JP7491767B2 - Skin cleansing composition - Google Patents

Description

The present invention relates to a skin cleansing composition.

Sebum on the skin, sunscreen cosmetics, and makeup cosmetics are lipophilic substances, so oily skin cleansing compositions for removing these are known in the prior art. For example, Patent Document 1 describes an oily skin cleansing composition that contains a diester of dimer acid, a specific surfactant, ethanol, a volatile silicone, and a specific ester oil.

JP 2018-35104 A

However, conventional oil-based skin cleansers have low affinity with water, which means they feel very oily during use and there is room for improvement in terms of how easily they can be washed off after use. There is also room for further improvement in terms of their ability to remove dirt.

The present invention has been made in consideration of the above problems, and its objective is to provide a skin cleansing composition that is excellent in feel when used, easy to wash off after use, and also has excellent dirt removing power.

In order to solve the above problems, the present inventors conducted extensive research and discovered that a skin cleansing composition using specific amounts of polyethylene glycol, ester oil, and surfactants provides excellent usability, washability after use, and dirt removal power.

That is, the present invention includes the following configurations.
<1> A skin cleanser composition containing the following Components A to C, in which the content of Component A is 20.0 to 50.0% by mass, the content of Component B is 2.0 to 30.0% by mass, and the content of Component C is 1.0 to 10.0% by mass:
Component A: polyethylene glycol; Component B: ester oil having an IOB value of 0.1 to 0.6; Component C: nonionic surfactant having an HLB value of 19.3 or less; <2> The skin cleanser composition according to <1>, in which the component A contains 50.0% by mass or more of the following component A1:
Component A1: Polyethylene glycol having a number average molecular weight of 200 to 3,000.
<3> The skin cleansing composition according to <1> or <2>, wherein the water content is 5.0 mass% or less, or the skin cleansing composition does not contain water.

The present invention provides a skin cleansing composition that is excellent in feel when used and washes off easily after use, and also has excellent dirt removing power.

The present invention is described below, but is not limited thereto. The present invention is not limited to the configurations described below, and various modifications are possible within the scope of the claims. In addition, embodiments or examples obtained by appropriately combining the technical means disclosed in different embodiments or examples are also included in the technical scope of the present invention. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment. All academic and patent documents described in this specification are incorporated herein by reference.

Unless otherwise specified in this specification, "X to Y" indicating a numerical range means "X or more and Y or less." In addition, unless otherwise specified in this specification, the mass % indicating the content of a component is the value when the mass of the entire skin cleansing composition is 100.0 mass %.

1. Skin cleansing composition
The skin cleansing composition according to the present invention contains the following components A, B, and C, in which the content of component A is 20.0 to 50.0% by mass, the content of component B is 2.0 to 30.0% by mass, and the content of component C is 1.0 to 10.0% by mass;
Component A: polyethylene glycol Component B: ester oil having an IOB value of 0.1 or more and less than 0.6 Component C: nonionic surfactant having an HLB value of 19.3 or less The skin cleanser composition contains component A at a predetermined content, and thus has excellent affinity with water, feeling of use, and washability after use. In this specification, "excellent affinity with water" means that the skin cleanser composition is easily mixed with water. In this specification, "excellent feeling of use" means that the skin cleanser composition shows good spread when applied to the skin. In this specification, "excellent washability after use" means that the skin cleanser composition attached to the skin is easily washed off with water or the like. Component A can also be used for the purpose of adjusting the viscosity of the skin cleanser composition.

By containing components A and B, the skin cleanser composition can blend with dirt on the skin, resulting in excellent dirt removal power.

By including component C in the skin cleansing composition, the stickiness and oily feeling caused by the oily components after use can be reduced. In other words, after using the skin cleansing composition of the present invention, a good finish without stickiness can be obtained.

<Component A>
The skin cleanser composition contains polyethylene glycol as component A. The content of component A is 20.0 to 50.0% by mass, and preferably 25.0 to 45.0% by mass.

