having excellent stability in a skin cosmetic comprising a nonionic surfactant and one or more compounds selected from the group consisting of 1,2-alkanediols having 5 to 10 carbon atoms and phenoxyethanol. Cosmetics can be provided.

  The skin cosmetic of the present invention comprises a nonionic surfactant; one or more compounds selected from the group consisting of 1,2-alkanediols having 5 to 10 carbon atoms and phenoxyethanol; dipropylene glycol; myristoyl glutamate, cocoyl glutamate One or more compounds selected from the group consisting of a salt and PEG-12 laurate; and at least water and substantially free of buffering agents. In the present specification, “substantially does not contain a buffer” means more specifically, the skin cosmetic of the present invention does not contain a buffer or is contained in 100% by mass of the skin cosmetic of the present invention. The content of the buffer is preferably 0.05% by mass or less, more preferably 0.01% by mass or less. Examples of the buffer include citric acid and / or a salt thereof, tartaric acid and / or a salt thereof, gluconic acid and / or a salt thereof, acetic acid and / or a salt thereof, phosphoric acid and / or a salt thereof, trometamol (trishydroxymethyl Aminomethane) and the like. Examples of the salt of the buffer include sodium salts and potassium salts.

  In the present specification, the “nonionic surfactant” is referred to as “component A”; and the “one or more compounds selected from the group consisting of 1,2-alkanediol having 5 to 10 carbon atoms and phenoxyethanol” are referred to as “ “Component B”; “Dipropylene glycol” as “Component C”; and “One or more compounds selected from the group consisting of myristoyl glutamate, cocoyl glutamate, and PEG-12 laurate” as “Component D”; The “water” may be referred to as “component E”.

  The mechanism by which the skin cosmetic of the present invention is excellent in stability is not clear, but is estimated as follows. In a skin cosmetic comprising a nonionic surfactant and one or more compounds selected from the group consisting of 1,2-alkanediol having 5 to 10 carbon atoms and phenoxyethanol, the nonionic surfactant that forms micelles In addition, it is considered that the curvature of the micelle becomes small and becomes unstable when 1,2-alkanediol or phenoxyethanol having a relatively large carbon number of 5 to 10 in the hydrophobic group part is contained. In the skin cosmetic of the present invention, the curvature of micelles is increased by blending dipropylene glycol and one or more compounds selected from the group consisting of myristoyl glutamate, cocoyl glutamate, and PEG-12 laurate. Therefore, it is considered that the stability is excellent.

  Component A is a “nonionic surfactant”. Component A functions, for example, as a detergent component in cleansing cosmetics, or functions as a component that solubilizes poorly soluble components such as fragrances.

  Examples of component A include polyoxyethylene alkyl ethers such as polyoxyethylene lauryl ether, polyoxyethylene cetyl ether, and polyoxyethylene stearyl ether; polyoxyethylene polyoxypropylene lauryl ether, polyoxyethylene polyoxypropylene cetyl ether, Polyoxyethylene polyoxypropylene stearyl ether, polyoxyethylene polyoxypropylene decyl tetradecyl ether and other polyoxyethylene polyoxypropylene alkyl ethers; polyoxyethylene octyl phenyl ether, polyoxyethylene nonyl phenyl ether and other polyoxyethylene alkylphenyls Ether; sorbitan monolaurate, sorbitan monostearate, sol monooleate Sorbitan fatty acid esters such as tan; polyoxyethylene sorbitan fatty acid esters such as polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan trioleate; glyceryl laurate, glyceryl myristate, glyceryl stearate, Glycerin fatty acid esters such as glyceryl isostearate and glyceryl behenate; polyoxyethylene glyceryl monostearate, polyoxyethylene glyceryl monooleate, polyoxyethylene glyceryl triisostearate, polyoxyethylene (caprylic / capric acid) glyceryl, isostearic acid Polyoxyethylene fatty acid glyceryl such as polyoxyethylene glyceryl; diglyceryl monostearate Polyglycerin fatty acid ester such as monooleic acid decaglyceryl, caprylic acid polyglyceryl, lauric acid polyglyceryl; polyoxyethylene fatty acid ester such as polyethylene glycol monolaurate and polyethylene glycol monostearate; polyoxyethylene castor oil; hydrogenated castor oil; Examples include oxyethylene hydrogenated castor oil; polyoxyethylene lanolin; polyoxyethylene reduced lanolin. Among them, when used in combination with Component B, the temperature stability tends to decrease easily, and from the viewpoint that the effect of improving the temperature stability due to the constitution of the present invention is further exhibited, Component A is polyglycerin. A fatty acid ester is preferred. Component A may use only 1 type and may use 2 or more types.

