Sheet-like cleansing cosmetic

Abstract

To provide a sheet-like cleansing cosmetic having superior cleansing efficacy, easy and quick usability, and a non-sticky use feeling during and after use.CONSTITUTION: Provided is a sheet-like cleansing cosmetic comprising: (A) 0.1 mass% to 3 mass% of fatty acid polyglyceryl; (B) 0.1 mass% to 1 mass% of fatty acid polyglyceryl ether; (C) 20 mass% to 40 mass% of polyhydric alcohol; and (D) water. The cosmetic is impregnated into a nonwoven fabric made of polyester, having a single fiber diameter of 700 nm or less and a basis weight of 30-70 g / m2.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a sheet-type cleansing cosmetic which can easily and quickly remove sebum stains and makeup stains, and which is non-sticky during and after use and has an excellent feel when used. [Background technology]

[0002] Conventionally, in the case of cleansing agents, various oils, surfactants, etc. have been appropriately selected and combined in consideration of usability, cleansing power, water washability, etc. according to the purpose and use, and product development that meets the required quality has been studied. Examples include aqueous liquid types such as cleansing lotions, emulsion types such as milky lotions and creams (W / O type, O / W type), and oil types such as oil cleansing. Among them, various oils, powders, and resins have been used in recent years, and cleansing cosmetics based on oil-based base materials such as cream types and oil types that take cleansing power into consideration have become popular. However, these are sticky during and after use, so they feel strange to the touch when simply wiped off, and it is necessary to wash them off with a detergent or the like.

[0003] Therefore, in Patent Document 1, in a wipe-off type aqueous cleansing cosmetic, the content of (A) polyoxyethylene fatty acid glyceryl such as polyoxyethylene (caprylic / capric / coconut fatty acid) glyceryl is adjusted to 3 to 10 mass %, and the content of (B) amphoteric surfactant such as lauryl betaine is adjusted to 0.005 to 2 mass %. Preferably, (C) polyhydric alcohol such as propylene glycol is further blended at a ratio of 1 to 12 mass %. A portable wipe-off cosmetic sheet is disclosed by impregnating a substrate with this cleansing cosmetic.

[0004] Patent Document 2 discloses a cleansing sheet comprising a sheet substrate and a cleansing emulsion composition impregnated into the sheet substrate, the cleansing emulsion composition containing a nonionic surfactant, an acrylic acid / alkyl methacrylate copolymer, and an oil, the nonionic surfactant being at least one selected from the group consisting of polyoxyethylene glyceryl diisostearate, polyoxyethylene glyceryl monoisostearate, and polyoxyethylene hydrogenated castor oil, and the viscosity of the cleansing emulsion composition at 25°C being 1000 mPa s or less.

[0005] As wipe-off cleansing cosmetics, none of these have been satisfactory because they are water-based and therefore lack sufficient cleansing effect. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2014-201561 A [Patent Document 2] Retable 2015 / 111249 Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention has been made in consideration of the above circumstances, and has an object to provide a sheet-type cleansing cosmetic that has a good cleansing effect, is easy and rapid to use, and has a non-sticky feel during and after use. [Means for solving the problem]

[0008] Under such circumstances, the present inventors have conducted intensive research to solve the above problems, and as a result, have discovered the following components (A) to (D): (A) 0.1 to 3 mass% of fatty acid polyglyceryl, (B) 0.1 to 1 mass% of polyglyceryl alkyl ether, (C) 20 to 50 mass% of a polyhydric alcohol, (D)Water and an aqueous composition in which dipropylene glycol is 30% by mass or more of the polyhydric alcohol in the component (C), The inventors have discovered that a sheet-type cleansing material impregnated into a nonwoven fabric made of polyester fibers with a single fiber diameter of 700 nm or less and a basis weight of 30 to 70 g / m2 has excellent cleansing effects, usability, and feel when used, which has led to the completion of the present invention.