When the content of component A is 20.0% by mass or more, the skin cleanser composition has good affinity with water, improving the feel when used, the washability, and the dirt removal power. When the content of component A is 50.0% by mass or less, the stability of the skin cleanser composition is improved.

Component A preferably contains, as component A1, a polyethylene glycol having a number average molecular weight of 200 to 3000. The content of component A1 in component A is preferably 50.0% by mass or more, more preferably 75.0% by mass or more. If the content of component A1 is 50.0% by mass or more, the feel of use, washability, and dirt removal power of the skin cleanser composition are further improved, and the skin cleanser composition is easily adjusted to the desired viscosity. There is no particular upper limit to the content of component A1 in component A, and it may be 100.0% by mass. Component A may also contain, as component A2, a polyethylene glycol having a number average molecular weight of more than 3000 for the purpose of adjusting the viscosity.

The number average molecular weight of component A1 is preferably 3000 or less, more preferably 2500 or less, and even more preferably 2000 or less. When the number average molecular weight of component A is 3000 or less, the feeling of use, washability, and dirt removal power are improved. The number average molecular weight of component A is preferably 200 or more, and more preferably 500 or more.

For component A, only polyethylene glycols of the same molecular weight may be used, or polyethylene glycols of multiple molecular weights may be mixed.

<Component B>
The above skin cleanser composition contains an ester oil as component B. The content of component B is 2.0 to 30.0% by mass, preferably 5.0 to 25.0% by mass, and more preferably 8.0 to 20.0% by mass.

When the content of component B is 2.0% by mass or more, the dirt removal power is improved. When the content of component B is 30.0% by mass or less, the feel of the skin cleanser composition when used and the washability after use of the skin cleanser composition are improved.

The IOB value of component B is 0.1 or more and less than 0.6, preferably 0.1 to 0.5. If the IOB value of component B is 0.1 or more, the feeling of use of the skin cleanser composition is improved, and if it is less than 0.6, the dirt removal power when using the skin cleanser composition is improved.

Here, the IOB (Inorganic-Organic Balance) value is
It is a value expressed by the formula IOB = Σ inorganic value / Σ organic value. The IOB value is a numerical value that can be calculated by integrating the "inorganic value" and "organic value" of the atoms and functional groups that compose an organic compound such as a surfactant, based on the "inorganic value" and "organic value" set for each type of atom and functional group (see "Organic Conceptual Diagram - Basics and Applications" by Yoshio Koda, pp. 11-17, Sankyo Publishing, 1984).

The viscosity of component B at 20°C is preferably 3 to 10,000 mPa·s, more preferably 5 to 8,000 mPa·s. If the viscosity of component B is 3 mPa·s or more, the skin cleanser composition will have a good feel when in use, particularly good compatibility during use. If the viscosity is 10,000 mPa·s or less, the skin cleanser composition will have improved feel when in use and spreadability.

Examples of component B include, but are not limited to, isopropyl myristate (IOB=0.18), isodecyl isononanoate (IOB=0.19), octyldodecyl neopentanoate (IOB=0.13), isostearyl neopentanoate (IOB=0.14), isopropyl palmitate (IOB=0.16), hexyl laurate (IOB=0.17), hexyldecyl ethylhexanoate (IOB=0.13), isotridecyl isononanoate (IOB=0.16), isopropyl isostearate (IOB=0.16), and hexyl laurate (IOB=0.17). .15), ethyl isostearate (IOB = 0.15), ethylhexyl palmitate (IOB = 0.13), octyldodecyl neodecanoate (IOB = 0.11), polyglyceryl-2 tetraisostearate (IOB = 0.17), pentaerythrityl tetraisostearate (IOB = 0.15), isocetyl myristate (IOB = 0.10), trimethylolpropane triisostearate (IOB = 0.16), neopentyl glycol diethylhexanoate (IOB = 0.17 ... IOB=0.32), trimethylolpropane triethylhexanoate (IOB=0.33), pentaerythrityl tetraethylhexanoate (IOB=0.35), diisopropyl adipate (IOB=0.46), diisostearyl malate (IOB=0.28), neopentyl glycol dicaprate (IOB=0.25), tripropylene glycol dineopentanoate (IOB=0.52), isodecyl benzoate (IOB=0.23), propylene glycol dicaprylate Examples include cholesteryl (IOB = 0.32), isononyl isononanoate (IOB = 0.2), ethylhexyl isononanoate (IOB = 0.2), isodecyl neopentanoate (IOB = 0.22), ethylhexyl ethylhexanoate (IOB = 0.2), cetyl ethylhexanoate (IOB = 0.13), glyceryl tri-2-ethylhexanoate (IOB = 0.36), diethylhexyl succinate (IOB = 0.32), and cholesteryl hydroxystearate (IOB = 0.16). These may be used alone or in combination of two or more.

