JP7794026B2 - Skin cosmetics - Google Patents

Description

The present invention relates to a skin cosmetic that has excellent moisturizing effects, is less sticky, and provides a smooth feeling, and these effects are maintained even when wearing a mask, and furthermore, provides similar effects when used as a wipe-off cosmetic.

The skin has the important function of preventing moisture loss from the body and blocking external stimuli. To maintain the skin's natural functions, it is important to maintain a healthy state, such as by maintaining an appropriate level of moisture in the skin through skin care.

Skin care cosmetics that retain moisture contain a variety of moisturizing agents, and polyhydric alcohols, hyaluronic acid, and their analogues are known to be moisturizing ingredients with high moisture retention. However, using skin care cosmetics that contain a high amount of hyaluronic acid can cause the skin to feel sticky.

To solve this problem, Patent Document 1 proposes a skin cosmetic containing a phospholipid derivative, hydrolyzed hyaluronic acid, bilberry extract, a nonionic surfactant, and a specific copolymer to provide moisturizing effects while reducing stickiness. Patent Document 2 also proposes a skin cosmetic containing a specific arginine derivative and a water-soluble polymer compound. While these cosmetic products have moisturizing effects and also reduce stickiness, they are insufficient in providing a smooth feel to the skin.

To solve this problem, Patent Document 3 proposes a lotion containing a specific alkylene oxide addition derivative, a polyhydric alcohol, and a specific copolymer. This lotion has the effect of imparting a smooth feel to the skin while reducing stickiness.

On the other hand, in recent years, opportunities to wear masks have increased, and the increased frequency of contact between the mask and the skin can cause the skin to become rough and dry. Furthermore, the high humidity inside the mask can cause stickiness due to the secretion of sebum, which can reduce the moisturizing effect, reduce stickiness, and maintain a smooth feeling. The lotion described in Patent Document 3 also had similar issues.

Furthermore, to save time, there is a demand for cosmetics that can remove dirt such as sebum instead of washing the face and also provide skin care at the same time.

JP 2009-149624 A JP 2012-012311 A Japanese Patent Application Laid-Open No. 2021-100920

In light of the above circumstances, the present invention aims to provide a skin cosmetic that has excellent moisturizing effects, is less sticky, and can impart a smooth feeling, and these effects are maintained even when wearing a mask, and which also has the same effects when used as a wipe-off cosmetic.

The inventors conducted extensive research to solve the above problems and discovered that the above objectives could be achieved by using a composition combining an extract obtained from loquat leaves, acidic mucopolysaccharides, a specified polyhydric alcohol, and a specific copolymer as a skin cosmetic, thereby completing the present invention.
That is, the skin cosmetic of the present invention is as follows.

A skin cosmetic composition containing the following components (A), (B), (C) and (D):
(A) Extract obtained from loquat leaves: 0.0001 to 0.03 mass%
(B) Acidic mucopolysaccharides: 0.0001 to 0.05% by mass
(C) Dihydric to tetrahydric polyalcohols having 3 to 6 carbon atoms: 1 to 30% by mass
(D) A copolymer containing structural units represented by the following formulas (I) and (II): 0.0005 to 0.5% by mass
(wherein ^R1 represents a methyl group.)
(In the formula, ^R2 represents a methyl group, and ^R3 represents an alkyl group having 4 carbon atoms.)

The skin cosmetic of the present invention has an excellent moisturizing effect, is less sticky, and can impart a smooth feeling, and these effects are maintained even when wearing a mask, and further has the same effect when used as a wipe-off cosmetic.
In this specification, the term "wipe-off cosmetic" refers to a cosmetic such as a lotion that can be applied to a puff such as a cotton puff and wiped onto the skin to cleanse the skin.

Hereinafter, an embodiment of the present invention will be described, but various modifications are possible without departing from the gist of the present invention, and the present invention is not limited to the following embodiment.
In this specification, a numerical range defined using the symbol "to" is intended to include both the upper and lower limits of the range. For example, "2 to 5" means 2 or more and 5 or less.
Furthermore, when a concentration or amount is specified, any higher concentration or amount can be associated with any lower concentration or amount. For example, the descriptions "2 to 10% by mass" and "preferably 4 to 8% by mass" also encompass the descriptions "2 to 4% by mass,""2 to 8% by mass,""4 to 10% by mass," and "8 to 10% by mass."
Furthermore, "(meth)acrylic" refers to acrylic or methacrylic, and "(meth)acryloyl" refers to acryloyl or methacryloyl, respectively.