  The HLB (Hydrophile-Lipophile Balance) of component A is not particularly limited, but is preferably 9.0 or more, more preferably 10.0 or more, for example, from the viewpoint of improving the cleansing power of skin cosmetics. Is 15.5 or less. In the present specification, the HLB can be obtained by the Griffin method. The HLB when a plurality of components A are used can be obtained by a weighted average of the HLB of each component A.

  The content of component A in 100% by mass of the skin cosmetic of the present invention is preferably 0.1% by mass or more, more preferably 1.0% by mass or more, from the viewpoint of improving cleansing power and solubilizing power. More preferably, it is 2.0% by mass or more, and preferably 10.0% by mass or less, more preferably 7.0% by mass from the viewpoint of the stability, safety, reduction of stickiness, etc. of skin cosmetics. % Or less, and more preferably 5.5% by mass or less. The content of component A is the total amount of all components A contained in the skin cosmetic of the present invention.

  Component B is “one or more compounds selected from the group consisting of 1,2-alkanediols having 5 to 10 carbon atoms and phenoxyethanol”. By blending component B, the antiseptic power of the skin cosmetic can be improved.

  The 1,2-alkanediol is one having 5 to 10 carbon atoms from the viewpoint of antiseptic power. Examples of the 1,2-alkanediol include 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol, 1,2-decanediol, and the like. Only 1 type may be used for the said 1, 2- alkanediol, and 2 or more types may be used for it. Among these, 1,2-octanediol and 1,2-decanediol are preferable from the viewpoint of antiseptic power.

  The content of component B in 100% by mass of the skin cosmetic of the present invention is preferably 0.005% by mass or more, more preferably 0.01% by mass or more, from the viewpoint of improving the antiseptic power of the skin cosmetics. More preferably 0.1% by mass or more, and preferably 5.0% by mass or less, more preferably 3.0% by mass or less, from the viewpoint of the stability and safety of the skin cosmetics. More preferably, it is 2.0 mass% or less. The content of component B is the total amount of all components B contained in the skin cosmetic of the present invention.

  Especially, it is preferable that the component B contains a phenoxyethanol as an essential component from a viewpoint of irritation | stimulation reduction. That is, component B is preferably phenoxyethanol, or phenoxyethanol and 1,2-alkanediol having 5 to 10 carbon atoms. The content of phenoxyethanol in 100% by mass of the skin cosmetic of the present invention is preferably 0.01% by mass or more, more preferably 0.1% by mass or more, and preferably 3.0% by mass or less. More preferably, it is 1.5 mass% or less.

  Component C is “dipropylene glycol” (may be abbreviated as “DPG”). By blending Component C, the stability of the skin cosmetic can be improved. This is because, by adding component C, the affinity between component A and the aqueous solvent is improved, and the curvature of micelles is increased by increasing the amount of the aqueous component solvated in the hydrophilic group portion of component A. It is estimated to be.

  The content of component C in 100% by mass of the skin cosmetic of the present invention is preferably 0.8% by mass or more, more preferably 1.5% by mass or more, from the viewpoint of the stability of the skin cosmetics. More preferably, it is 3.0% by mass or more, preferably 25.0% by mass or less, more preferably 20.0% by mass or less, and further preferably 15.0% by mass or less.

  Component D is “one or more compounds selected from the group consisting of myristoyl glutamate, cocoyl glutamate, and PEG-12 laurate (that is, polyethylene glycol ester of lauric acid (average added mole number of oxyethylene = 12)). Is. By mix | blending component D, stability of skin cosmetics can be improved. This is because, by blending component D, component D is oriented at the micelle interface (hydrophilic group portion) and electrostatic repulsion is increased (when component D is myristoyl glutamate or cocoyl glutamate) It is estimated that the micelle curvature increases due to steric hindrance due to the hydration phase (when component D is PEG-12 laurate).

  Component D is not particularly limited, but sodium myristoyl glutamate (myristoyl glutamate Na), potassium myristoyl glutamate, sodium cocoylglutamate (Na cocoylglutamate), potassium cocoylglutamate, and lauric acid PEG-12 are preferred. Component D may use only 1 type and may use 2 or more types.

