JPH10279430A - Prepack preparation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a prepack preparation with little pain when peeled off the skin, excellent in cleansing effect, esp. cuticle-removing effect by including a keratolytic agent and a water-soluble polymer. SOLUTION: This prepack preparation is obtained by formulating (A) 0.01-10 wt.% of a keratolytic agent, at least one kind of compound selected from lactic acid, papain, bioprase, salicylic acid, glycolic acid, citric acid and malic acid, (B) 0.01-10 wt.% of a natural or (semi)synthetic water-soluble polymer (pref. hydroxyethyl cellulose, hydroxypropylmethyl cellulose or carboxymethylcellulose sodium salt), and (C) as necessary, a surfactant, lubricant, ethanol, polyhydric alcohol, powder, perfume, color, etc. This prepack preparation is applied to the face with finger(s) followed by applying a peel-off type pack preparation thereonto and then peeling the peel-off type pack preparation off the face.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pre-packing agent used before a peel-off type packing agent, and more particularly, to a peel-off type packing agent containing a keratolytic agent and a water-soluble polymer. The present invention relates to a pre-packing agent which reduces pain at the time of peeling off and has an excellent cleaning effect.

[0002]

2. Description of the Related Art Peel-off type packs are prepared by applying a cosmetic having a film-forming agent to the skin at an appropriate thickness, leaving it to dry for a certain period of time, and forming a film.
It is a cosmetic that removes the film from the skin surface. This peel-off type pack agent softens the surface stratum corneum by blocking the moisture evaporating from the skin and the moisture of the pack agent with the pack layer formed of the film forming agent, and further, in the drying process of the film forming agent. Gives appropriate tension to the skin, and after drying, temporarily raises skin temperature and improves blood circulation. After drying, the film is peeled off to remove dirt and aged stratum corneum, sebum, keratin plugs and the like on the skin. Thus, the peel-off type pack is a cosmetic that imparts moisturizing, blood circulation promoting and cleaning effects to the skin.

[0003]

However, when a large amount of a film-forming agent as a main component is incorporated in a peel-off type pack to improve the above-mentioned effects, it is not easy to peel off from the skin after drying. There was a problem that pain was felt at the time of peeling. In addition, the cleaning effect was not sufficient to remove dirt and keratin plugs on the skin surface and pores. In recent years, in order to solve these problems, a prepack has been proposed which is applied to the skin before using a peel-off type pack. As an example, a prepack containing 10% by weight or more of an emollient and a water-soluble polymer (JP-A-2-258713)
No.) and a prepacking agent containing a cationic surfactant (Japanese Patent Application Laid-Open No. Hei 8-59451), but their effects have not been sufficient. Therefore, there has been a demand for the development of a cosmetic composition which has less pain when peeled from the skin and which has an excellent cleaning effect, especially an effect of removing keratotic plugs.

[0004]

In view of the above circumstances, the present inventors have conducted intensive studies and have found that before applying a peel-off type pack, a prepack containing a keratolytic agent and a water-soluble polymer is used. It has been found that by using the composition, it is possible to obtain a cosmetic which has less pain at the time of peeling from the skin and which has an excellent cleaning effect, especially an effect of removing keratotic plugs, and has completed the present invention.

That is, the present invention is a prepack containing a keratolytic agent and a water-soluble polymer. The details will be described below.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The pre-pack preparation of the present invention is used before a peel-off type pack preparation, and the pre-pack preparation is applied to the face with a finger. Thereafter, before the prepacking agent is dried, a peel-off type packing agent is applied thereon, and the peel-off type packing agent is peeled off.

The keratolytic used in the present invention includes:
It is not particularly limited as long as it has the action of decomposing proteins such as proteolytic enzymes and acids, or softening and exfoliating old keratin, specifically, for example, lactic acid, papain, bioprase, salicylic acid, Glycolic acid, citric acid, malic acid and the like can be mentioned, and one or more of these can be used in appropriate combination. Of these, salicylic acid, lactic acid and glycolic acid are preferred.