The skin cosmetic of the present invention contains (A) an extract obtained from loquat leaves, (B) an acidic mucopolysaccharide, (C) a dihydric to tetrahydric polyalcohol having 3 to 6 carbon atoms, and (D) a copolymer containing structural units represented by the following formulas (I) and (II):
Each component will be described below.

[Component (A): Extract obtained from loquat leaves]
Component (A) is an extract obtained from loquat leaves. The "loquat" used in the present invention refers to "Eriobotrya japonica" and is an extract extracted from its leaves. The loquat leaf extract of the present invention can be obtained by extracting loquat leaves, either whole or crushed, with an extraction solvent, but is not limited to this. These components are commercially available as cosmetic ingredients and are generally known to be rich in polyphenolic components such as tannins. Therefore, in the present invention, it is desirable to use an extract extracted from the leaves rather than one extracted from other parts of the loquat plant, such as the fruit or roots. The loquat leaf extract extracted by this method generally contains 0.1 to 3.0% by mass of pure loquat leaf.

In the present invention, examples of extraction solvents used in extracting loquat leaves include water and aqueous solvents. Examples of aqueous solvents include esters such as ethyl acetate; ketones such as acetone; ethers such as polyhydric alcohol alkyl ethers such as diethyl ether, tetrahydrofuran, and diethylene glycol ether; and alcohols such as lower alcohols and polyhydric alcohols. Among these, from the viewpoints of safety and extraction efficiency, water; lower alcohols such as methanol, ethanol, propanol, and isopropanol; and polyhydric alcohols such as propylene glycol, dipropylene glycol, 1,3-butylene glycol, and glycerin are preferred, with water, ethanol, and 1,3-butylene glycol being more preferred.
In the present invention, one solvent selected from the above-mentioned extraction solvents may be used alone, or a mixed solvent of two or more solvents may be used, with a mixed solvent of water and 1,3-butylene glycol being more preferred. For example, when the extraction solvent is water, extraction can be performed using typically 100 to 2,000 parts by weight, preferably 200 to 1,000 parts by weight, per 100 parts by weight of loquat leaves. Similarly, when the extraction solvent is a lower alcohol, extraction can be performed using typically 100 to 5,000 parts by weight, preferably 500 to 2,000 parts by weight.

The extraction temperature is determined appropriately depending on the type of extraction solvent used. For example, when the extraction solvent is water, the extraction temperature is usually about 20 to 120°C, and when the extraction solvent is a lower alcohol, the extraction temperature is usually about 30 to 80°C.
A common extraction method is used, for example, adding an extraction solvent to undried or dried loquat leaves, soaking them, optionally stirring, and then filtering to obtain an extract. Methods for drying loquat leaves include air drying, warm drying, and freeze drying. From the perspective of extraction efficiency, loquat leaves may be appropriately shredded.
The extraction time (soaking time) is usually 1 hour or more, preferably 3 hours or more, and more preferably 5 hours or more. From the viewpoint of extraction efficiency, the upper limit of the extraction time is usually 10 hours or less, and preferably 8 hours or less.
The number of times extraction is performed is not particularly limited, but it is preferable to perform extraction once with the above amount of water or aqueous solvent.

The obtained extract may be used as it is, or may be concentrated by distilling off the solvent, and if necessary, purified by treatment such as column chromatography or solvent fractionation, and further dried before use.
To make the extract easier to handle, it may be diluted with water or a polyhydric alcohol such as glycerin or 1,3-butylene glycol.
This extract may be commercially available.

The amount of component (A) blended is 0.00005 to 0.05% by mass, preferably 0.00008 to 0.04% by mass, and more preferably 0.0001 to 0.03% by mass, when the total mass of the skin cosmetic is 100% by mass. If the blended amount is too small, the smooth feeling, the durability when wearing a mask, and the effectiveness when used as a wipe-off cosmetic may be reduced. On the other hand, if the blended amount is too large, the lack of stickiness may be reduced.

