JP4928095B2 - Cleaning composition - Google Patents

Description

  The present invention is gentle to the skin, characterized by removing the makeup cosmetics such as mascara, foundation, and lipstick applied to the skin and the sunscreen agent and adding water to lather and washing the skin simultaneously. More specifically, the present invention relates to a detergent composition containing a predetermined proportion of fatty acid alkanolamide, an oil component and an anionic surfactant.

  Conventionally, the act of face washing has been performed by a method called double face washing (washing twice). First, makeup cosmetics such as lipstick, mascara, and foundation are removed with a cleansing agent such as cleansing oil or cleansing cream, and then skin dirt is removed with a facial cleanser such as soap or facial cleansing foam. The cleansing material is an almost non-foamed cleaning material mainly composed of liquid paraffin, squalane, vegetable oil and the like in order to remove oily cosmetics that are difficult to remove with soaps and other cleaning materials. On the other hand, facial cleansers are soaps and other detergents mainly composed of an anionic surfactant, so that they do not irritate the skin. ing.

  (A) hydrophilic nonionic surfactant, (B) amphoteric surfactant, (C) water-soluble solution having a hydroxyl group, as the above cleansing material has good permeability to skin details and is suitable for use in bathrooms, etc. A transparent or translucent gel-like or liquid cleansing composition (e.g., Patent Document 1) containing an organic compound, (D) liquid oil and (E) water, without reducing foaming and detergency, A cleaning composition containing N-acylglycine or a salt thereof and a higher fatty acid salt or a fatty acid alkanolamide and an oily component, which has an excellent moisturizing effect that improves squeakiness and tightness and gives a moist feeling after washing (for example, Patent Document 2) or a stable transparent forming gel or having the appearance of the gel (i) fatty phase, (ii) at least one C5-C7 carbohydrate fatty ester (Iii) at least one polyol, and (iv) at least one foaming surfactant (anionic surfactants) skin cleansing composition containing (e.g., see Patent Document 3) it is known.

  In addition, 1 to 70% by weight of a polyhydric alcohol and 1 to 70% by weight selected from specific polyglycerin esters, which can remove oily dirt and easily remove the cleansing material itself, Cosmetics containing 1 to 50% by weight of water (see, for example, Patent Document 4) and 1 to 80% of dialkyl ethers exhibiting good penetration into the skin crevice, high cleaning effect and excellent usability And 0.5 to 50% by weight of a hydrophilic nonionic surfactant having an HLB of more than 9 and 0.1 to 40% by weight of a nonionic surfactant having an HLB in the range of 3 to 9 / W emulsified cleansing cosmetics (for example, see Patent Document 5) and excellent cleansing effect, easier cleansing, and no oily feeling after use, with an HLB value of 10.0 to 13.0 Non-ionic A surfactant, a liquid transparent skin cleanser containing a methylphenyl polysiloxane (for example, see Patent Document 6) it is known.

  By the way, the method of double face washing has become established among women, but there are drawbacks such as being troublesome to wash twice and easily causing skin irritation. There is a need for a double facial cleanser that is highly safe to remove. As such double facial cleansers, cleansing cosmetics based on solubilized compositions obtained from anionic surfactants, lipophilic nonionic surfactants having an HLB value of 10 or less, oil components and water (for example, patents) Reference 7) is known.

  On the other hand, a detergent composition containing 20% by mass or more of a fatty acid alkanolamide, an oily component, and an anionic surfactant that does not require double facial cleansing has not been known.

