JP4782634B2 - Aerosol pack cosmetic - Google Patents

Description

  The present invention relates to an aerosol-type pack cosmetic that is creamy, easily applied to the skin, and that gives a moist feel to the skin even after washing.

  Aerosol-type pack cosmetics are included in the composition that blocks the skin and the outside air by applying the foamed cosmetics to the skin, raises the skin temperature, promotes the metabolism of the skin, and so on. Has the effect of promoting penetration of active ingredients. Foam quality and physical properties are regarded as important in aerosol-type pack cosmetics. When the foam is rough and the retaining property is insufficient, it is difficult to apply to the skin, and the barrier property against the outside air is impaired. Furthermore, a bubble-like touch that allows bubbles to pop on the skin may be felt as irritation, which is not preferable.

Various studies have been conducted in view of such problems. For example, an aerosol-type foam pack cosmetic (see Patent Document 1) combining an acyl amino acid salt, a sugar alcohol, and a water-soluble polysaccharide, and a foam-forming cosmetic (see Patent Document 2) containing xanthan gum and quince seed extract. It is done.
JP 2002-161022 A JP 2005-15405 A

  However, although these aerosol-type pack cosmetics have improved foam quality, the stickiness of the polysaccharide may remain after the pack is wiped off or washed away.

  Accordingly, an object of the present invention is to provide an aerosol-type pack cosmetic that is creamy foam, easy to apply to the skin, and gives a moist feel to the skin even after washing.

  As a result of intensive studies to solve the above problems, the present inventor has developed an aerosol type pack cosmetic containing a specific surfactant, a polyhydric alcohol, a water-soluble polymer, and a silicone oil. As a result, the present invention has been completed.

  That is, claim 1 of the present invention is a stock solution containing (A) an acylamino acid type surfactant, (B) a polyhydric alcohol, (C) a water-soluble polymer, and (D) a silicone oil, and a propellant. It is an aerosol type pack cosmetic composition characterized by comprising.

  The second aspect of the present invention is the aerosol type pack cosmetic according to the first aspect, wherein the water-soluble polymer (C) is polyvinylpyrrolidone.

  The present invention provides an aerosol-type pack cosmetic that is creamy foam, easy to apply to the skin, and gives a moist feel to the skin even after washing.

  Hereinafter, the configuration of the present invention will be described in detail.

The (A) acylamino acid type surfactant in the present invention is, for example, coconut oil fatty acid methyl-
β-alanine sodium, lauroylmethyl-β-alanine sodium, coconut oil fatty acid methyl-β-alanine triethanolamine, N-acyl-β-alanine salts such as lauroylmethyl-β-alanine triethanolamine, coconut oil fatty acid sarcosine sodium N-acyl sarcosine salts such as sodium lauryl sarcosine, coconut oil fatty acid sarcosine triethanolamine, lauryl sarcosine triethanolamine, sodium N-cocoyl-L-glutamate, sodium N-lauroyl-L-glutamate, N-myristoyl-L- Sodium glutamate, N-cocoyl-L-glutamic acid triethanolamine, N-lauroyl-L-glutamic acid triethanolamine, N-myristoyl-L-glutamic acid triethanolamine, etc. N-acyl glutamate, other N-acylmethyl taurine salts, N-acyl glycine salts, and the like. Among these, one or two or more of these can be blended.

  Among these acylamino acid type surfactants, N-acyl glutamate is preferable in terms of foam creaminess, and sodium N-stearoyl-L-glutamate is particularly preferable.

  A preferred blending amount of the (A) acylamino acid type surfactant in the present invention is 0.01 to 2.0% by mass (hereinafter simply referred to as “%”), particularly preferably 0.05 to 1.0%. It is. If the blending amount of the acylamino acid type surfactant is less than 0.01%, foam creamy may not be obtained. If the blending amount exceeds 2.0%, the foam becomes too hard and is applied to the skin. It may be difficult.

  The (B) polyhydric alcohol in the present invention is not particularly limited as long as it has two or more hydroxyl groups in the molecular structure and is usually used in cosmetics. For example, glycerin, polyglycerin, propylene glycol, polypropylene glycol, Polyethylene glycol (with a molecular weight of less than 1000), butylene glycol, sorbitol and the like can be mentioned, and one or more of these can be blended.

  A preferable blending amount of the (B) polyhydric alcohol in the present invention is 5.0 to 50.0%, particularly preferably 10.0 to 30.0%. If the blending amount of the polyhydric alcohol is less than 5.0%, the moist feeling after washing may be impaired, and if the blending amount exceeds 50.0%, the foam becomes too hard to be applied to the skin. There is a case.

  (C) water-soluble polymer in the present invention is guar gum, roast bean gum, queen seed, carrageenan, galactan, gum arabic, tragacanth, pectin, mannan, starch, xanthan gum, dextrin, succinoglucan, curdlan, gelatin, Casein, albumin, collagen, methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose, methyl hydroxypropyl cellulose, soluble starch, carboxymethyl starch, methyl starch, propylene glycol alginate, alginate, polyvinyl alcohol, polyvinyl pyrrolidone, polyvinyl methyl Ether, carboxyvinyl polymer, sodium polyacrylate, polyethylene Glycol (molecular weight 1000 or more), ethylene oxide / propylene oxide block copolymer, cationized cellulose, chondroitin sodium sulfate, sodium hyaluronate and the like can be mentioned, and one or a combination of two or more of these can be blended. .