[Component (B): Acidic mucopolysaccharides]
Component (B) is an acidic mucopolysaccharide. The "acidic mucopolysaccharide" used in the present invention is a component that is distributed in large amounts in connective tissue, cartilage, skin tissue, etc., has high water retention, and binds to collagen, which acts as a support for the extracellular matrix, helping to maintain the function and morphology of cells. In skin tissue, acidic mucopolysaccharides and collagen are present in large amounts in the dermis layer and are greatly involved in the water retention and elasticity of the skin. It is known that when the amount of these substances decreases due to aging, the skin loses its water retention and elasticity, causing rough skin and fine wrinkles.

Examples of the acidic mucopolysaccharides include acidic mucopolysaccharides such as hyaluronic acid, chondroitin-4-sulfate, chondroitin-6-sulfate, dermatan sulfate, keratan sulfate, and heparin; salts formed from acidic mucopolysaccharides and inorganic or organic alkalis; and acetylated acidic mucopolysaccharides. Inorganic salts of acidic mucopolysaccharides include alkali metal salts such as sodium salts and potassium salts, and organic salts include quaternary ammonium salts. Preferred salts are sodium salts and potassium salts.
Preferred are hyaluronic acid, chondroitin-4-sulfate, chondroitin-6-sulfate, or salts thereof, and more preferred are hyaluronic acid or salts thereof.
Among these acidic mucopolysaccharides, one kind can be used alone, or two or more kinds can be used in combination.
The acid mucopolysaccharides that can be used include commercially available products and prepared products.

The amount of component (B) blended is 0.0001 to 0.05% by mass, preferably 0.0005 to 0.04% by mass, and more preferably 0.001 to 0.03% by mass, when the total mass of the skin cosmetic is 100% by mass. If the blended amount is too small, the moisturizing feeling, the durability when wearing a mask, and the effectiveness when used as a wipe-off cosmetic may be reduced. On the other hand, if the blended amount is too large, the lack of stickiness may be reduced.

[Component (C): Di- to tetrahydric polyalcohol having 3 to 6 carbon atoms]
Component (C) is a polyhydric alcohol having 3 to 6 carbon atoms and a valence of 2 to 4. Examples of such polyhydric alcohols include glycerin, pentylene glycol, 1,3-butylene glycol, erythritol, propylene glycol, 1,3-propanediol, dipropylene glycol, diglycerin, hexylene glycol, and isoprene glycol. Among these, glycerin, pentylene glycol, 1,3-butylene glycol, propylene glycol, 1,3-propanediol, and diglycerin are preferred, with pentylene glycol, 1,3-butylene glycol, and propylene glycol being more preferred. As component (C), one selected from the above polyhydric alcohols can be used alone, or two or more can be used in combination.
When a solvent-diluted product obtained by diluting component (A) with a solvent corresponding to component (C) is used, the amount of component (C) may be reduced depending on the amount of solvent contained in the solvent-diluted product.

The amount of component (C) blended is 1 to 30% by mass, preferably 5 to 25% by mass, and more preferably 10 to 20% by mass, when the total mass of the skin cosmetic is 100% by mass. If the blended amount is too small, the moisturizing feeling and the effectiveness when used as a wipe-off cosmetic may be reduced. On the other hand, if the blended amount is too large, the lack of stickiness may be reduced.

[Component (D): Copolymer]
Component (D) is a copolymer containing structural units represented by the following formulas (I) and (II).

In formula (I), R ¹ represents a hydrogen atom or a methyl group.

In formula (II), ^R2 represents a hydrogen atom or a methyl group, and ^R3 represents an alkyl group having 4 to 18 carbon atoms.
The alkyl group represented by ^R3 is a linear or branched alkyl group having 4 to 18 carbon atoms, such as butyl, pentyl, hexyl, octyl, 2-ethylhexyl, decyl, dodecyl, tetradecyl, hexadecyl, octadecyl, etc. Preferred are linear alkyl groups such as butyl, dodecyl, and octadecyl, and more preferred are butyl and octadecyl.
If the number of carbon atoms in the alkyl group represented by ^R3 is less than 4, the moisturizing feeling at the applied site may decrease. On the other hand, if the number of carbon atoms in the alkyl group represented by ^R3 is more than 18, it may become difficult to dissolve the copolymer in water or an aqueous solvent.