  The content of component D in 100% by mass of the skin cosmetic of the present invention is preferably 0.06% by mass or more, more preferably 0.09% by mass or more, from the viewpoint of the stability of the skin cosmetics. , Preferably it is 0.5 mass% or less, More preferably, it is 0.25 mass% or less, More preferably, it is 0.2 mass% or less. The content of component D is the total amount of all components D contained in the skin cosmetic of the present invention.

  Component E is “water”. Ingredient E plays a role as a medium for aqueous cosmetics such as lotions.

  The content of Component E in 100% by mass of the cosmetic of the present invention is preferably 50.0% by mass or more, more preferably 60.0% by mass or more, and further preferably 70.0% by mass or more. From the viewpoint of containing other components, it is preferably 98.0% by mass or less, more preferably 95.0% by mass or less, and further preferably 90.0% by mass or less.

  From the viewpoint of improving the cleansing power of the skin cosmetic, the skin cosmetic of the present invention further contains “PPG-14 diglyceryl”, that is, polyoxypropylene diglyceryl ether (average added mole number of oxypropylene = 14).

  The content of component F in 100% by mass of the cosmetic of the present invention is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, from the viewpoint of improving the cleansing power of the skin cosmetics. Yes, more preferably 0.1% by mass or more, and from the viewpoint of storage stability, it is preferably 8.0% by mass or less, more preferably 6.0% by mass or less, and still more preferably 4.0%. It is below mass%.

  The skin cosmetic of the present invention may further contain N-coconut oil fatty acid acyl-L-arginine ethyl · DL-pyrrolidone carboxylate as component G from the viewpoint of improving the antiseptic power of the skin cosmetic. As component G, CAE (made by Ajinomoto Co., Inc.) etc. are mentioned, for example.

  The content of Component G in 100% by mass of the skin cosmetic of the present invention is preferably 0.001% by mass or more, more preferably 0.005% by mass or more, from the viewpoint of improving the antiseptic power of the skin cosmetics. More preferably, it is 0.01% by mass or more, and from the viewpoint of storage stability, it is preferably 0.1% by mass or less, more preferably 0.08% by mass or less, and still more preferably 0.8%. 05% by mass or less.

  The skin cosmetic of the present invention can further optionally contain other components other than those described above. Examples of other components include surfactants other than Component A and Component D (cationic surfactants, anionic surfactants, amphoteric surfactants, etc.), lower alcohols, polyhydric alcohols, ultraviolet absorbers, powders, Antioxidants, antiseptics, fragrances, coloring agents, chelating agents, refreshing agents, thickeners, vitamins, neutralizing agents, amino acids, whitening agents, anti-inflammatory agents, deodorants, animal and plant extracts, sequestering agents And the like. Only 1 type may be used for said other component, and 2 or more types may be used for it.

  The skin cosmetic of the present invention has the effect of the invention when it does not substantially contain an oily component selected from the group consisting of ester oils, fats and oils, hydrocarbon oils, waxes, higher fatty acids, silicone oils and higher alcohols. It is even more pronounced. More specifically, the skin cosmetic of the present invention does not contain the oil component, or the content of the oil component in 100% by mass of the skin cosmetic of the present invention is preferably 0.1% by mass or less, More preferably, it is 0.01 mass% or less. In the case of an emulsified cosmetic containing the oil component, the nonionic surfactant is relatively difficult to destabilize.

  When the skin cosmetic of the present invention is particularly a cleansing cosmetic, the skin cosmetic of the present invention may contain pullulan. By blending pullulan, when the makeup is wiped off by impregnating the cleansing cosmetic into a nonwoven fabric or when the makeup is wiped off with a sheet product impregnated with the cleansing cosmetic, it is preferable because friction between the skin and the nonwoven fabric is reduced. . The content of pullulan in 100% by mass of the skin cosmetic of the present invention is preferably 0.01% by mass or more, more preferably 0.03% by mass or more, from the viewpoint of reducing friction during wiping. From the viewpoint of reducing the sliminess at the time, it is preferably 0.2% by mass or less, and more preferably 0.1% by mass or less.

  Although it does not specifically limit as a dosage form of the skin cosmetics of this invention, For example, various dosage forms, such as a lotion, a gel, a natural spray, a roll on, a sheet | seat (paper), are mentioned. Of these, lotion is more preferable.