<Component C>
The skin cleansing composition contains a nonionic surfactant with an HLB value of 19.3 or less as component C. Examples of component C include polyethylene glycol fatty acid esters, polyoxyethylene glycerin fatty acid esters, and polyglycerin fatty acid esters, each having an HLB value of 19.3 or less. These may be used alone or in combination of two or more.

Examples of polyethylene glycol fatty acid esters with an HLB value of 19.3 or less include polyethylene glycol distearate (250 E.O.), polyethylene glycol monoisostearate (6 E.O.), polyethylene glycol monoisostearate (12 E.O.), polyethylene glycol diisostearate (8 E.O.), polyethylene glycol monooleate (6 E.O.), polyethylene glycol dioleate (8 E.O.), polyethylene glycol dilaurate (8 E.O.), and polyethylene glycol dilaurate (20 E.O.).

Examples of polyoxyethylene glycerin fatty acid esters with an HLB value of 19.3 or less include polyoxyethylene glyceryl isostearate (8 E.O.), polyoxyethylene glyceryl triisostearate (20 E.O.), and polyoxyethylene glyceryl trioleate (50 E.O.).

An example of a polyglycerol fatty acid ester with an HLB value of 19.3 or less is polyglyceryl monostearate (10 E.O.).

The E.O. in the parentheses above represents the average number of moles of ethylene oxide added.

Here, the HLB (hydrophile-lipophile balance) value in this specification is an index showing the balance of hydrophilicity and lipophilicity, and is calculated by the following formula proposed by Oda, Teramura et al.

HLB = IOB x 10
The lower limit of the HLB value is not particularly limited, but is, for example, 2.0 or more, and preferably 6.0 or more. When the HLB value of component C is the lower limit or more, the washability after use is further improved.

The content of component C is 1.0 to 10.0% by mass, preferably 1.5 to 8.0% by mass, and more preferably 2.0 to 6.0% by mass. If the content of component C is 1.0% by mass or more, a good finish without stickiness can be obtained. If the content of component C is 10.0% by mass or less, good compatibility during application can be obtained.

<Water>
The skin cleanser composition preferably contains no water, more preferably contains no water, and the skin cleanser composition has improved stability, dirt removing power, and antiseptic properties when it contains no water, or contains no water, and more preferably contains no water.

<Other ingredients>
The above-mentioned skin cleansing composition may contain components other than Component A, Component B and Component C, as long as the above-mentioned effects are not impaired.