In the copolymer serving as component (D), the ratio of the content of the structural units based on 2-(meth)acryloyloxyethyl phosphorylcholine represented by formula (I) above to the content of the structural units based on alkyl (meth)acrylate represented by formula (II) above ([structural units based on 2-(meth)acryloyloxyethyl phosphorylcholine]:[structural units based on alkyl (meth)acrylate]) (n1:n2) is preferably 10:1 to 1:5, more preferably 7:1 to 1:4, and even more preferably 5:1 to 1:3, in molar ratio.
If the ratio (n2/n1) (molar ratio) of the content of structural units based on alkyl (meth)acrylate to the content of structural units based on 2-(meth)acryloyloxyethyl phosphorylcholine is less than 0.1, the moist feeling at the applied site may decrease. On the other hand, if the ratio exceeds 5, the water absorption of the copolymer may decrease.

The weight average molecular weight of the copolymer is usually 10,000 to 1,000,000, preferably 30,000 to 900,000, and more preferably 50,000 to 800,000.
If the weight average molecular weight of the copolymer is too low, the moist feeling may not be obtained at the applied site, whereas if the weight average molecular weight of the copolymer is too high, handling may become difficult.
The weight average molecular weight of the copolymer is measured by gel permeation chromatography (GPC) and is expressed as a molecular weight converted into polyethylene glycol.

The polymerization form of the copolymer is not particularly limited, and may be a random copolymer or a block copolymer, but is preferably a random copolymer. The copolymer is usually a binary copolymer consisting of a structural unit based on 2-(meth)acryloyloxyethyl phosphorylcholine and a structural unit based on alkyl (meth)acrylate, but may also be a copolymer containing other structural units in addition to the aforementioned structural units.
Other structural units that may be contained in the copolymer can usually be appropriately selected from those that can be structural units of the copolymer, as long as they do not affect the effects of the present invention.
The content of other structural units in the copolymer is 40 mol % or less, and preferably 20 mol % or less, based on the total amount of structural units based on 2-(meth)acryloyloxyethyl phosphorylcholine and structural units based on alkyl (meth)acrylate.

The copolymer as component (D) can be produced by a known production method. For example, it can be produced by polymerizing a monomer mixture containing 2-(meth)acryloyloxyethyl phosphorylcholine and alkyl (meth)acrylate, and, if necessary, monomers corresponding to other structural units, in the presence of a radical polymerization initiator under an inert gas atmosphere such as nitrogen, by a known method such as solution polymerization. The content ratio of each monomer in this case may be set to a ratio corresponding to the desired content ratio of each structural unit in the copolymer.
The copolymer may be one produced by the polymerization method described above, or a commercially available product may be used. Examples of such products include commercially available products in the form of a copolymer dispersion, such as "LIPIDURE (registered trademark)-B,""LIPIDURE (registered trademark)-PMB (Ph10)," and "LIPIDURE (registered trademark)-NR" (all manufactured by NOF Corporation).
As component (D), one type selected from various copolymers differing in the structural units in the copolymer, the content ratio of each structural unit, and the weight average molecular weight may be contained alone, or two or more types may be contained in combination.
The form of the copolymer when blended into the skin cosmetic of the present invention is not particularly limited, and may be in any form, such as a solid form such as a powder, or a liquid form such as a solution or dispersion.

The amount of component (D) blended is 0.0005 to 0.5% by mass, preferably 0.001 to 0.4% by mass, and more preferably 0.005 to 0.3% by mass, when the total mass of the skin cosmetic is 100% by mass. If the blended amount is too small, the moisturizing feeling, non-stickiness, smooth feeling, and other effects when used as a wipe-off cosmetic may be reduced. On the other hand, if the blended amount is too large, the non-stickiness, smooth feeling, and other effects when used as a wipe-off cosmetic may be reduced.

The skin cosmetic of the present invention contains water, such as purified water, in addition to components (A) to (D). The water content is preferably 30 to 99% by mass, more preferably 35 to 90% by mass, and even more preferably 40 to 80% by mass, when the total mass of the skin cosmetic is taken as 100% by mass.