Japanese Patent Laid-Open No. 06-016524 JP-A-8-12993 JP-A-10-139626 Japanese Patent Laid-Open No. 10-251124 JP 2000-191438 A JP 2004-256474 A JP-A-6-116118

  In recent years, double facial cleansers such as foams and creams have become commercially available, but they did not satisfy consumers due to weakness in removing makeup cosmetics or insufficient foaming. . In particular, the current situation is that waterproof type makeup cosmetics and sunscreen agents cannot be sufficiently removed. Furthermore, most of the cleansing materials that are commercially available generally have a cleansing power that is halved when mixed with water, which is disadvantageous in that they cannot be used during bathing. Recently, there has been a type of facial cleanser that can be used even when the skin is wet, but there is a problem that waterproof makeup cosmetics and sunscreen agents cannot be removed sufficiently. SUMMARY OF THE INVENTION An object of the present invention is to provide a skin-friendly cleaning composition intended to be able to wash off makeup cosmetics and skin dirt with a single cleaning.

  Make-up cosmetics and sunscreen agents are usually designed to keep them oleophilic after application to the skin in order to prevent them from running off due to sweat, etc., so they are sufficiently removed with anionic surfactants such as soap. Can not do it. Therefore, generally, a method of removing makeup cosmetics and sunscreen agents by dissolving in oils such as mineral oils such as liquid paraffin and vegetable oils such as olive oil, esters such as isopropyl palmitate, and silicones is employed. .

  On the other hand, normal skin stains can be sufficiently removed with an anionic surfactant such as soap. However, since there is a concern about irritation to the skin, it should be taken up by hand before use and foamed. Dermatologists also recommend how to wash gently so that it wraps around.

  As mentioned above, oily makeup cosmetics and sunscreen agents and normal skin dirt are removed at the same time by adding oily ingredients and anionic surfactants to obtain sufficient foaming. There is a need. However, when there are many oil components, favorable foaming cannot be obtained, and conversely, when there are few oil components, there is a technical problem that sufficient cleansing power cannot be obtained.

  As a result of intensive studies to solve the above-mentioned problems, the present inventors found that an oily component necessary for cleansing force and foaming by blending 20% by mass or more of a fatty acid alkanolamide represented by coconut oil fatty acid diethanolamide. The necessary anionic surfactant can be blended at the same time, and it was found that a skin-friendly cleaning composition having cleansing power and foaming power necessary for skin cleaning was obtained, and the present invention was completed. .

That is, the present invention includes (1) a composition for cleaning the skin characterized by containing 20 to 50% by mass of a fatty acid alkanolamide, an oily component, and an anionic surfactant, and (2) an oily component. the, or set composition as above (1), wherein the containing 10 to 50 mass%, and (3) blending ratio of the oil component and the fatty acid alkanolamide (mass ratio), 1: 1 to 1: above, wherein the a 3 (1) or (2) or the set composition as described, (4) an anionic surfactant, the characterized by containing 2 to 30 mass% (1) - ( 3) and the set composition as claimed any one of the (5) anionic surfactant and mixing ratio of the fatty acid alkanolamide (mass ratio), 1: 2 to 1: above, wherein the a 4 (1 ) for the set composition as set forth in any one of the - (4).

Moreover, this invention is (6) Any one of said (1)-(5) characterized by the compounding ratio (mass ratio) of an anionic surfactant and an oil component being 1: 1-1: 3. and set composition as described, and characterized in that (7) fatty acid alkanolamide is at least one higher fatty acid monoethanolamide, higher fatty acid diethanolamide, are selected from the group consisting of coconut oil fatty acid N- methyl ethanolamide and set composition as defined in any one of the items (1) to (6) to (8) an oily component, fats, waxes, hydrocarbons, higher fatty acids, higher alcohols, esters, silicone oils, and lipophilic surfactants and set composition as defined in any one of the items (1) to (7), characterized in that from the group consisting of active agent is at least one selected, (9) an anionic surfactant, a fatty acid soap, alkyl ether Rubonate, acyl lactate, N-acyl sarcosine salt, N-acyl glutamate, N-acyl methyl alanine salt, N-acyl methyl taurate, alkane sulfonate, α-olefin sulfonate, α-sulfo fatty acid Consists of methyl ester salt, alkyl sulfosuccinate, acyl isethionate, alkyl sulfate ester, alkyl ether sulfate, higher fatty acid alkanolamide sulfate ester, monoalkyl phosphate ester salt, and polyoxyethylene alkyl ether phosphate ester salt characterized in that at least one selected from the group for the set composition as defined in any one of the items (1) to (8).