[0009] That is, the present invention relates to the following components (A) to (D): (A) 0.1 to 3 mass% of fatty acid polyglyceryl, (B) 0.1 to 1 mass% of polyglyceryl alkyl ether, (C) 20 to 50 mass% of a polyhydric alcohol, (D)Water and (C) an aqueous composition in which dipropylene glycol accounts for 30% by mass or more of the polyhydric alcohol. The sheet-type cleansing cosmetic is impregnated into a nonwoven fabric made of polyester fibers with a single fiber diameter of 700 nm or less and a basis weight of 30 to 70 g / m2. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] The present invention will be described in detail below. The fatty acid polyglyceryl of component (A) used in the present invention is a surfactant necessary for forming the cleansing composition of the present invention, and at the same time, has excellent adsorption and dispersibility to pigments and body powders contained in makeup compositions such as foundations and eye shadows, and also has excellent compatibility with components to be cleaned such as oils, and is therefore contained for the purpose of improving the cleansing effect.

[0011] The fatty acid polyglyceryl of component (A) used in the present invention is not particularly limited as long as it is one that is commonly used in ordinary cosmetics, but polyglycerol fatty acid esters having an HLB of 8 to 17 are preferred. More preferably, the HLB is 10 to 15. The degree of polymerization of this polyglyceryl group is preferably 4 to 20. More preferably, polyglyceryl-6 caprylate and polyglyceryl-6 dicaprate are used. Commercially available products include the former, Sansoft Q-8H-C (HLB 14.6), and the latter, Sansoft Q-102H-C (HLB 10.2) (all manufactured by Taiyo Kagaku).

[0012] The content of fatty acid polyglyceryl is preferably from 0.1 to 3 mass %, and more preferably from 0.3 to 1 mass %.

[0013] If the content is less than 0.1%, the cleaning ability decreases and a satisfactory cleansing effect cannot be obtained, whereas if the content exceeds 3%, the composition feels sticky to the touch, which is undesirable.

[0014] The polyglyceryl alkyl ether, component (B) used in the present invention, is a surfactant necessary for forming the cleansing composition of the present invention, and at the same time, has excellent adsorption and dispersibility to pigments and body powders contained in makeup compositions such as foundations and eye shadows, and also has excellent compatibility with ingredients to be cleaned, such as oils, and is therefore contained for the purpose of improving the cleansing effect. The polyglyceryl alkyl ether of component (B) used in the present invention is not particularly limited as long as it is one that is generally used in cosmetics, but the HLB value is preferably 8 to 15. More preferably, it is 10 to 13. For example, polyglycerol monolauryl ether, polyglycerol monomyristyl ether, polyglycerol monopalmityl ether, polyglycerol monostearyl ether, polyglycerol monoisostearyl ether, polyglycerol monooleyl ether, etc. can be used, and preferably polyglyceryl-4 lauryl ether can be used. An example of a commercially available product is Sunether L-4 (HLB 12.3, manufactured by Taiyo Kagaku).

[0015] The content of the polyglyceryl alkyl ether is preferably from 0.1 to 1% by mass, and more preferably from 0.2 to 0.5% by mass.

[0016] If the content is less than 0.1%, the cleaning ability is reduced and a satisfactory cleansing effect cannot be obtained, whereas if the content exceeds 1%, the composition feels sticky to the touch, which is undesirable.

[0017] The polyhydric alcohol of component (C) used in the present invention is not particularly limited as long as it is one that is normally used in cosmetics, but specific examples include glycols such as ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, isoprene glycol, 1,3-propanediol, 1,3-butylene glycol, 1,2-butanediol, 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol, and 1,2-decanediol; glycerols such as glycerin, concentrated glycerin, diglycerin, and polyglycerin; and the like. These components may be used alone or in appropriate combination of two or more. Among them, the use of dipropylene glycol can produce a cleansing cosmetic that leads to enhanced cleansing power.

[0018] The content of the component (C) used in the present invention is preferably 20 to 50% by mass, and more preferably 25 to 40% by mass. If it is less than 20% by mass, the cleansing power tends to be insufficient, and if it exceeds 50% by mass, it will feel sticky.

[0019] Furthermore, when dipropylene glycol is set to 30% by mass or more in the polyhydric alcohol in component (C), the cleansing power is further increased and the sticky feeling can be reduced. When it is 50% by mass or more, the effect is further enhanced.

[0020] The nonwoven fabric used in the present invention is made of polyester and is made of fibers with a single fiber diameter of 700 nm or less. The weight per unit area is 30 to 70 g / m2. Nanofront (manufactured by Teijin Frontier Co., Ltd.) is a commercially available product.