The skin cosmetic of the present invention may contain other components in addition to the above-mentioned components (A) to (D) and water, within the scope of not impairing the effects of the present invention. These other components may be those commonly used in cosmetics, such as lower alcohols such as ethanol, diols such as propylene glycol, thickeners such as carboxyvinyl polymers, oils, sugars, surfactants, organic salts, inorganic salts, pH adjusters, chelating agents, antioxidants, disinfectants, blood flow promoters, anti-inflammatory agents, UV absorbers, UV scattering agents, vitamins, amino acids such as arginine, pigments, and fragrances, within the scope of not impairing the performance of the skin cosmetic of the present invention.
When the skin cosmetic of the present invention contains other ingredients, the content of these ingredients is preferably 30% by mass or less, more preferably 20% by mass or less, and even more preferably 10% by mass or less, when the total mass of the skin cosmetic is 100% by mass.

The formulation of the skin cosmetic of the present invention is not particularly limited as long as it contains water, and examples include solutions, gels, emulsions, creams, lotions, foams, and mists. The skin cosmetic of the present invention can be manufactured using conventional methods depending on the formulation.

The following examples and comparative examples will further illustrate embodiments of the present invention. Note that the blending amounts and compositions shown in Tables 1 and 2 and below are in mass % unless otherwise specified.

[Examples 1 to 6 and Comparative Examples 1 to 5]
The skin cosmetics of Examples and Comparative Examples were prepared by adding each of the components in Tables 1 and 2 to purified water, mixing them uniformly, and mixing them uniformly. The compositions of the common components in Tables 1 and 2 are shown in Table 3.
The raw materials used in preparing the skin cosmetics of the Examples and Comparative Examples are as follows.

Component (A)
Loquat leaf extract: Composition (loquat leaf extract 0.8%, 1,3-butylene glycol 49.6%, water 49.6%)
Component (A')
Bilberry leaf extract: Composition (bilberry leaf extract 0.2%, 1,3-butylene glycol 49.9%, water 49.9%)

Ingredient (B)
Sodium hyaluronate: Composition (1% aqueous solution of sodium hyaluronate)

Ingredient (C)
Glycerin: "RG-S" (manufactured by NOF Corporation). Composition: 100% glycerin.
Pentylene glycol: "Diol PD" (manufactured by Kokyu Alcohol Kogyo Co., Ltd.) Composition: 100% pentylene glycol
1,3-Butylene glycol: "1,3-butylene glycol-P" (manufactured by KH Neochem Co., Ltd.) Composition: 1,3-butylene glycol 100%

Ingredient (D)
2-methacryloyloxyethyl phosphorylcholine-butyl methacrylate copolymer liquid: "LIPIDURE (registered trademark) -PMB (Ph10)" (manufactured by NOF Corporation). The weight average molecular weight of the copolymer was approximately 600,000, and the ratio (molar ratio) of the content of structural units based on ² -methacryloyloxyethyl phosphorylcholine (R1 in formula (I) is a methyl group) to the content of structural units based on butyl methacrylate ( ^R2 in formula (II) is a methyl group, and ^R3 is an alkyl group having 4 carbon atoms) was 4:1.

<Evaluation method>
The panel consisted of 20 women in their 30s to 60s, and they underwent a sensory evaluation of the following five items: "moisturizing sensation,""non-stickiness,""smoothness,""effect durability when wearing a mask," and "effect durability when used as a wipe-off cosmetic."

(1) Moisturizing Feeling After washing the face, 1 g of each skin cosmetic preparation of the Examples and Comparative Examples was applied to the entire face, and the moisturizing feeling after 1 hour was scored according to the following evaluation criteria. The total score of the evaluation points of the 20 panelists was calculated and evaluated according to the following criteria.
<Evaluation criteria>
2 points: It feels so soft and chewy that it sticks to your skin.
1 point: There is a slight feeling of firmness, as if the hand is sticking to the skin.
0 points: There is no feeling of firmness that makes the hands stick to the skin.
<Judgment criteria>
◎: Total score is 35 points or more. 〇: Total score is 30 points or more, 34 points or less. △: Total score is 29 points or less.