  Among these water-soluble polymers, polyvinyl pyrrolidone is excellent in terms of foam creaminess and moist feeling after washing, and polyvinyl pyrrolidone having a weight average molecular weight of 50,000 to 500,000 by viscosity measurement is particularly preferred.

  A preferred blending amount of the water-soluble polymer (C) in the present invention is 0.01 to 2.0%, particularly preferably 0.1 to 1.0%. If the blending amount is less than 0.01%, the creaminess of the foam may be impaired. If the blending amount exceeds 2.0%, the foam may become too hard to be applied to the skin.

  The (D) silicone oil in the present invention is, for example, dimethylpolysiloxane, methylphenylpolysiloxane, epoxy-modified silicone, fluorine-modified silicone, alcohol-modified silicone, alkyl-modified silicone, alkoxy-modified silicone, amino-modified silicone, perfluoroalkylpolyoxy Examples include alkylene-modified silicones and cyclic silicones, and one or more of these can be added in combination.

  A preferred blending amount of the (D) silicone oil in the present invention is 0.01 to 3.0%, particularly preferably 0.1 to 1.0%. If the blending amount is less than 0.01, the moist feeling after washing off may be impaired, and if the blending amount exceeds 3.0%, the foam creaminess may be impaired.

  The aerosol-type pack cosmetic of the present invention is made into an aerosol agent by filling a pressure-resistant container with a stock solution containing the above essential components and mixing a propellant. Examples of the propellant include liquefied petroleum gas such as propane, isobutane and normal butane, liquefied gas such as dimethyl ether, carbon dioxide gas, nitrogen gas and oxygen gas.

  In the aerosol type pack cosmetics of the present invention, surfactants (excluding acylamino acid type surfactants) and oily components (excluding silicone oils) are included in addition to the above essential components as long as the effects of the invention are not impaired. Water-soluble silicone compounds, higher alcohols, lower alcohols, powders, plant extracts, preservatives, bactericides, chelating agents, antioxidants, pH adjusters, ultraviolet absorbers, fragrances and the like can be blended.

  Hereinafter, the present invention will be described with reference to examples and comparative examples. However, the present invention is not limited to these.

  Test methods for physical property tests and sensory tests shown in Examples and Comparative Examples are as follows. In addition, the compounding quantity of the composition shown in the following table | surfaces is each shown by%.

(1) Creaminess of foam A sample of an aerosol-type pack cosmetic was adjusted to 25 ° C, and about 100 mL of foam was jetted into a beaker. The foam was measured with a B-type viscometer (rotor No. 4, rotation speed 12 rpm). The higher the viscosity, the more creamy.

(2) Sensory test An aerosol-type pack cosmetic sample was applied to the cheek site by 10 subjects. Packing was continued for 3 minutes after application, and rinsed off with warm water. Thereafter, the subject himself performed sensory evaluation on the ease of applying foam and the moist feeling of washing, and obtained an average evaluation score. The evaluation criteria are as follows.

4: Very good 3: Good 2: Slightly bad 1: Bad

A: Average evaluation score of 3.4 or more ○: Average evaluation score of 2.8 or more, less than 3.4 Δ: Average evaluation score of 2.2 or more, less than 2.8 ×: Average evaluation score of less than 2.2

Examples 1-2 and Comparative Examples 1-5
Aerosol-type pack cosmetics having the formulations shown in Table 1 were prepared by conventional methods, and the above tests were performed. The results are also shown in Table 1.

  As is clear from Table 1, all of the aerosol type pack cosmetics of Examples using the components of the present invention had excellent performance. On the other hand, the comparative example lacking any of the essential components was inferior in any aspect of foam creaminess, ease of application, and moist feeling, and the object of the present invention could not be achieved. Especially in the comparative example, the aerosol type pack cosmetic containing the D component silicone oil could not satisfy the creaminess of the foam due to the defoaming action by the silicone oil, but in the examples, the silicone oil was blended. Even in the case, it was possible to satisfy the creaminess of the foam.

Example 3
Stock solution (A) Sodium N-stearoyl-L-glutamate 0.5%
Stearic acid 0.8
Stearyl alcohol 0.5
Polyoxyethylene hydrogenated castor oil (60 EO) 0.3
Polyoxyethylene cetyl ether (5EO) 0.5
(B) Dipropylene glycol 10.0
(B) 1,3-butylene glycol 5.0
(C) Polyvinylpyrrolidone (weight average molecular weight 400000) 0.2
(C) Hydroxyethyl cellulose 0.1
(D) Dimethylpolysiloxane (100 cs) 0.5
Triethanolamine 0.2
Edetic acid disodium 0.02
Chimp extract 0.1
Phenoxyethanol 0.2
Dipotassium glycyrrhizinate 0.1
Fragrance 0.2
Purified water balance aerosol agent undiluted solution 94.0%
Liquefied petroleum gas (0.35 MPa, 25 ° C.) 6.0

  When an aerosol type pack cosmetic having the above composition was prepared and evaluated, it had excellent performance in terms of foam creaminess, ease of application, and moist feeling.

  Table 2 shows the composition of the fragrance used in Example 3 above.

Claims (2)

An aerosol type pack cosmetic comprising a stock solution containing the following (A) to (D) and a propellant.
(A) Acylamino acid type surfactant (B) Polyhydric alcohol (C) Polyvinylpyrrolidone (D) Silicone oil The weight average molecular weight of said (C) polyvinylpyrrolidone is 50000-500000, The aerosol type pack cosmetics of Claim 1 characterized by the above-mentioned.