Other ingredients include those that can be normally included in skin cleansers and pharmaceuticals. Examples of other ingredients include moisturizers, liquid oils and fats, oily solid ingredients, liquid hydrocarbon oils, polyhydric alcohols, higher alcohols, ester oils other than Component B and Component C, silicone oils, silicone compounds, anionic surfactants, cationic surfactants, amphoteric surfactants, nonionic surfactants other than Component C, natural water-soluble polymers, semi-synthetic water-soluble polymers, synthetic water-soluble polymers, cationic polymers, thickening polymers, thickeners, UV absorbers, UV protection agents, vitamin compounds, sequestering agents, lower alcohols, monosaccharides, oligosaccharides, polysaccharides, amino acids, organic amines, polymer emulsions, pH adjusters, antioxidants, antioxidant assistants, preservatives, anti-inflammatory agents, whitening agents, activators, blood circulation promoters, antiseborrheic agents, anti-inflammatory agents, cooling agents (also known as cooling agents), bactericidal ingredients, antiperspirant ingredients, animal extracts, plant extracts, various extracts, pearlizing agents, fragrances, etc.

Humectants include trimethylglycine, glucose, sorbitol, maltitol, etc.

Liquid oils include orange oil, camellia oil, avocado oil, argan oil, olive oil, rice bran oil, soybean oil, corn oil, palm kernel oil, castor oil, grape seed oil, kukui nut oil, macadamia nut oil, meadowhoo oil, sunflower oil, etc.

The oily solid component is blended for the purpose of adjusting the viscosity of the skin cleansing composition and improving the feel. In this specification, "oily solid component" means an oily component that has no fluidity at 25°C. Examples of the oily solid component include hydrocarbons, fatty acids, waxes, solid fats and oils, etc. Examples of the hydrocarbons include high melting point paraffin, microcrystalline wax, polyethylene wax, petrolatum, etc. Examples of the fatty acids include shea butter, lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, etc. Examples of the waxes include carnauba wax, candelilla wax, hydrogenated jojoba oil, rice bran wax, beeswax, Japan wax, shellac wax, spermaceti wax, lanolin, etc. These may be used alone or in combination of two or more. The content of the oily solid component is preferably 0.5 to 10.0% by mass, more preferably 5.0 to 25.0% by mass.

Examples of liquid hydrocarbon oils include liquid paraffin, paraffin, ceresin, squalene, and squalane. The content of the hydrocarbon oil is preferably 2.0 to 30.0% by mass, more preferably 5.0 to 25.0% by mass. The liquid hydrocarbon oil is blended for the purpose of adjusting the viscosity and improving the feel. In this specification, "liquid hydrocarbon oil" means a hydrocarbon that is fluid at 25°C.

Examples of polyhydric alcohols include ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, isoprene glycol, dipropylene glycol, 1,3-butylene glycol (also known as 1,3-butanediol), 1,2-butanediol, 1,2-decanediol, glycerin (also known as 1,2,3-propanetriol), concentrated glycerin, diglycerin, triglycerin, polyglycerin, glucose, maltose, maltitol, sucrose, mannitol, sorbitol, 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol, polyoxyethylene methyl glucoside, and polyoxypropylene methyl glucoside. However, the above-mentioned polyethylene glycol is not included in the polyhydric alcohols.

The content of the polyhydric alcohol is preferably 10.0 to 60.0% by mass, and more preferably 20.0 to 50.0% by mass. If the content of the polyhydric alcohol is 10.0% by mass or more, the stability of the skin cleanser composition is improved. If the content of the polyhydric alcohol is 60.0% by mass or less, the feel of the skin cleanser composition when used is improved.

Examples of silicone oils include cyclopentasiloxane, hydrogen dimethicone, caprylyl methicone, dimethicone, modified silicone, etc.

Examples of the anionic surfactants include higher fatty acid soaps, alkyl sulfates, alkyl phosphates, polyoxyalkylene alkyl ether phosphates, polyoxyethylene alkyl ether sulfates, polyoxyethylene alkyl phenyl ether sulfates, alkyl ether carboxylates, acyl methyl taurines, N-acyl-N-methyl-β-alanines, N-acyl glycines, N-acyl glutamates, polyoxyethylene alkyl carboxylates, alkyl phenyl ether sulfonates, alkyl sulfosuccinates and their salts, N-acyl sarcosines and their salts, polyoxyethylene coconut oil fatty acid monoethanolamide sulfates, etc.