(2) Non-stickiness After washing the face, 1 g of each skin cosmetic preparation of the Examples and Comparative Examples was applied to the entire face, and the non-stickiness after 1 hour was scored according to the following evaluation criteria. The total score of the evaluation points of the 20 panelists was calculated and evaluated according to the following criteria.
<Evaluation criteria>
2 points: No stickiness felt.
1 point: Not very sticky.
0 points: Very sticky feeling.
<Judgment criteria>
◎: Total score is 35 points or more. 〇: Total score is 30 points or more, 34 points or less. △: Total score is 29 points or less.

(3) Smooth Feeling After washing the face, 1 g of each skin cosmetic preparation of the Examples and Comparative Examples was applied to the entire face, and the smooth feeling after 1 hour was scored according to the following evaluation criteria. The total score of the evaluation points of the 20 panelists was calculated and evaluated according to the following criteria.
<Evaluation criteria>
2 points: Smooth feeling is felt.
1 point: Slightly smooth feeling.
0 points: No smooth feeling.
<Judgment criteria>
◎: Total score is 35 points or more. 〇: Total score is 30 points or more, 34 points or less. △: Total score is 29 points or less.

(4) Durability of effect when wearing a mask After washing the face, 1 g of each skin cosmetic of the Examples and Comparative Examples was applied to the entire face, and after wearing the mask for 1 hour, the moisturizing feeling, non-stickiness, and smooth feeling were scored according to the following evaluation criteria. The total score of the evaluation points of 20 panelists was calculated and evaluated according to the following criteria.
<Evaluation criteria>
2 points: The effect is felt to be long-lasting.
1 point: The effect seems to be somewhat persistent.
0 points: The effect is not felt to be sustainable.
<Judgment criteria>
◎: Total score is 35 points or more. 〇: Total score is 30 points or more, 34 points or less. △: Total score is 29 points or less.

(5) Durability of effect when used as a wipe-off cosmetic Instead of washing the face, 1 g of each skin cosmetic of the Examples and Comparative Examples was soaked into a cotton pad and used to wipe the entire face. After wearing the mask for 1 hour, the moisturizing feeling, non-stickiness, and smooth feeling were scored according to the following evaluation criteria. The total score of the evaluation points of 20 panelists was calculated and evaluated according to the following criteria.
<Evaluation criteria>
2 points: The effect is felt to be long-lasting.
1 point: The effect seems to be somewhat persistent.
0 points: The effect is not felt to be sustainable.
<Judgment criteria>
◎: Total score is 35 points or more. 〇: Total score is 30 points or more, 34 points or less. △: Total score is 29 points or less.

The content of ingredient (A) is indicated by the amount blended in the product. The number in parentheses indicates the amount of extract or extractive substance contained in the product.
The content of ingredient (B) is indicated by the amount blended in the product. The number in parentheses indicates the amount of active ingredient contained in the product.
The content of component (C) is indicated by the amount of the active ingredient contained in the product.
The content of component (D) is shown as the blend amount in the product. The number in parentheses is the amount of copolymer in solid content contained in the product.

The evaluation results of the Examples are shown in Table 1, and the evaluation results of the Comparative Examples are shown in Table 2. In each evaluation item, a sample judged as "A" or "B" was deemed to have passed.
As shown in Table 1, all of the skin cosmetics of Examples 1 to 6 had excellent moisturizing effects, were less sticky, and were able to impart a smooth feeling, and these effects persisted even when wearing a mask. Furthermore, similar effects were obtained when used as a wipe-off cosmetic. In particular, the skin cosmetic of Example 1, which contained the preferred amounts of components (A) to (D), was rated as "Excellent" in all evaluation items.

In contrast, as shown in Table 2, none of the skin cosmetics of Comparative Examples 1 to 5 were rated as passing in all the evaluation items.
That is, the skin cosmetic of Comparative Example 1, which did not contain component (A), was evaluated as having insufficient effect duration when wearing a mask and insufficient effect when used as a wipe-off cosmetic.
The skin cosmetic of Comparative Example 2, which did not contain component (B), was evaluated as having insufficient effect duration when wearing a mask and insufficient effect when used as a wipe-off cosmetic.
The skin cosmetic of Comparative Example 3, which did not contain component (C), was evaluated as having insufficient moisturizing feeling and effects when used as a wipe-off cosmetic.
The skin cosmetic of Comparative Example 4, which did not contain component (D), was evaluated as being insufficient in terms of lack of stickiness, smoothness, and effectiveness when used as a wipe-off cosmetic.
The skin cosmetic of Comparative Example 5, in which component (A) was replaced with bilberry leaf extract, was evaluated as having insufficient effect duration when wearing a mask and insufficient effect when used as a wipe-off cosmetic.

