JP5025202B2 - Cleansing cosmetics - Google Patents

Description

  The present invention relates to a cleansing cosmetic mainly used for makeup removal, and more particularly to improvement of its function and feeling of use.

  The present invention provides a cleansing cosmetic that is safe and has a mild action on the skin, is well-suited to oil stains, has an excellent makeup-removing effect, and has a slimy feeling after washing off. It is intended to obtain.

  In cleansing cosmetics used for removing makeup, it is always desired to be able to quickly and cleanly be removed without stress in a single operation. In general, the cleansing charge for removing makeup does not remove the remaining feeling after it becomes uncomfortable, so use a facial cleanser such as soap or cleansing foam to remove the initial cleansing charge adsorbed on the skin again. It was normal to take time and effort twice. Due to recent advances in technological capabilities, products that satisfy these functions in one step are being put on the market.

  Such cosmetics that enable cleansing of makeup with a high degree of satisfaction in a single operation include oil-based cleansing cosmetics generally called oil cleansing materials, oil components and hydrophilic non-ions. Liquid crystal gel type using a three-component liquid crystal structure forming region of a surfactant and a water-soluble substance having a hydroxyl group in the molecule as a cleansing material, and other cleansing cosmetics using alkyl glucoside and maltitol ether It is done.

  The literature regarding oil-type cleansing cosmetics includes 5 to 15% by weight of a nonionic surfactant having an HLB value of 7 to 14 which is liquid or paste at normal temperature, 0.1 to 2% by weight of water, and 80 to 95% by weight. % Cleansing cosmetic (see Patent Document 1), sucrose fatty acid ester, alkylglycoside or polyethylene glycol type surfactant, oil component, water-soluble composition (see Patent Document 2), polyoxy One-phase transparent skin cleanser containing ethylene glycerin fatty acid ester (see Patent Document 3), oily makeup cosmetics containing oligoesters and hydrocarbons having a branched structure (see Patent Document 4), glycerin fatty acid ester Eiko Oily cleanse containing sundiacid condensate, oily component that is liquid at room temperature, nonionic surfactant, and purified water Such as grayed cosmetics (see Patent Document 5) are disclosed.

  References on liquid crystal gel type cleansing cosmetics include washing out based on a hydrophilic nonionic surfactant, a water-soluble substance having a hydroxyl group in the molecule, an oil component and a one-phase liquid crystal structure obtained from water. Liquid crystal type oily cosmetics (see Patent Document 6) are disclosed.

  References relating to cleansing cosmetics using alkyl glucosides include makeup cleansers containing polyoxyethylene diesters and alkyl glycosides (see Patent Document 7), cleansing cosmetics containing polyoxyethylene hydrogenated castor oil fatty acid esters and alkyl glycosides (See Patent Document 8), makeup cleanser containing polyoxyethylene monoester and alkyl glycoside (see Patent Document 9), cleansing cosmetic containing polyoxyethylene glyceryl fatty acid ester and alkyl glycoside (see Patent Document 10), etc. Is disclosed.

  References on cleansing cosmetics using maltitol ether include makeup cleansers containing polyoxyethylene monoester and maltitol ether (see Patent Document 11), polyoxyethylene hydrogenated castor oil fatty acid ester and maltitol ether Cleansing cosmetics (see Patent Document 12) and the like are disclosed.

Japanese Patent No. 297568 Japanese Patent No. 3360341 Japanese Patent Laid-Open No. 11-92359 JP 2003-104843 A JP 2005-2047 A Japanese Patent Publication No. 1-53845 JP-A-7-215819 Japanese Patent Laid-Open No. 7-304632 JP-A-7-291830 Japanese Patent Laid-Open No. 7-291831 Japanese Patent Laid-Open No. 7-291828 JP 7-291829 A

  Oil-based cleansing cosmetics have the highest characteristics of having a high affinity for oil stains such as make-up and excellent cleansing function, and are pointed out that they can be used quickly in a washroom or bathroom. Yes. However, since it is a formulation system mainly composed of oil, improvement is desired in terms of its oily feeling and being easy to flow off from the finger. This type requires a clean face because of its oily feel.