[0021] The amount of impregnation with the impregnation liquid is not particularly limited, but the ratio of impregnation liquid / nonwoven fabric is preferably 2 to 6, and more preferably 3 to 5. For example, when the weight of the nonwoven fabric (200 mm x 150 mm) is 1.5 g, the amount of impregnation is 3 g to 9 g, and preferably 4.5 g to 7.5 g. If the ratio of impregnation liquid to nonwoven fabric is less than 2, the sheet may not be entirely impregnated, and if it is more than 6, the liquid may drip, making it difficult to use.

[0022] The sheet-type cleansing cosmetic of the present invention can exhibit a sufficient cleansing effect even if it does not substantially contain any oil other than oil-soluble stabilizers such as vitamin E and fragrances.

[0023] The cleansing cosmetic of the present invention can contain a hydrophilic thickener. There are no particular limitations on the thickener as long as it is used in cosmetics or quasi-drugs. For example, natural water-soluble polymers, semi-synthetic water-soluble polymers, synthetic water-soluble polymers, etc. can be used.

[0024] Examples of natural water-soluble polymers that can be used include plant-derived polymers such as gum arabic, tragacanth gum, guar gum, carrageenan, agar, quince seed, brown algae extract, tuberose polysaccharide, Aphanothece sacrum polysaccharide, and Tremella fuciformis polysaccharide; microbial-derived polymers such as xanthan gum, dextran, and Alcaligenes-produced polysaccharide; and animal-derived polymers such as collagen.

[0025] Examples of semi-synthetic water-soluble polymers that can be used include starch-based polymers such as carboxymethyl starch and hydroxypropyl starch, cellulose-based polymers such as methyl cellulose, hydroxyethyl cellulose, sodium cellulose sulfate, hydroxypropyl cellulose and carboxymethyl cellulose (CMC), and alginic acid-based polymers such as sodium alginate and propylene glycol alginate.

[0026] Examples of the synthetic water-soluble polymer that can be used include vinyl polymers such as polyvinyl alcohol, polyvinyl methyl ether, polyvinylpyrrolidone, and carbomer; polyoxyethylene polymers such as polyethylene glycol; polyoxyethylene-polyoxypropylene copolymer polymers; acrylic polymers such as sodium polyacrylate; polyethyleneimine; and cationic polymers.

[0027] The cleansing cosmetic composition of the present invention can contain a surfactant. Specifically, the surfactant may be an anionic surfactant, a cationic surfactant, an amphoteric surfactant, a nonionic surfactant, or the like, which are commonly used in cosmetics or quasi-drugs.

[0028] The cleansing cosmetic of the present invention can contain a chelating agent. Examples of the chelating agent that can be used in the cleansing cosmetic of the present invention include polyphenols (e.g., gallic acid, tannic acid, caffeic acid, etc.), hinokitiol and its salts, aminocarboxylic acids (ethylenediaminetetraacetic acid, glycoletherdiaminetetraacetic acid, diethylenetriaminepentaacetic acid, ethylenediaminedisuccinic acid, etc.) and their salts, hydroxycarboxylic acids (malic acid, citric acid, tartaric acid, etc.) and their salts, phytic acid and its salts, and etidronic acid and its salts.

[0029] In the cleansing cosmetic of the present invention, a moisturizing agent can be further used to keep the skin moist. The moisturizing agent is not particularly limited as long as it is used in cosmetics or quasi-drugs. Representative moisturizing agents include polyhydric alcohols and polyethers such as glycerin, 1,3-butylene glycol, polyethylene glycol, propylene glycol, and diglycerin (ethylene oxide) (propylene oxide) adducts, plant extracts, sugars such as xylitol, sorbitol, and glycosyl trehalose, and amino acids.

[0030] In addition, biologically derived polymeric compounds such as hyaluronic acid, mucin, chondroitin sulfate, and soluble collagen, and salts thereof, or either one of them, can be used.

[0031] In the cleansing cosmetic composition of the present invention, an oil may be used, and there are no particular limitations on the oil as long as it is used in cosmetics or quasi-drugs.

[0032] Specifically, for example, non-polar oils such as hydrocarbon oils and silicone oils, low polarity oils such as monoester oils, high polarity oils such as triglyceride oils, higher alcohols, biologically derived oils, and the like can be used.

