JP2805632B2 - Prepack agent - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a prepack containing 10% by weight or more of an emollient and a water-soluble polymer, and more particularly to a use before a film-forming pack. And a skin external preparation.

[Prior art] Compared with a pack agent which does not form a film after drying, a film-forming pack agent allows moisture evaporating from the skin surface to remain under the pack layer due to a shielding effect of the pack,
As a result, the surface stratum corneum is softened and at the same time the pores are expanded,
It improves the permeability of the pack agent to dirt clogged in pores, and exerts a cleaning effect by peeling off after drying.

However, film-forming packs are not easy to peel off from the skin after drying due to the strength of the film,
It was even painful. Also, in terms of effect,
It was not enough to remove horn plugs and dirt from pores.

[Problems to be Solved by the Invention] The present inventor has been keen to solve the drawbacks of the above-mentioned conventional film-forming pack agents: (1) when peeling off from the skin; and (2) insufficient cleaning effect. As a result of the research, we have obtained a new finding that the intended purpose can be achieved for the first time by using an external preparation for skin containing a softening agent and a water-soluble polymer before a film-forming pack.

[Means for Solving the Problems] That is, the present invention is a prepacking agent characterized by blending 10% by weight or more of a film softener and a water-soluble polymer.

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

The prepacking agent of the present invention is used before the film-forming type packing agent, and is used, for example, by applying the prepacking agent to the face, leaving it for a while, and then gently wiping it. Thereafter, a film-forming pack is applied thereon and the film-forming pack is peeled off without pain, and the skin becomes moist even after peeling.

Specific examples of the emollient used in the present invention include, for example, _C2-9 alkylene glycols such as ethylene glycol, propylene glycol, butylene glycol, pentylene glycol, and hexylene glycol; and aliphatic triols such as glycerol. , diethylene glycol, dipropylene glycol, diethylene glycol alkylene glycols and derivatives thereof having a C _{2 to 4} alkylene monomethyl ether, polyethylene glycol, polypropylene glycol, _{C. 2 to} block or random copolymers of ethylene oxide and propylene oxide polyalkylene oxides and derivatives thereof having a ₄ alkylene and monovinyl ether of a copolymer of ethylene oxide and propylene oxide, poly Butyl monoether Ji alkylene oxide, poly (ethyleneoxy add - propylene oxide) glycerol adduct, one polyalkylene oxides having a C ₁ -C ₅ ethers such as glycerol adduct of polypropylene oxide or two or more may be used.

Among them, as the alkylene glycols, ethylene glycol, propylene glycol or hexylene glycol, as the aliphatic triols, glycerol, as the dialkylene glycols, diethylene glycol or dipropylene glycol, as a derivative thereof,
Diethylene glycol monomethyl ether or diethylene glycol monoethyl ether, as polyalkylene oxides, polyethylene glycol -200, -3
00, -400, -600 (average molecular weight), polypropylene glycol -200 to -1200 (average molecular weight), block copolymers of ethylene oxide and propylene oxide, and derivatives thereof include those of ethylene oxide and propylene oxide copolymer. Butyl ether is preferably used.

The content of these emollients is 10% by weight or more, preferably 50% by weight or more, and more preferably 90% by weight or more. If it is less than 10% by weight, it is not preferable in terms of effect. When the content is 90% by weight or more, a heating effect is also exerted, the softening effect of the skin is enhanced, and sebum clogging of pores becomes softer due to a rise in temperature, which is preferable.

Specific examples of the water-soluble polymer used in the present invention,
Polyacrylic acid, sodium polyacrylate, hyaluronic acid, sodium hyaluronate, sodium chondroitin sulfate, mucopolysaccharide of chitinic acid, carboxyvinyl polymer, sodium alginate, ammonium alginate, sodium carboxymethylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, Hydroxypropylethylcellulose, methylcellulose, soluble starch, carboxymethylamylose, dextrin, pectin,
Hexcellulose such as agar powder, and plant gums such as gum arabic, tragacanth, and xanthan gum.

The amount of the water-soluble polymer used in the present invention is 0.01 to
5% by weight is preferred. If it is less than 0.01% by weight, the effect of eliminating pain at the time of peeling is small, and if it exceeds 5% by weight, a film is formed and it is difficult to exert a cleaning effect.