Examples of the cationic surfactant include amine salts such as alkylamine salts, fatty acid amide amine salts, and ester-containing tertiary amine salts; alkyl quaternary ammonium salts such as monoalkyl quaternary ammonium salts, dialkyl quaternary ammonium salts, trialkyl quaternary ammonium salts, and benzalkonium quaternary ammonium salts; cyclic quaternary ammonium salts such as alkylpyridinium salts; and benzethonium chloride.

The above amphoteric surfactants include glycine-type amphoteric surfactants such as alkyl glycine salts, carboxymethyl glycine salts, and N-acylaminoethyl-N-2-hydroxyethyl glycine salts; aminopropionic acid-type amphoteric surfactants such as alkyl aminopropionates and alkyl iminodipropionates; aminoacetic acid betaine-type amphoteric surfactants such as alkyl dimethyl aminoacetic acid betaines and fatty acid amidopropyl dimethyl aminoacetic acid betaines; and sulfobetaine-type amphoteric surfactants such as alkyl hydroxysulfobetaines.

Examples of cationic polymers include acrylamide-acrylic acid-dimethyldiallylammonium chloride copolymer, dimethyldiallylammonium chloride-acrylic acid copolymer, dimethyldiallylammonium chloride-acrylamide copolymer, etc.

Examples of thickening polymers include carboxyvinyl polymers, alkyl-modified carboxyvinyl polymers, hydroxyethyl cellulose, xanthan gum, etc.

The skin cleanser composition may contain a particulate component that has been blended as a scrubbing agent in conventional skin cleansers for the purpose of improving the dirt removing power and imparting a massage effect during use. The content of the particulate component is preferably 5.0 to 400.0 parts by mass, more preferably 10.0 to 300.0 parts by mass, and even more preferably 25.0 to 250.0 parts by mass, per 100.0 parts by mass of the skin cleanser composition consisting of components other than the particulate component. If the content of the particulate component is 5.0 parts by mass or more, the dirt removing power of the particulate component is improved. Furthermore, if the content of the particulate component is 400.0 parts by mass or less, the feeling of use of the skin cleanser composition is improved.

Examples of particle components include sodium chloride, sodium carbonate, sodium bicarbonate, sucrose, xylitol, erythritol, silica, plant particles, hydrocarbon wax particles, fatty acid ester particles, polyethylene powder, etc. Sodium chloride, sodium carbonate, and sodium bicarbonate are preferred, and sodium chloride, as well as sodium carbonate and/or sodium bicarbonate are more preferred.

When the particle component contains sodium chloride, the sodium chloride content is preferably 60.0 to 99.0% by mass, and more preferably 80.0 to 99.0% by mass. If the sodium chloride content is 60.0% by mass or more, the dirt removal power and massage effect of the skin cleansing composition can be improved. If the sodium chloride content is 99.0% by mass or less, the burden on the skin is reduced.

The representative particle size of sodium chloride is preferably 100 to 2000 μm, more preferably 150 to 1000 μm, and even more preferably 150 to 500 μm. If the representative particle size of sodium chloride is 100 μm or more, the dirt removal power and massage effect of the skin cleansing composition are improved. If the representative particle size of sodium chloride is 2000 μm or less, the burden on the skin is reduced. In this specification, the representative particle size is the particle size of sodium chloride particles when the sodium chloride particles are arranged in order from smallest to largest particle size, the volumes of the sodium chloride particles are accumulated from the smallest to the largest, and the accumulated volume reaches 50% of the total volume of the sodium chloride particles, and is measured by laser diffraction particle size analysis.

When the particle component contains sodium bicarbonate and/or sodium carbonate, the content of sodium bicarbonate and/or sodium carbonate in the particle component is preferably 1.0 to 40.0% by mass, more preferably 1.0 to 20.0% by mass. Sodium bicarbonate and/or sodium carbonate have smaller particle sizes than sodium chloride, and therefore place less strain on the skin. Therefore, if the content of sodium bicarbonate and/or sodium carbonate is 1% by mass or more, the strain on the skin can be reduced. If the content of sodium bicarbonate and/or sodium carbonate is 40.0% by mass or less, the dirt removal power and massage effect can be improved.