  Liquid crystal gel cleansing cosmetics are excellent in cleansing function, have no oiliness, and can be washed away. However, since this type is mainly composed of a hydrophilic nonionic surfactant, it is necessary to select a safe one in terms of skin irritation. Since cleansing cosmetics using alkylglycosides are used in combination with hydrophilic nonionic surfactants, it is necessary to consider in terms of safety as well.

  In the present invention, cleansing cosmetics that are safe and show a mild action on the skin, are well-fitted with oil stains, have an excellent makeup-removing effect, and can be removed cleanly after washing. The method of providing was intensively studied.

As a result of researches to solve the above problems, the present inventor has found that the following components (A), (B), (C) and (D)
(A) Alkyl glucoside (B) One or more selected from liquid to pasty nonionic surfactants at room temperature having an HLB value of 4.0 to 9.5 (C) Fatty acid liquid at room temperature Or a cleansing cosmetic comprising a water-soluble polymer selected from the group consisting of a salt (D) cross-linked polyacrylic polymer, a cellulose polymer, and a polysaccharide polymer. It has been found that these problems can be solved by using it, and the present invention has been completed.

  The cleansing cosmetic composition of the present invention is well-suited to oil, has an excellent makeup-removing effect, and can achieve an ideal usability that allows it to be removed cleanly after rinsing without a feeling of sliminess. Furthermore, it is gentle on the skin and provides a comfortable feeling to use.

  An embodiment of the present invention will be described.

  The alkyl glucoside (A) used in the present invention has the general formula RO- (Glc) n (R: linear and branched alkyl group having 8 to 16 carbon atoms, Glc: α- or β-glucose, n: 1 ) Can be used. Of these, alkyl glucosides having an alkyl chain of 12 to 14 carbon atoms are desirable, and specific examples include lauryl glucoside and myristyl glucoside. These may be used alone or in combination. These are preferable not only from the effect of removing makeup stains, but also from the refreshing and foaming aspects, and provide a feeling of use close to that of a cleaning agent.

  Although it does not specifically limit as a compounding quantity of (A) alkyl glucoside used for this invention, Preferably, 8-30 mass% can be used with respect to cleansing cosmetics whole quantity. If it is less than 8% by mass, sufficient effects may not be exhibited in terms of oil affinity, cleansing power and foaming properties. If it exceeds 30% by mass, the resistance during cleansing will be strong and the elongation to the skin will be heavy. It tends to be difficult to use, and the slimy feeling becomes uncomfortable after washing. A particularly preferable range is 10 to 25% by mass.

  As the nonionic surfactant (B) used in the present invention, a nonionic surfactant having an HLB value of 4.0 to 9.5 and exhibiting a paste from a liquid at normal temperature can be used. Non-ionic surfactants in liquid to paste form at normal temperature having an HLB value of 4.0 to 9.5 include sorbitan monolaurate, sorbitan monooleate, sorbitan monoisostearate, polyoxyethylene tetraoleate (6) Sorbitan, polyoxyethylene (5) glyceryl monooleate, glyceryl isostearate, polyoxyethylene (3) glyceryl isostearate, polyoxyethylene (isostearate) (5) glyceryl, polyoxyethylene (isostearate) (6) glyceryl, polyisostearate And oxyethylene (8) glyceryl. Among these, sorbitan monoisostearate, glyceryl isostearate, polyoxyethylene (3) glyceryl isostearate, and polyoxyethylene (5) glyceryl isostearate having an HLB value of 4.0 to 7.5 are particularly preferable. Since these nonionic surfactants exhibit relatively lipophilic properties, cleansing cosmetics that have good affinity with oil stains, are mild and mild to the skin, and are excellent in safety. can get. As for the HLB value, when the HLB value exceeds 9.5, the hydrophilicity is strong, so that the affinity with oil stains is lowered and a satisfactory cleansing function tends not to be exhibited. On the other hand, when the HLB value is less than 4.0, rinsing at the time of rinsing is worsened, and a refreshing feeling of use cannot be obtained.

  The blending amount of the nonionic surfactant that is liquid to paste-like at room temperature of (B) HLB value 4.0 to 9.5 used in the present invention is not particularly limited, but is preferably the total amount of cleansing cosmetic. On the other hand, 3.5 to 20% by mass can be used. If the amount is less than 3.5% by mass, a sufficient cleansing function may not be exhibited. If the amount exceeds 20% by mass, the elongation becomes heavy and the tendency to feel slimy is observed. A particularly preferable range is 5 to 15% by mass.