[0033] In addition to the above, the sheet-type cleansing cosmetic of the present invention can contain ingredients that are normally used in cosmetics or quasi-drugs, depending on the application and purpose, as long as the effects of the present invention are not impaired. For example, various medicinal ingredients, ultraviolet absorbers, ultraviolet scattering agents, powders, antioxidants, preservatives, fragrances, colorants, cooling agents, vitamins, neutralizing agents, pH adjusters, purified water, aromatic perfumes, hot spring water, deep sea water, etc. can be mentioned, but are not limited to these. EXAMPLES

[0034] The present invention will be described in more detail below with reference to specific examples, but the present invention is not limited to the following examples. In addition, the blending amounts in the following examples and comparative examples are expressed in mass % unless otherwise specified.

[0035] <Method of manufacturing sheet-type cleansing cosmetic product> Each component was used in the blending ratio shown in Table 1 below, mixed and dissolved uniformly, and impregnated into various nonwoven fabric sheets to prepare each sheet-type cleansing cosmetic composition.

[0036] TIFF2025065944000001.tif108110

[0037] <Cleansing power test> A cream foundation was applied evenly to the artificial leather, and after sufficient drying, it was wiped off several times with a sheet-type cleansing cosmetic composition, and the degree to which the foundation had been removed was observed under a digital microscope and evaluated. <Evaluation> A: Over 90% of the foundation was removed. B: More than 50% but less than 90% of the foundation was removed. C: Less than 50% of the foundation was removed.

[0038] (Method for evaluating skin feel when wiping) Ten expert panelists performed a sensory evaluation of the feel of each sheet-type cleansing material when wiping the face. [Evaluation Criteria] ◎: More than 9 out of 10 people evaluated that the sheet felt good on the skin, did not slip, and wiped well. ○: 7 to 8 out of 10 people rated the sheet as having a good feel on the skin, wiping thoroughly without slipping. △: 5 to 6 out of 10 people evaluated that the sheet felt good on the skin, did not slip, and wiped well. ×: Four or less out of 10 people evaluated that the sheet felt good on the skin, did not slip, and wiped thoroughly.

[0039] (Method for evaluating skin feel after use) Ten expert panelists wiped their faces with each sheet-type cleansing material and then performed a sensory evaluation of the feel on the skin. [Evaluation Criteria] ◎: More than 9 out of 10 people rated it as non-sticky and refreshing. ◯: 7 to 8 out of 10 people rated it as non-sticky and refreshing. △: 5 to 6 out of 10 people rated it as not sticky and refreshing. ×: Less than 4 out of 10 people rated it as non-sticky and refreshing.

[0040] Experimental Example 1 Each nonwoven fabric sheet, which was folded in four and had a size of 200 mm x 150 mm, was impregnated with 6 g of the impregnation solution prepared in Table 1. The nonwoven fabric used in Example 1 had a single fiber diameter of 700 nm or less.

[0041] <Result> As shown in Table 2, the sheet-type cleansing cosmetic using the nonwoven fabric of the present invention (Example 1) had significantly different cleansing power and usability compared to the sheet-type cleansing cosmetic using a nonwoven fabric other than the present invention (Comparative Examples 1 and 2). Also, the impregnating liquid alone (Comparative Example 3) had almost no good cleansing power or skin feel.

[0042] [Table 2]

[0043] Experimental Example 2 An impregnation solution having the formulation shown in Table 3 was prepared, and 6 g of the impregnation solution was impregnated into the nonwoven fabric sheet used in Example 1, which was folded in four and had a size of 200 mm x 150 mm, and evaluation was performed.

[0044] [Table 3]

[0045] <Result> Examples 1 to 7 of the present invention showed good results. On the other hand, Comparative Examples 4 to 7, in which the content of component (A) or component (B) was outside the range of 0.1 to 3% by mass, were unsatisfactory in terms of cleansing power and feeling of use. In addition, Comparative Examples 8 and 9, in which the content of component (C) was outside the range of 20 to 50% by mass and the DPG / polyhydric alcohol ratio was 30% by mass or less, were both unsatisfactory in terms of cleansing power and feeling of use.