  Although it does not specifically limit as skin cosmetics of this invention, For example, it aims at cleansing cosmetics, moisturizing cosmetics, whitening cosmetics, cosmetics for acne care, anti-aging cosmetics (for example, wrinkle suppression, sagging suppression, etc. Skin care cosmetics such as); scalp care cosmetics (for the purpose of moisturizing, sebum suppression, etc.); deodorant cosmetics; sunscreen cosmetics; shaving cosmetics; Among these, the cosmetic of the present invention is more preferably a cleansing cosmetic. The skin cosmetic of the present invention may be any of cosmetics, quasi drugs, pharmaceuticals, and sundries, for example.

  The site to which the skin cosmetic of the present invention is applied is not particularly limited, but includes a face (for example, forehead, eyes, eyes, cheeks, mouth, etc.), arms, elbows, back of hands, fingertips, feet, knees, heels, neck, Aside, back, scalp, etc.

  The skin cosmetic of the present invention can be produced by mixing the above-described components and stirring them using a known method such as a paddle mixer.

  When the skin cosmetic composition of the present invention is a cleansing cosmetic composition, the cleansing cosmetic composition can be preferably used both in a usage method in which it is washed away after makeup removal or in a usage method in which it is not washed out after makeup removal (for example, wiping off). The usage method of the said cleansing cosmetic is not specifically limited, For example, the usage method of a well-known cleansing cosmetic is mentioned. Specifically, for example, a method of removing the cleansing cosmetic by taking it in hand and applying it directly to the makeup on the skin; soaking the cleansing cosmetic into a cloth such as cotton (woven fabric, non-woven fabric, etc.) The method of wiping off the makeup on the skin can be mentioned. Furthermore, a method of preparing a sheet product in which the cleansing cosmetic is soaked in a sheet base material in advance and wiping off the makeup with the sheet product is also included. The skin after removing the makeup may or may not be washed away. That is, the skin cosmetic of the present invention may be a cleansing cosmetic that is washed away or a cleansing cosmetic that is not washed away. Among them, the skin cosmetic of the present invention is preferably a cleansing cosmetic that is used without being washed away (particularly a cleansing cosmetic for wiping off).

  When the skin cosmetic of the present invention is a cleansing cosmetic, a sheet product for cleansing is obtained by impregnating the cleansing cosmetic into a sheet base material. That is, the sheet product includes at least the sheet base material and the cleansing cosmetic impregnated in the sheet base material. The sheet product may contain components other than the sheet base material and the cleansing cosmetic.

  The said sheet | seat base material is not specifically limited, The sheet-like support body which can be impregnated with the said cleansing cosmetics. As said sheet | seat base material, a woven fabric and a nonwoven fabric are preferable. The sheet substrate may be a laminate (that is, a laminate sheet), and may be, for example, a woven fabric laminate, a nonwoven fabric laminate, a woven fabric / nonwoven fabric laminate, or the like. The sheet base material is preferably a sheet base material including a non-woven fabric, more preferably a non-woven fabric, from the viewpoints of usability, ease of processing, and the like. Examples of the nonwoven fabric include spunbond nonwoven fabric, spunlace nonwoven fabric, thermal bond nonwoven fabric, needle punch nonwoven fabric, and stitch bond nonwoven fabric.

  The fiber constituting the woven fabric or the nonwoven fabric is not particularly limited, and examples thereof include natural fibers, synthetic fibers, and semi-natural fibers. Examples of the natural fiber include cotton, pulp, silk, cellulose, hemp, linter, and kabok. Examples of the synthetic fiber include nylon fiber, polyester fiber (eg, polyethylene terephthalate fiber, polybutylene terephthalate fiber, etc.), acrylic fiber, polyolefin fiber (eg, polypropylene fiber, polyethylene fiber, etc.), and the like. Examples of the semi-natural fiber include rayon and acetate. Only 1 type may be used for the said fiber and 2 or more types may be used for it. Moreover, you may use the blended fiber which consists of 2 or more types of said fibers.