The skin cleanser composition may also contain organic powders such as nylon powder, inorganic powders such as aluminum chlorohydrate and talc, colorants, pigments, etc. as powder components.

Other ingredients can be blended in appropriate amounts as needed depending on the application and purpose. Only one type of other ingredient may be used, or two or more types may be combined.

2. Formulation, production method and use of skin cleansing composition
The skin cleansing composition can be obtained by blending Component A, Component B, and Component C, and optionally water and other components. Specifically, the skin cleansing composition can be obtained, for example, by mixing the above-mentioned components and stirring them using a known mixing device such as a propeller mixer, a dispersing mixer, or a paddle mixer.

The skin cleansing composition is suitable for use in cleaning the skin, for example as a makeup remover or face wash. The skin cleansing composition is not particularly limited, but can be used for cleaning the scalp (shampoo or rinse), body (body soap or body scrub), and hands (hand soap), in addition to makeup remover and face wash.

The skin cleansing composition may be in the form of a solid, liquid, gel, emulsion, cream, etc.

The product form of the skin cleansing composition is not particularly limited, but it can be in the form of a pump container, a tube container, a jar container, or the like. Of these, a jar container is preferred.

Below, one embodiment of the present invention will be specifically explained using examples, but the embodiment of the present invention is not limited to these examples. Note that, for example, in the tables, the blend amounts are expressed in "mass %" unless otherwise specified, and all blend components are converted to pure contents.

〔Evaluation methods〕
The evaluation methods used in the examples and comparative examples are described below. The following evaluations were performed by three expert evaluators.

<Evaluation of Usability>
0.5 g of the skin cleansing composition was placed on the index finger of the right hand and applied to the inside of the left forearm in a width of about 5 cm by five reciprocating strokes. The sensation of use during application was evaluated according to the following criteria.
⊚ (Very good): There is absolutely no resistance to the applied area and it spreads smoothly.
◯ (Good): There is a slight resistance to the applied area, but it spreads without any problems.
× (bad): Resistance was felt on the applied area, and it was difficult to spread.

<Evaluation of dirt removal ability>
0.02 g of liquid foundation was applied to black artificial leather that had been dried, and then 0.25 g of the skin cleanser composition was applied to it. The skin was then moved back and forth five times over a width of 5 cm while applying a load of approximately 200 g to the tip of the index finger, and then the skin was rinsed off with warm water of approximately 40° C. The liquid foundation remaining on the artificial leather was visually observed, and the stain removing ability was evaluated according to the following criteria.
⊚ (Very good): 90% or more of the liquid foundation is removed.
◯ (Good): Between 70% and 90% of the liquid foundation has been removed.
× (bad): More than 30% of the liquid foundation remains.

<Evaluation of washability after use>
0.5 g of the skin cleansing composition was applied to the tip of the index finger of the right hand and applied to the inside of the left forearm in a width of about 5 cm by five reciprocal strokes. After washing off the applied area with warm water of about 40° C., the stickiness was evaluated according to the following criteria.
⊚ (very good): Does not feel sticky at all.
◯ (Good): Feels a little sticky, but not uncomfortable.
× (bad): Very sticky.

[Examples 1 to 25 and Comparative Examples 1 to 5]
Skin cleansing compositions of Examples 1 to 25 and Comparative Examples 1 to 5 were prepared by blending the components as shown in Tables 1 to 3. The components used in each Example and Comparative Example are shown below.