[0008] The content of the keratolytic agent in the present invention is not particularly limited by the type of keratolytic agent used, but is preferably 0.01 to 10% by weight (hereinafter simply referred to as "%"). , More preferably 0.05 to 5%. If it is less than 0.01%, the keratotic plug removal effect may not be sufficient, and if it is more than 10%, skin irritation may occur.

As the water-soluble polymer used in the present invention, various synthetic, semi-synthetic, and natural water-soluble polymers can be used. For example, carboxyvinyl polymer, methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose,
Hydroxypropylmethylcellulose, carboxymethylcellulose sodium, cationized cellulose, polyvinylpyrrolidone, polyvinyl alcohol, sodium alginate, sodium hyaluronate, pectin, agar, xanthan gum, locust bean gum, tragacanth gum, etc. They can be used in combination. Of these, hydroxyethyl cellulose, hydroxypropyl methyl cellulose and sodium carboxymethyl cellulose are preferred.

In the present invention, the content of the water-soluble polymer is
The type of the water-soluble polymer used is not particularly limited, but is preferably 0.01 to 10%, more preferably 0.1 to 10%.
05 to 5%. If it is less than 0.01% by weight, the effect of removing keratotic plugs may not be sufficient, and if it is more than 10%, it may be difficult to apply and the usability may deteriorate.

The peel-off type pack agent used after the prepack agent of the present invention is not particularly limited as long as it is a commonly used one. Examples of the film-forming agent include polyvinyl alcohol, polyvinyl pyrrolidone and polyvinyl acetate. , Polyethyl acrylate, polybutyl acrylate emulsion, polymethacrylic acid emulsion and the like.

Further, in addition to the essential components, the prepackage of the present invention contains components commonly used in cosmetics, such as surfactants, oils, ethanol, polyhydric alcohols, and the like.
Powders, salts, bases, acids, fragrances, dyes, preservatives, antioxidants, ultraviolet absorbers, vitamins, beauty agents, humectants, and the like can be appropriately selected and used within a range that does not impair the effects of the present invention. .

[0013]

The present invention will be described in more detail with reference to the following examples, which should not be construed as limiting the invention thereto.

Examples 1 to 4 and Comparative Examples 1 to 3 Prepacks having the compositions shown in Table 1 below were prepared and evaluated for pain upon peeling and keratotic plug removal effect.

[0015]

[Table 1]

(Preparation method) A: Component 6 is uniformly dispersed in Component 5. B: Components 1-4, 7 and 8 are mixed and dissolved. C: B was added to A and mixed uniformly to obtain a prepack.

(Evaluation Method) A use test was performed on a professional panel of 10 women. The prepacks shown in Examples and Comparative Examples were applied to one nose and forehead of the face, and nothing was applied to the other nose and forehead. Thereafter, a peel-off type pack having the following composition was applied and dried sufficiently, and then the pack was peeled off. The pain at the time of exfoliation and the keratotic plug removal effect were evaluated on a three-point scale according to the following evaluation criteria, and the average score was determined according to the following criteria.

<Peel-off type pack agent> (Component) (%) Polyvinyl alcohol 15.0 2. Ethyl alcohol 10.0 3.1,3-butylene glycol 5.0 4.0 Titanium oxide 5.0 5. 5. Polyoxyethylene monooleate 0.5 Sorbitan (20EO) Purified water balance

(Preparation method) A: Components 1 and 2 are uniformly mixed. B: Components 3 to 6 are uniformly mixed. C: B was added to A, heated and dissolved at 80 ° C., and then cooled to obtain a peel-off type pack agent.

(Evaluation Criteria) Pain at the time of peeling Pain is less felt when using the pre-packed agent: 3 Slightly less pain is felt when using the pre-packed agent: 2 Neither can be said: 1: Square plug removing effect Pre-packed agent角 方 角 ３ ３ ３ ３ ３ ３ 3 ３ 角 角 ３ ３ ３ ３ ３ ３ ３ ３ ３ ３ ３ ３ ３ ３ ３ ３ ３ ３ ３ ３ ３ ３ ３ ３ ３

(Judgment Criteria) 点: Average score of 2.7 or more ：: Average score of 2.0 or more and less than 2.7 Δ: Average score of 1.5 or more and less than 2.0 ×: Average score of less than 1.5 Are also shown in Table 1.