Next, formulation examples of skin cosmetics of the present invention are shown. The formulation examples below also have excellent moisturizing effects, are less sticky, and impart a smooth feeling. These effects are maintained even when wearing a mask, and similar effects were also obtained when used as a wipe-off cosmetic. Note that the amount of extract blended in the formulation examples below is the amount of extracted extract blended, and the amount of polymer blended is the amount of solids blended.

[Formulation example] Gel-type skin cosmetic (mass%)
1,3-butylene glycol: 6.5
Glycerin: 6
Pentylene glycol: 2
Propylene glycol: 0.2
Polyethylene glycol: 1
2-methacryloyloxyethyl phosphorylcholine/butyl methacrylate copolymer solution: 0.05
Dimethicone: 3
Carbomer: 0.5
Polysorbate 80: 0.4
PEG-60 hydrogenated castor oil: 0.4
Macadamia seed oil: 0.3
Dimethicone crosspolymer: 0.1
Squalane: 0.1
EDTA-4Na: 0.03
Sodium hyaluronate: 0.01
Shiikuwasha peel extract: 0.004
Apple fruit extract: 0.002
Loquat leaf extract: 0.002
Centella asiatica extract: 0.002
Grape fruit extract: 0.001
(Hydroxyethyl acrylate/Sodium acryloyldimethyltaurate) copolymer: 0.15
Potassium hydroxide: 0.1
Methylgluceth-10: 0.5
Ethylhexylglycerin: 0.2
Phenoxyethanol: 0.4
Fragrance: appropriate amount Water: remaining amount

[Formulation example] Emulsion-type skin cosmetic (mass%)
1,3-butylene glycol: 0.2
Glycerin: 3.5
Pentylene glycol: 2
Propanediol: 2
Dimethicone: 2
Cetyl ethylhexanoate: 2
Sunflower seed oil: 2
Polyethylene glycol: 2
Triethylhexanoin: 2
Glyceryl stearate: 1
2-methacryloyloxyethyl phosphorylcholine/butyl methacrylate copolymer solution: 0.015
Grape fruit extract: 0.001
Apple fruit extract: 0.001
Shiikuwasha peel extract: 0.001
Loquat leaf extract: 0.001
Centella asiatica extract: 0.001
Sodium hyaluronate: 0.005
Allantoin: 0.1
Glycosyltrehalose: 0.2
Hydrogenated starch hydrolysate: 0.1
Behenyl alcohol: 0.6
Dimethicone crosspolymer: 0.05
PEG-75 stearate: 0.5
Polysorbate 80: 0.5
Carbomer: 0.2
Tocopherol: 0.05
EDTA-4Na: 0.025
Ethylhexylglycerin: 0.1
Phenoxyethanol: 0.4
Fragrance: appropriate amount Water: remaining amount

The skin cosmetic of the present invention has excellent moisturizing effects, is less sticky, and can impart a smooth feeling. These effects are maintained even when wearing a mask, and similar effects can be obtained when used as a wipe-off cosmetic, so it is preferable to apply it to skin, especially facial skin.

Claims (1)

A skin cosmetic composition containing the following components (A), (B), (C) and (D):
(A) Extract obtained from loquat leaves: 0.0001 to 0.03 mass%
(B) Acidic mucopolysaccharides: 0.0001 to 0.05% by mass
(C) Dihydric to tetrahydric polyalcohols having 3 to 6 carbon atoms: 1 to 30% by mass
(D) A copolymer containing structural units represented by the following formulas (I) and (II): 0.0005 to 0.5% by mass
(wherein ^R1 represents a methyl group.)
(In the formula, ^R2 represents a methyl group, and ^R3 represents an alkyl group having 4 carbon atoms.)