[0046] Experimental Example 3 An impregnation solution was prepared using the fatty acid polyglyceryl, which is component (A) of the present invention, and the fatty acid polyglyceryl ether, which is component (B), along with another surfactant having a similar HLB. The nonwoven fabric sheet used in Example 1, which was folded in four and had a size of 200 mm x 150 mm, was impregnated with 6 g of the impregnation solution and evaluated.

[0047] [Table 4]

[0048] <Result> The sheet-type cleansing cosmetic prepared by replacing the fatty acid polyglyceryl, component (A) of the present invention with another surfactant (Comparative Example 10), and the sheet-type cleansing cosmetic prepared by replacing the fatty acid polyglyceryl ether, component (B) of the present invention with another surfactant (Comparative Example 11) were unsatisfactory in terms of cleansing power and usability.

[0049] Example 8 A nonwoven fabric made of polyester with a single fiber diameter of 700 nm or less and a basis weight of approximately 50 g / m2 is impregnated with three times its own weight of impregnation liquid B. Non-woven fabric (100mm x 75mm, 0.8g) Impregnation solution (Formulation) (% by mass) Polyglyceryl-6 Caprate 0.1 Polyglyceryl-6 Dicaprate 1.0 Polyglyceryl-4 Lauryl Ether 0.3 Dipropylene glycol 8 Glycerin 5 1,3-BG 5 Diglycerin 5 Lactic acid 0.02 Sodium lactate solution (50%) 0.08 Sodium hexametaphosphate 0.03 Preservatives (appropriate amount) Ion exchange water Residual

[0050] The sheet-type cleansing cosmetic of this example had a good cleansing effect, was easy and quick to use, and was excellent in terms of non-sticky feel during and after use.

[0051] Example 9 A nonwoven fabric made of polyester with a single fiber diameter of 700 nm or less and a basis weight of approximately 50 g / m2 is impregnated with four times its own weight of impregnation liquid B. Non-woven fabric (200mm x 150mm, 1.5g) Impregnation solution (Formulation) (% by mass) Polyglyceryl-10 diisostearate *10 1.2 Polyglyceryl-4 Lauryl Ether 0.5 Dipropylene glycol 15 Glycerin 7 1,3-BG 5 Diglycerin 5 Pentylene glycol 2.5 Citric acid 0.01 Sodium citrate 0.02 EDTA2Na 0.03 Ion exchange water Residual *10 NIKKOL Decaglyn 2-ISV

[0052] The sheet-type cleansing cosmetic of this example had a good cleansing effect, was easy and quick to use, and was excellent in terms of non-sticky feel during and after use. [Industrial Applicability]

[0053] According to the present invention, it is possible to provide a sheet-type cleansing cosmetic which has a good cleansing effect, is easy and quick to use, and has a non-sticky feel during and after use.

Claims

1. Contains the following components (A) to (D): (A) 0.1 to 3 mass% of fatty acid polyglyceryl, (B) 0.1 to 3 mass% of polyglyceryl alkyl ether, (C) 20 to 50% by mass of polyhydric alcohol (D) Water and (C) an aqueous composition in which dipropylene glycol accounts for 30 mass% or more of the polyhydric alcohol, The sheet-like cleansing material is impregnated into a nonwoven fabric made of polyester fibers having a single fiber diameter of 700 nm or less and a basis weight of 30 to 70 g / m2.

2. (A) 0.3 to 1 mass% of fatty acid polyglyceryl, (B) 0.2 to 1% by mass of polyglyceryl alkyl ether, (C) 25 to 40% by mass of a polyhydric alcohol, 2. The sheet-form cleansing cosmetic preparation according to claim 1, wherein in component (C), dipropylene glycol accounts for 50% by mass or more of the polyhydric alcohol.

3. (A) Component is polyglyceryl-6 caprate or polyglyceryl-6 dicaprate 3. The sheet-form cleansing cosmetic preparation according to claim 1, wherein the component (B) is polyglyceryl-4 lauryl ether.

4. 4. The sheet-like cleansing cosmetic according to claim 1, wherein the nonwoven fabric has a basis weight of 40 to 60 g / m2.

5. 5. The sheet-like cleansing cosmetic preparation according to claim 1, wherein the mass ratio of the impregnation liquid to the nonwoven fabric is 2 to 6.

6. 5. The sheet-form cleansing cosmetic according to claim 1, which is substantially free of oil.

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