As is clear from the results shown in Table 1, the examples according to the present invention reduce the pain at the time of peeling of the peel-off type pack agent and provide an excellent cleaning effect, particularly, a keratotic plug removal effect, as compared with the comparative example. Was something.

Example 5 A prepack and a peel-off type pack having the following components were prepared. <Prepacking agent> (Component) (%) Lactic acid 0.5 2. Ethyl alcohol 10.0 3. Dipropylene glycol 3.0 4. Carboxyvinyl polymer 0.2 5. Sodium alginate 0.36. Sodium hydroxide 0.1 7. Preservative appropriate amount 8. Purified water balance

(Preparation method) A: Component 5 is uniformly dispersed in Component 2. B: Add component 4 to part of component 8 and mix. C: Add the residues of components 1, 3, 6, 7 and 8 to B and mix uniformly. D: C was added to A and mixed uniformly to obtain a prepack.

<Peel-off type pack agent> (Components) (%) Polyvinyl alcohol 15.0 2. Ethyl alcohol 10.0 3. Glycerin 2.0 4. Silicic anhydride 3.0 5. Titanium oxide 5.0 6. Polyoxyethylene alkyl ether phosphoric acid 0.57. Preservative appropriate amount 8. Appropriate amount of flavor 9. Purified water balance

(Manufacturing method) A: Components 3 to 7 are added to Component 9 and mixed uniformly. B: Add Component 2 to Component 1 and mix uniformly. C: Add A to B, heat to 80 ° C., dissolve and cool. D: Component 8 was added to and mixed with C to obtain a peel-off type pack agent. In Example 5, the pain at the time of peeling of the peel-off type pack was reduced, and an excellent cleaning effect, particularly an excellent keratotic plug removal effect, was obtained.

Example 6 A prepack and a peel-off type pack having the following compositions were prepared. <Prepack agent> (Components) (%) 1. Polyoxyethylene monoisostearate 0.2 hydrogenated castor oil (50 EO) 2. Glycerin tri-2-ethylhexanoate 0.05 Ethyl alcohol 18.0 4. Glycerin 2.0 5. Malic acid 0.56. Sodium carboxymethylcellulose 1.0 7. Appropriate amount of flavor 8. Purified water balance

(Preparation method) A: Components 1 to 3 and 7 are uniformly dissolved. B: Add component 6 to A and disperse uniformly. C: Components 4, 5 and 8 are uniformly mixed. D: C was added to B and mixed to obtain a prepack agent.

<Peel-off type pack agent> (Components) (%) Polyvinyl alcohol 13.0 2. 2. Polyvinylpyrrolidone 2.0 Ethyl alcohol 10.0 4.1 1,3-butylene glycol 3.0 5.0 Silicic anhydride 1.5 6. Preservative appropriate amount 7. Appropriate amount of flavor 8. Purified water balance

(Preparation method) A: Components 4 to 6 are added to Component 8, and mixed uniformly. B: Components 1 to 3 are uniformly mixed. C: Add A to B, heat to 80 ° C., cool after dissolution. D: Component 7 was added to and mixed with C to obtain a peel-off type pack agent. In Example 6, the pain at the time of peeling off the peel-off type pack was reduced, and an excellent cleaning effect, particularly an excellent keratotic plug removal effect, was obtained.

[0031]

As described above in detail, the pre-pack preparation of the present invention has reduced pain at the time of peeling of the peel-off type pack preparation, and has excellent cleaning effect, especially excellent keratotic plug removal effect. .

Claims (2)

[Claims] 1. A prepack comprising a keratolytic agent and a water-soluble polymer. 2. The prepack preparation according to claim 1, wherein the keratolytic agent is one or more selected from lactic acid, papain, bioprase, salicylic acid, glycolic acid, citric acid and malic acid.