  The cleaning composition of the present invention can cleanse cosmetics such as waterproof makeup cosmetics and sunscreens applied to the skin, and can be used even when the skin is wet. It has cleansing power and at the same time it has foaming necessary for cleaning the skin, so it is extremely useful as a skin-friendly cleaning agent that does not require double facial cleansing. Moist feeling after use (moist feeling) is excellent.

  The detergent composition of the present invention is not particularly limited as long as it contains 20 to 50% by mass of a fatty acid alkanolamide, an oil component, and an anionic surfactant, and particularly as a fatty acid alkanolamide. Higher fatty acid alkanolamides such as higher fatty acid monoethanolamide and higher fatty acid diethanolamide, coconut oil fatty acid N-methylethanolamide and the like are preferable.

  Specific examples of the higher fatty acid monoethanolamide and higher fatty acid diethanolamide include lauric acid monoethanolamide, lauric acid diethanolamide, palmitic acid monoethanolamide, palmitic acid diethanolamide, coconut oil fatty acid monoethanolamide, and coconut oil fatty acid. Diethanolamide and the like can be mentioned, and particularly preferred examples include coconut oil fatty acid diethanolamide, palmitic acid monoethanolamide, and lauric acid monoethanolamide. Examples of coconut oil fatty acid N-methylethanolamide include, for example, trademarks The name “Aminone C-11S” (manufactured by Kao Corporation) can be specifically exemplified.

  As content of the fatty acid alkanolamide in this invention, 20-50 mass% is required, However, Preferably it is 25-40 mass%. When the content of the fatty acid alkanolamide in the cleaning composition is less than 20% by mass, when the oily component and the anionic surfactant are blended, they are not uniformly mixed, and the cleansing power by the oily component and the skin by the anionic surfactant When the foaming force required for washing is reduced and exceeds 50%, the contents of the oily component and the anionic surfactant are relatively reduced, and the system becomes unstable.

  The oily component in the present invention is not particularly limited as long as it is an oily component that is usually used in cosmetics, pharmaceuticals, and the like. Oils, waxes, hydrocarbons, higher fatty acids, higher alcohols, esters, silicone oils, and lipophilic interfaces Examples include at least one oily component selected from the group consisting of active agents. Examples of oils and fats include olive oil, camellia oil, grape seed oil, macadamia nut oil, castor oil, and waxes. Examples thereof include carnauba wax, candelilla wax, jojoba oil, beeswax, lanolin and the like, and hydrocarbons include liquid paraffin, paraffin, petrolatum, ceresin, microcrystalline wax, squalane and the like.

  Examples of higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, and isostearic acid. Examples of higher alcohols include cetyl alcohol, stearyl alcohol, isostearyl alcohol, and 2-octyldodecanol. Examples of the esters include isopropyl myristate, 2-octyldodecyl myristate, cetyl 2-ethylhexanoate, diisostearyl malate, and the like. Furthermore, examples of the silicone oil include methylpolysiloxane and methylphenylpolysiloxane, and examples of the lipophilic surfactant include lipophilic glyceryl monostearate, lipophilic glyceryl monooleate, and (capryl / capric acid). Examples thereof include glycerin and sorbitan stearate.

  For example, a combination of squalane and jojoba oil may be used for the gel-like cleaning agent, and olive oil may be used for the cream-like cleaning agent, and these may be used alone or in combination of two or more. Further, solid oils such as beeswax and paraffin may be used in a liquid form in combination with liquid oil. The oil component can be added in an amount of usually 10 to 50%, preferably 15 to 30%, based on the total amount of the cleaning composition. If it is less than 10%, cleansing power is insufficient, the system may become unstable, and the moist feeling after use tends to be insufficient. When it exceeds 50%, foaming is insufficient. Moreover, it is preferable that the compounding ratio (mass ratio) of an oil-based component and the said fatty acid alkanolamide is 1: 5 to 2: 1, especially 1: 1 to 1: 3.