<Component A>
Polyethylene glycol 1500 (product name: BROWNON PEG-1500, manufactured by Aoki Oil Industries Co., Ltd.)
Polyethylene glycol 400 (product name: BROWNON PEG-400, manufactured by Aoki Oil Industries Co., Ltd.)
Polyethylene glycol 20000 (product name: BROWNON PEG-20000S, manufactured by Aoki Oil Industries)
<Component B>
Cetyl ethylhexanoate (trade name: NIKKOL CIO, manufactured by Nippon Surfactant Industries Co., Ltd.)
Cholesteryl hydroxystearate (product name: Salacos HS, manufactured by Nisshin Oillio Co., Ltd.)
Glyceryl tri-2-ethylhexanoate (product name Exepar TGO, manufactured by Kao Corporation)
Diisopropyl adipate (trade name NIKKOL DID, manufactured by Nikko Chemicals Co., Ltd.)
<Component C>
Polyethylene glycol distearate (250 E.O.) (trade name Emanon 3299RV, manufactured by Kao Corporation)
Polyethylene glycol monoisostearate (6E.O.) (trade name EMALEX
PEIS-6, manufactured by Nippon Emulsion Co., Ltd.)
Polyethylene glycol monoisostearate (12E.O.) (product name EMALEX PEIS-12, manufactured by Nippon Emulsion Co., Ltd.)
Polyethylene glycol diisostearate (8E.O.) (product name EMALEX 400di-IS, manufactured by Nippon Emulsion Co., Ltd.)
Polyethylene glycol monooleate (6E.O.) (product name EMALEX OE-6, manufactured by Nippon Emulsion Co., Ltd.)
Polyethylene glycol dioleate (8E.O.) (product name EMALEX 400di-O, manufactured by Nippon Emulsion Co., Ltd.)
Polyethylene glycol dilaurate (8E.O.) (product name EMALEX 400di-L, manufactured by Nippon Emulsion Co., Ltd.)
Polyethylene glycol dilaurate (20E.O.) (product name EMALEX 1000di-L, manufactured by Nippon Emulsion Co., Ltd.)
Polyglyceryl monostearate (10 E.O.) (trade name: NIKKOL DECAGLYN 1-SV, manufactured by Nikko Chemicals Co., Ltd.)
Polyoxyethylene glyceryl isostearate (8E.O.) (product name: BROWNON RGL-8MISE, manufactured by Aoki Oil Industries Co., Ltd.)
Polyoxyethylene glyceryl triisostearate (20E.O.) (EMALEX
GWIS-320EX, manufactured by Nippon Emulsion Co., Ltd.)
Polyoxyethylene glyceryl trioleate (50 E.O.) (product name EMELEX GWO-350, manufactured by Nippon Emulsion Co., Ltd.)
<Other ingredients>
Other surfactants: Polyethylene glycol monostearate (140E.O.) (product name Emanon 3199VB, manufactured by Kao Corporation)
Hydrocarbon oil: liquid paraffin (product name: CARNATION, manufactured by Sonneborn LLC), squalane (product name: NIKKOL sugar squalane, manufactured by Nikko Chemicals Co., Ltd.)
Oily solid components: high melting point paraffin (trade name SP-0165, manufactured by Nippon Seiro Co., Ltd.), shea butter (trade name Star Shea Butter refined, manufactured by The Hallstar Company), beeswax (trade name Kosan Dash sea beeswax, manufactured by Miki Chemical Industry Co., Ltd.)
Polyhydric alcohol: glycerin (product name: Cosmetic concentrated glycerin, manufactured by Sakamoto Pharmaceutical Industry Co., Ltd.), dipropylene glycol (product name: DPG, manufactured by Koyo Fine Chemical Co., Ltd.)
Particle components (scrubbing agents): Sodium chloride (representative particle size: 270-310 μm) (product name: Nakrufo 1, manufactured by Naikai Salt Co.), Sodium chloride (representative particle size: 180-220 μm) (product name: Nakrufo 2, manufactured by Naikai Salt Co.), Sodium carbonate (product name: Soda Ash Light Food Additive, manufactured by Tokuyama Corporation), Sodium hydrogen carbonate (product name: Sodium bicarbonate E grade food additive, manufactured by Tokuyama Corporation)
〔Evaluation results〕
The above-mentioned evaluations were carried out for each skin cleansing composition. The evaluation results, together with the compositions, are shown in Tables 1 to 4. The values other than the IOB value and HLB value represent the content of each component, and the units are % by mass.