Basis weight of the sheet substrate is not particularly limited, in view of wiping comfort, preferably 20 to 100 g / ^{m 2,} more preferably from 25~80g / ^{m 2.}

  The sheet substrate can be produced by a known and commonly used production method according to the type of woven fabric or nonwoven fabric. Moreover, the said sheet | seat base material can also use a commercial item. Although it does not specifically limit as a commercial item, For example, Daiwabo Polytech Co., Ltd. product name "RH"; Daiwabo Polytech Co., Ltd. product name "AS-40"; Futamura Chemical Co., Ltd. product name "TCF404WJ"; Unitika Co., Ltd., trade name “Cot Ace A060S / A18”; Unitika Ltd., trade name “Cot Ace C030S / A18”; Kuraray Co., Ltd., trade name “Kuraflex JP2445B019”; Kuraray Co., Ltd., trade name “Kuraflex JP0509B056”; manufactured by Kuraray Co., Ltd., trade name “Kuraflex JP4250H023”; manufactured by Asahi Kasei Co., Ltd., trade name “Benryse JP254”; , Trade name "Sunmore SP8740" Manufactured by Sansho Paper Industry Co., Ltd., trade name “Sunmore SP8748”; manufactured by Ino Paper Co., Ltd., trade name “M1-30-2PE”.

  Although the mass ratio of the said cleansing cosmetic impregnated with respect to the said sheet base material in the said sheet product is not specifically limited, The said cleansing cosmetic is 1.0-10 with respect to 1.0 mass part of the said sheet base materials. It is preferably 0.0 parts by mass, more preferably 1.5 to 7.0 parts by mass.

The sheet product has a sheet shape. Thereby, it is excellent in the usability in the usage form which wipes skin (skin), and is excellent also in portability. The planar shape of the sheet is not particularly limited. For example, a quadrilateral (for example, a square, a rectangle, etc.), a polygon such as a triangle; a circle, an ellipse, a semicircle; a crescent shape; a barrel shape; a drum shape; Is mentioned. Among these, a rectangular shape is preferable from the viewpoints of productivity, usability, and packing properties. The sheet product of the present invention may be molded with a cut portion, a cutout portion, an uneven portion, or the like. The surface area of one side of the sheet of the sheet product is not particularly limited, usability, portability, from the viewpoint of packaging properties, preferably 100～3000Cm ^2, more preferably 150~1000cm ^2.

  Although the usage method of the said sheet product is not specifically limited, The method of wiping off the makeup on skin with this sheet product is mentioned. The sheet product is preferably a wiping sheet product that is used by wiping on the skin.

  EXAMPLES Hereinafter, although this invention is demonstrated further in detail based on an Example, this invention is not limited only to these Examples. In addition, a compounding quantity and content are the quantity converted into the pure part, and represent "mass%" unless it mentions specially.

Examples 1-8 and Comparative Examples 1-2 (Preparation of skin cosmetics)
The skin cosmetics of Examples 1 to 8 and Comparative Examples 1 to 2 were prepared by a conventional method according to the composition described in Table 1. The pH of Example 1 at 25 ° C. was 5.5.

  The detail of each raw material in an Example, a comparative example, and a prescription example is as follows. In addition, the amount described in Table 1 is not the amount of merchandise but the amount of each component (amount of active ingredient).

PEG-6 (caprylic acid / capric acid) glycerides: manufactured by Kyoyo Fine Chemical Co., Ltd., polyoxyethylene (caprylic / capric acid) glyceryl, HLB: 14.5
Polyglyceryl-3 caprylate: manufactured by Evonik Nutrition & Care GmbH, trade name “TEGO® Cosmo P 813”, HLB: 11.1
Polyglyceryl-10 laurate: manufactured by Nikko Chemicals, trade name “NIKKOL Decaglyn 1-L”, polyglyceryl monolaurate, HLB: 17.1
Phenoxyethanol: Product name “Caflect PE-1” manufactured by Kyoyo Fine Chemical Co., Ltd.
Dipropylene glycol: Asahi Glass Co., Ltd., trade name “DPG-FC”
Myristoyl glutamate Na: manufactured by Ajinomoto Co., Inc., trade name “Amisoft MS-11”, N-myristoyl-L-sodium glutamate cocoyl glutamate Na: Ajinomoto Co., Inc., trade name “Amisoft ECS-22SB”, N-coconut oil fatty acyl-L -Sodium glutamate lauric acid PEG-12: manufactured by Kao Corporation, trade name "Emanon 1112"
PPG-14 diglyceryl: Sakamoto Yakuhin Kogyo Co., Ltd., trade name “SY-DP14T”, polyoxypropylene diglyceryl ether N-coconut oil fatty acid acyl-L-arginine ethyl DL-pyrrolidone carboxylate: Ajinomoto Co., Inc. Name “CAE”, Cocoyl Arginine Ethyl PCA
Pullulan: Made by Hayashibara Co., Ltd., trade name “PULLLULAN (COSMETIC GRADE)”

  About the skin cosmetics of each Example and a comparative example, stability in -3 degreeC and 50 degreeC was evaluated as follows.