  Although it does not restrict | limit especially as an anionic surfactant in this invention, Fatty acid soap, alkyl ether carboxylate, acyl lactate, N-acyl sarcosine salt, N-acyl glutamate, N-acyl methyl alanine salt, N-acyl methyl Taurine salt, alkane sulfonate, α-olefin sulfonate, α-sulfo fatty acid methyl ester salt, alkyl sulfosuccinate, acyl isethionate, alkyl sulfate ester, alkyl ether sulfate, higher fatty acid alkanolamide sulfate, Specific examples include at least one selected from the group of monoalkyl phosphate ester salts and polyoxyethylene alkyl ether phosphate ester salts. Among them, lauroyl sarcosine sodium and lauroyl methyl taurate sodium are preferred. It can be illustrated. Moreover, you may use these individually or in combination of 2 or more types.

  The content of the anionic surfactant in the cleaning composition is not particularly limited, but it is usually 2-30% by mass, preferably 5-25% by mass, more preferably 10-15% by mass. If it is less than 2%, foaming is insufficient, and if it exceeds 30%, the system may become unstable (solidify). Moreover, it is preferable that the compounding ratio (mass ratio) of an anionic surfactant and the said fatty acid alkanolamide is 1: 5 to 2: 1, especially 1: 2 to 1: 4. Moreover, it is preferable that the compounding ratio (mass ratio) of an anionic surfactant and the said oil component is 1: 5 to 2: 1, especially 1: 1 to 1: 3.

  The cleaning composition of the present invention contains, in addition to the above active ingredients, a solubilizer, preservative, bactericidal agent, wetting agent, ultraviolet absorber, thickener, perfume, etc., as necessary when preparing the composition. It can be blended after the preparation of the composition, and further, adjuvants commonly used in cosmetics and cleaning agents can be used in combination as long as the effects of the present invention are not impaired.

  Examples of solubilizers and wetting agents include various surfactants. Preservatives and fungicides include benzoic acid, benzoates, salicylic acid, salicylates, phenol, sorbic acid and salts thereof, parabens, and methylparabens. , Chlorocresol, hexachlorophene, resorcin, isopropylmethylphenol, orthophenylphenol, benzalkonium chloride and the like. Furthermore, examples of the ultraviolet absorber include benzophenone derivatives, paraaminobenzoic acid derivatives, methoxycinnamic acid derivatives, salicylic acid derivatives, and other urocanic acids.

  As thickeners, water-soluble polymers are mainly used. Natural polymers (plants, microbial animals), semi-synthetic polymers (cellulose, starch, alginic acid, etc.), synthetic polymers (vinyl) Etc.) and inorganic substances such as bentonite, finely divided silicon oxide, etc., which are used to maintain the stability of milky lotion, and as perfumes, they are distilled, extracted and pressed from naturally fragrant plants and animals. Natural flavors extracted by the separation operation such as rose oil, jasmine oil, neroli oil, lavender oil, clove oil, pepper oil, musk oil and the like, and synthetic flavors include limonene, linanol, citral and the like. .

  As the liquid substrate, ethanol, phenoxyethanol, 1,3-butanediol, 1,2-pentanediol, dipropylene glycol, glycerin, purified water and the like can be used. Furthermore, in order to give a pearly luster, ethylene glycol diasterate or the like can be added.

  Although the form of the cleaning composition of the present invention can take any form, it is usually preferable to use a cream form or a gel form.

  EXAMPLES Hereinafter, although an Example demonstrates this invention more concretely, the technical scope of this invention is not limited to these illustrations.