From Tables 1 to 4, the skin cleansing compositions of Examples 1 to 25, which contain specific amounts of components A, B, and C, showed good results in terms of feel when used, dirt removal power, and wash-off after use. On the other hand, Comparative Example 1, which does not contain component B, and Comparative Example 2, which contains a surfactant with an HLB value of 19.4, were poor in dirt removal power. Comparative Example 3, which does not contain component A, was poor in both dirt removal power and wash-off after use. Furthermore, Comparative Example 4, which contains component A in excess of a specific amount, was poor in feel when used. Comparative Example 5, which does not contain component C, was poor in wash-off after use.

[Prescription Example]
[Makeup remover]
Polyethylene glycol 1500 19.8% by mass
Polyethylene glycol 400 4.8% by mass
Polyethylene glycol 20000 2.0% by mass
Cetyl ethylhexanoate 10.0% by mass
Diisopropyl adipate 10.0% by mass
Polyethylene glycol diisostearate (8E.O.) 4.0% by mass
Polyoxyethylene glyceryl isostearate (8E.O.) 3.0% by mass
Olive oil 7.0% by mass
Rice bran oil 2.0% by mass
Beeswax 4.0% by mass
Squalene 5.0% by mass
Glycerin 9.89% by mass
Dipropylene glycol 13.0% by mass
Sorbitol 5.0% by mass
Tocopherol acetate 0.01% by mass
Phenoxyethanol 0.5% by mass
Total 100.0% by mass
[Body Scrub]
The following skin cleansing agent and scrubbing agent were prepared and mixed together so that the content of the scrubbing agent per 100 parts by mass of the skin cleansing composition was 100.0% by mass.

(Skin cleansing composition)
Polyethylene glycol 1500 35.0% by mass
Polyethylene glycol 400 5.0% by mass
Polyethylene glycol 20000 2.0% by mass
Isopropyl myristate 4.5% by mass
Glyceryl tri-2-ethylhexanoate 3.0% by mass
Polyethylene glycol dioleate (8E.O.) 0.5% by mass
Polyoxyethylene glyceryl trioleate (50 E.O.) 2.0% by mass
Macadamia nut oil 4.0% by mass
Beeswax 2.0% by mass
High melting point paraffin 3.0% by mass
Microcrystalline wax 2.0% by mass
Squalene 3.0% by mass
Glycerin 13.99% by mass
Dipropylene glycol 15.0% by mass
Sorbitol 5.0% by mass
Tocopherol acetate 0.01% by mass
Total 100.0% by mass
(Scrubbing agent)
Sodium chloride 80.0% by mass
Sodium bicarbonate 20.0% by mass
Total 100.0% by mass

The present invention can be suitably used as a cleanser for the face, hands, body, scalp, etc.

Claims (2)

A skin cleanser composition comprising the following Components A to C, wherein the content of Component A is 20.0 to 50.0% by mass, the content of Component B is 2.0 to 30.0% by mass, the content of Component C is 1.0 to 10.0% by mass, and the content of water is 5.0% by mass or less, or the composition contains no water .
Component A: polyethylene glycol Component B: ester oil with an IOB value of 0.1 or more and less than 0.6 Component C: nonionic surfactant with an HLB value of 19.3 or less
The above component A includes the following components A1 and A2.
Component A1: Polyethylene glycol having a number average molecular weight of 500 to 3,000
Component A2: Polyethylene glycol having a number average molecular weight of more than 3000 The skin cleansing composition according to claim 1, wherein Component A contains 50.0% by mass or more of Component A1.