(Stability evaluation (-3 ° C))
The skin cosmetics of each Example and Comparative Example (100 ml each) were stored in a thermostatic bath at -3 ° C for 7 days, then visually observed under a -3 ° C environment, and evaluated according to the following criteria. The results are shown in Table 1.
A (excellent): colorless and transparent, and no insoluble matter is observed.
○ (Good): Slight turbidity is observed, but no insoluble matter is observed.
Δ (usable): Slightly insoluble matter is observed.
X (defect): Insoluble matter is clearly observed.

(Stability evaluation (50 ° C))
The skin cosmetics of each Example and Comparative Example (100 ml each) were stored for 7 days in a constant temperature bath at 50 ° C., then visually observed under a 50 ° C. environment, and evaluated according to the following criteria. The results are shown in Table 1.
A (excellent): colorless and transparent, and no insoluble matter is observed.
○ (Good): Slight turbidity is observed, but no insoluble matter is observed.
Δ (usable): Slightly insoluble matter is observed.
X (defect): Insoluble matter is clearly observed.

  As the result of Table 1 shows, the skin cosmetics of each Example containing Component A, Component B, Component C, Component D, and Component E were excellent in stability. On the other hand, it can be seen that the skin cosmetics of Comparative Example 1 not containing Component C and Comparative Example 2 not containing Component D had a problem in stability.

Formulation Example 1: Cleansing Lotion PEG-6 (Caprylic acid / Capric acid) Glyceriz 1.0% by mass
Polyglyceryl-3 caprylate 1.0% by mass
Polyglyceryl-10 laurate 2.0% by mass
Phenoxyethanol 0.3% by mass
Dipropylene glycol 10.0% by mass
Myristoyl glutamate Na 0.03% by mass
Purified water balance N-coconut oil fatty acid acyl-L-arginine ethyl DL-pyrrolidone carboxylate
0.05% by mass
Edetate disodium 0.1% by mass
Glycerin 5.0% by mass
Ethanol 5.0% by mass
Total 100.0% by mass

Formulation Example 2: Cleansing Sheet <Cleansing Cosmetic>
PEG-6 (Caprylic acid / Capric acid) Glyceriz 1.0% by mass
Polyglyceryl-3 caprylate 1.0% by mass
Polyglyceryl-10 laurate 2.0% by mass
Phenoxyethanol 0.3% by mass
Dipropylene glycol 10.0% by mass
Myristoyl glutamate Na 0.03% by mass
Purified water balance N-coconut oil fatty acid acyl-L-arginine ethyl DL-pyrrolidone carboxylate
0.05% by mass
Edetate disodium 0.1% by mass
Glycerin 5.0% by mass
Ethanol 5.0% by mass
Fragrance 0.2% by mass
Pullulan 0.07% by mass
Total 100.0% by mass
<Sheet base material>
Nonwoven fabric (50% pulp, 50% rayon) 100.0% by mass
The cleansing cosmetic was impregnated with 4.0 parts by mass with respect to 1.0 part by mass of the sheet base material.

  The skin cosmetics of the present invention are skin care cosmetics such as cleansing cosmetics, moisturizing cosmetics, whitening cosmetics, acne care cosmetics, anti-aging cosmetics (for example, for the purpose of suppressing wrinkles and sagging). Scalp care cosmetics (for the purpose of moisturizing, sebum suppression, etc.); deodorant cosmetics; sunscreen cosmetics; shaving cosmetics;

Claims (4)

A skin cosmetic comprising the following component A, component B, component C, component D, and component E, and substantially free of a buffer.
Component A: Nonionic surfactant Component B: One or more compounds selected from the group consisting of 1,2-alkanediol having 5 to 10 carbon atoms and phenoxyethanol Component C: Dipropylene glycol Component D: Myristoyl glutamate, cocoyl One or more compounds selected from the group consisting of glutamate and PEG-12 laurate Component E: Water Furthermore, the skin cosmetics of Claim 1 containing the following component F.
Component F: PPG-14 diglyceryl Furthermore, the skin cosmetics of Claim 1 or 2 containing the following component G.
Component G: N-coconut oil fatty acid acyl-L-arginine ethyl DL-pyrrolidone carboxylate   The skin cosmetic according to any one of claims 1 to 3, which is a cleansing cosmetic.