[Gel-like cleaning]
(Compounding ingredients)
1. Squalane 10.0% by mass
2. Jojoba oil 10.0% by mass
3. Coconut oil fatty acid diethanolamide 25.0% by mass
4). Lauroyl sarcosine sodium 10.0% by mass
5. Methylparaben 0.2% by mass
6). Purified water 44.8% by mass
(Manufacturing method)
(1) Ingredients 1 to 3 and ingredient 5 are heated to 70 to 80 ° C. and dissolved.
(2) Component 4 and component 6 are heated to 70-80 ° C. and dissolved uniformly.
(3) While (1) is stirred, (2) is gradually added, and after sufficient stirring, the mixture is gradually cooled to 30 ° C. to obtain a translucent gel-like cleaning material.

  The cleaning effect of the gel-like cleaning material was tested by 10 women in their 20s to 50s after makeup. First, cleanse the face with 3 to 5 ml of gel-like cleaning material, massage it on your palm, then add appropriate water and foam, wash the face, and finally rinse with water. The result was that cleansing and cleansing were sufficient and the feeling of use was satisfactory.

[Cream cleanser]
(Compounding ingredients)
1. Lauroyl methyl taurine sodium 15.0% by mass
2. Palmitic acid monoethanolamide 20.0% by mass
3. Lauric acid monoethanolamide 10.0% by mass
4). Ethylene glycol diasterinate 2.0% by mass
5. Olive oil 15.0% by mass
6). Phenoxyethanol 0.4% by mass
7). Sodium benzoate 0.2% by mass
8). Purified water 37.4% by mass
(Manufacturing method)
-After heating components 1-8 to 70-80 degreeC and disperse | distributing uniformly, it cools to 30 degreeC and obtains the cream-like washing | cleaning agent which has white pearl luster.

  The cleaning effect of the creamy detergent was tested by 10 women in their 20s to 50s after makeup. First, cleanse the face with 3-5ml of creamy cleansing powder, massage it on your palm, then add some water and foam, wash the face, and finally rinse with water. The result was that cleansing and cleansing were sufficient and the feeling of use was satisfactory.

Claims (9)

A composition for cleaning skin, comprising 20 to 50% by mass of a fatty acid alkanolamide, an oily component, and an anionic surfactant. An oil component, according to claim 1, characterized in that it contains 10 to 50 mass% set Narubutsu. Mixing ratio of the oil component and the fatty acid alkanolamide (mass ratio), 1: 1 to 1: set composition as claimed in claim 1 or 2, wherein the 3. An anionic surfactant, according to any one of claims 1 to 3, characterized in that it contains 2 to 30 mass% set Narubutsu. Anionic compounding ratio of the surfactant and fatty acid alkanolamide (mass ratio), 1: 2 to 1: set composition as claimed in any of claims 1 to 4, characterized in that it is 4. Anionic compounding ratio of the surfactant and oil component (mass ratio), 1: 1 to 1: set composition as claimed in any of claims 1 to 5, characterized in that it is 3. The fatty acid alkanolamide is at least one selected from the group consisting of higher fatty acid monoethanolamide, higher fatty acid diethanolamide, and coconut oil fatty acid N-methylethanolamide. set Narubutsu. The oil component is at least one selected from the group consisting of fats and oils, waxes, hydrocarbons, higher fatty acids, higher alcohols, esters, silicone oils, and lipophilic surfactants. set composition as set forth in any one of to 7. Anionic surfactant is fatty acid soap, alkyl ether carboxylate, acyl lactate, N-acyl sarcosine salt, N-acyl glutamate, N-acyl methyl alanine salt, N-acyl methyl taurate, alkane sulfonate, α-olefin sulfonate, α-sulfo fatty acid methyl ester salt, alkyl sulfosuccinate, acyl isethionate, alkyl sulfate ester, alkyl ether sulfate, higher fatty acid alkanolamide sulfate, monoalkyl phosphate ester salt, and set composition as claimed any one of claims 1 to 8, wherein the at least one selected from the group consisting of polyoxyethylene alkyl ether phosphate salt.