  As the fatty acid or salt thereof that is liquid at room temperature (C) used in the present invention, the fatty acid may be one or more selected from isostearic acid, isopalmitic acid, and oleic acid. These are effective even when used in a free state, but when used in the form of their salts, so-called soap, there is a suitable foaming when washed away, and a refreshing feeling after washing is obtained. It is done. In addition, when a linear fatty acid or a salt thereof that is solid at room temperature such as stearic acid or myristic acid is used, the same effect as the component (C) can be obtained at the time of washing or after use. It is not preferable in terms of stability of the preparation and ease of production. Examples of the base include sodium, potassium, ammonium, alkanolamine, 2-amino-2-methyl-1-propanol, 2-amino-2-methyl-1,3-propanediol, basic amino acid and the like.

  (C) Although it does not specifically limit as the compounding quantity of the fatty acid which is liquid at normal temperature used for this invention, or its alkali metal salt, Preferably, 0.3-10 mass% is used with respect to cleansing cosmetics whole quantity. Can do. If it is less than 0.3% by mass, a refreshing feeling after washing away cannot be obtained, and the slimy feeling due to the components (A) and (B) may be a concern. Even if it exceeds 10% by mass, no further effect can be expected in the cleansing function, and the affinity with oil stains tends to decrease. A particularly preferable range is 0.5 to 8% by mass.

  Examples of (D) cross-linked polyacrylic polymer compound, cellulose polymer material, and polysaccharide polymer material used in the present invention include the following. The cross-linked polyacrylic polymer compound is preferably a carboxyvinyl polymer or an alkyl-modified carboxyvinyl polymer, an acrylic acid / alkyl methacrylate copolymer. As the cellulosic polymer substance, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, carboxymethyl cellulose sodium and the like can be used. As the polysaccharide polymer substance, xanthan gum, pullulan, guar gum, water-soluble starch and the like can be used. Among these, carboxyvinyl polymer, acrylic acid / alkyl methacrylate copolymer, which is a cross-linked polyacrylic polymer compound, and xanthan gum which is a polysaccharide polymer substance are particularly preferable. The carboxyvinyl polymer may be unneutralized or neutralized. These are also preferable in that the fluidity of the cleansing cosmetic itself can be freely controlled without impairing the usability.

  The blending amount of the (D) cross-linked polyacrylic polymer compound, cellulosic polymer material, and polysaccharide polymer material used in the present invention is not particularly limited, but is preferably 0. 0 to the total amount of cleansing cosmetic. 03-4 mass% can be used. If it is less than 0.03% by mass, the fluidity may be high, and it may not be satisfactory in that it tends to flow down from a finger or hand during use. If it exceeds 4% by mass, the fluidity tends to decrease and it is difficult to use. A range of 0.05 to 3% by mass is particularly preferable.

  The cleansing cosmetic composition of the present invention includes (A) an alkyl glucoside as an essential component, (B) a nonionic surfactant, (C) a fatty acid which is liquid at normal temperature, or an alkali metal salt thereof, (D) a crosslinked type. In addition to a water-soluble polymer material selected from the group consisting of polyacrylic polymer compounds, cellulose polymer materials, and polysaccharide polymer materials, as long as the effects of the product of the present invention are not impaired, Other ingredients in quasi-drugs, such as fats and oils, other surfactants, moisturizers, inorganic powders, organic powders, UV absorbers, pH adjusters, chelating agents, drugs, fragrances, resins, other alcohols Etc. can be appropriately blended as necessary.

  EXAMPLES Next, although an Example demonstrates this invention further in detail, the cleansing cosmetics of this invention are not limited to these.

  Table 1 shows Examples 1 and 2 of the cleansing cosmetic of the present invention. Comparative examples 1-7 are shown as the comparison. The evaluation results are also shown in Table 1.