The film-forming pack used after the prepack of the present invention is not particularly limited as long as it is a usual one. Examples of the film-forming agent include polyvinyl alcohol, polyvinylpyrrolidone, polyacrylic acid, sodium polyacrylate, and methoxy. Ethylene maleic anhydride copolymer, methacrylic acid polymer, acrylic acid / styrene copolymer, acrylic acid / methacrylamide copolymer, butyl acrylate / methacrylic acid copolymer, styrene / methacrylic acid copolymer, carboxy Vinyl polymer, sodium alginate, ammonium alginate, sodium carboxymethylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylethylcellulose, methylcellulose, soluble starch , Carboxymethyl amylose, dextrin, pectin, hemicellulose agar powder, etc., gum arabic, tragacanth, vegetable gum such as xanthan gum.

The prepacking agent of the present invention includes, as necessary, animal mineral oil or ester oil, triglyceride or higher fatty acid, higher alcohol, straight-chain, branched, within a quantitative and qualitative range that does not impair the effects of the present invention. Oily components such as cyclic silicones, lower alcohols such as ethanol, natural extracts such as lecithin and carrot extract, sugars, sugar alcohols, other sugar derivatives, humectants such as pyrrolidone carboxylic acid, thickeners such as clay minerals , Preservatives and fungicides, surfactants,
Antioxidants, sequestering agents, ultraviolet absorbers, inorganic or organic powders, pigments, medicinal ingredients, pigments, fragrances, and the like can be added.

[Effects of the Invention] By using the prepack agent of the present invention, it is possible to solve the drawbacks of the film-forming pack agent: (1) when peeling from the skin, and (2) insufficient cleaning effect. That is, when the pre-packing agent of the present invention is used before the film-forming type pack, there is no pain when the film-forming type pack is peeled off, and a sufficient cleaning effect can be obtained.

[Examples] Next, in order to further understand the present invention, examples will be described in more detail. The present invention is not limited by this. In addition, the compounding amount is weight%. Prior to the examples, the effect test method and the evaluation method of the present invention will be described below.

The pre-pack was applied to the face of 68 female panels aged 18 to 35 years, left to stand for a while, then gently wiped, and then the film-forming pack was applied thereon. Pain at the time of peeling, moist feeling after use, keratin plugs (sebum clogged in pores) and how to remove dirt were determined according to the following criteria.

Pain during peeling ◎… More than 45 people do not feel pain ○… More than 35 people do not feel pain △… More than 15 people do not feel pain ×… less than 15 people do not feel pain Moist after peeling ◎… More than 45 people feel moisturized ○… More than 35 people feel moisturized △… More than 15 people feel moisturized ×… No more than 15 people do not feel moisturizing Cleaning effect ◎… More than 45 people Respondents who have a cleaning effect ○… More than 35 people answered that they have a cleaning effect △… More than 15 people answered that they have a cleaning effect ×… Less than 15 people who answered that they have a cleaning effect 1. Comparative Examples 1 and 2 After applying the prepacks shown in Table 1, a film-forming pack was applied, and the pain at the time of peeling and the cleaning effect were evaluated. Table 2 shows the results.

Film-forming pack agent Polyvinyl alcohol 15 Glycerin 2 Ethanol 5 Preservatives proper amount Vitamin C derivative proper amount Perfume proper amount Purified water residue As is evident from Table 2, the use of the prepack agent of the present invention gave excellent moistening after use, no pain at the time of peeling, and an excellent effect of removing plugs and dirt.

Example 2 Prepacking agent Glycerin 50.0 1,3-butylene glycol 48.0 Xanthan gum 0.5 L-Ascorbic acid-2-sodium sulfate 0.2 Purified water Residue Film-forming packing agent Polyvinyl alcohol 12 Vinyl acetate emulsion 12 Carboxymethylcellulose 10 Nylon powder 5 Preservative Appropriate amount Placenta extract qs purified water residue Example 3 Prepack agent high molecular weight silicone (molecular weight 6,000) 10.0 organic silicone resin 5.0 dimethyl polysiloxane (5cs) 22.5 squalane 5.0 vitamin E acetate 0.1 glycerin 25.0 1,3-butylene glycol 25.0 sodium hyaluronate 0.05 Polyoxyethylene (100 mol addition) Hardened castor oil 2.5 Vitamin C derivative Appropriate amount Purified water Residue Film forming pack agent Polyvinyl alcohol 12 Vinyl acetate emulsion 10 Polyethylene glycol Coal 1000 5 Ethanol 5 Preservatives Appropriate amount Placenta extract Appropriate amount Purified water Residue After applying the pre-packing agents of Examples 2 and 3, use a film-forming type packing agent to make it moist after use and no damage at the time of peeling. It was excellent in removing horns and dirt.

Claims (1)

(57) [Claims] (1) A pre-pack preparation comprising 10% by weight or more of an emollient and a water-soluble polymer.