  The evaluation method and evaluation criteria are as follows. For the items (1) to (3) of the sensory evaluation test, the test was conducted by 10 dedicated panelists, and 8 or more of them were recognized as good. A case where 4 to 7 persons are recognized as good is Δ, and a case where the number is less than that is ×. Regarding the stability of (4), storage is observed for one week at room temperature, 40 ° C., and 5 ° C., and the state after one week shows no change, and the appearance shows a slight change. △, and the thing by which separation and aggregation were observed is set as x.

Production method:
Dissolve components 9, 10 in a portion of 14 purified water. Components 1 to 8 are sequentially added to the mixture, and the mixture is homogenized. Then, the remaining components 11 to 14 are added and the mixture is homogenized.

  As shown in Table 1, the cleansing cosmetics of the examples are superior to the comparative examples in all points of good affinity for oil stains, ease of washing, and feeling after washing. confirmed.

  Hereinafter, other examples of the present invention will be described.

[Example 3] Emulsion type cleansing cosmetic 1. Lauryl glucoside 20.0 (mass%)
2. Glyceryl isostearate <HLB value 4.0> 10.0
3. Isostearic acid 1.0
4). Oleic acid 1.0
5. 2-Amino-2-methyl-1-propanol 0.8
6). Acrylic acid / alkyl methacrylate copolymer 0.3
7). Glycerin 10.0
8.1,3-Butylene glycol 5.0
9. Methyl paraoxybenzoate 0.1
10. Purified water 51.7
11. Fragrance 0.1
Production method:
Dissolve component 6 in a portion of 10 purified water. Ingredients 1-5 are sequentially added to this and mixed and homogenized, and then the remaining ingredients 7-11 are added and mixed.

[Example 4] Cream type cleansing cosmetic 1. Lauryl glucoside 22.0 (mass%)
2. Polyoxyethylene isostearate (5)
Glyceryl <HLB value 7.0> 2.0
3. Glyceryl isostearate <HLB value 4.0> 10.0
4). Isostearic acid 2.0
5. L-Arginine 1.5
6). Carboxyvinyl polymer 0.6
7.1,3-Butylene glycol 15.0
8). Methyl paraoxybenzoate 0.1
9. Purified water 46.7
10. Fragrance 0.1
Production method:
Ingredient 6 is dissolved in a portion of 9 purified water. Components 1 to 5 are sequentially added to the mixture and mixed and homogenized, and then the remaining components 7 to 10 are added and mixed and homogenized.

[Example 5] Emulsion type cleansing cosmetic 1. Lauryl glucoside 15.0 (mass%)
2. Myristyl glucoside 5.0
3. Sorbitan monoisostearate <HLB value 5.0> 10.0
4). Isostearic acid 1.0
5. 2-Amino-2-methyl-1-propanol 0.5
6). Xanthan gum 0.2
7.1,3-Butylene glycol 10.0
8). Methyl paraoxybenzoate 0.1
9. Purified water 58.1
10. Fragrance 0.1
Production method:
Ingredient 6 is dissolved in a portion of 9 purified water. Components 1 to 5 are sequentially added to the mixture and mixed and homogenized, and then the remaining components 7 to 10 are added and mixed and homogenized.

  The cleansing cosmetics of the present invention also have the characteristics of the present invention, the familiarity with the oil, the makeup removal effect, which is the characteristic of the present invention. It was confirmed that it could be dropped.

Claims (3)

The following components (A), (B), (C) and (D)
(A) Alkyl glucoside whose alkyl group has 8 to 16 carbon atoms 10 to 25% by mass
(B) One or more selected from liquid to paste-like nonionic surfactants at room temperature having an HLB value of 4.0 to 9.5 5 to 15% by mass
(C) Fatty acid which is liquid at normal temperature or its salt 0.5-8 mass%
(D) A water-soluble polymer substance selected from the group consisting of a cross-linked polyacrylic polymer compound, a cellulose polymer substance, and a polysaccharide polymer substance 0.05 to 3% by mass
A cleansing cosmetic characterized in that it contains. The cleansing cosmetic according to claim 1, wherein the alkyl glucoside (A) is lauryl glucoside and / or myristyl glucoside. The cleansing cosmetic according to claim 1 or 2, wherein the fatty acid that is liquid at room temperature of (C) is one or more selected from isostearic acid, isopalmitic acid, and oleic acid.