JP3468627B2 - Peel-off type pack cosmetics - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a peel-off type pack cosmetic containing a high molecular compound as a film forming agent, and more specifically, it is a phospholipid-blended cosmetic mainly for the purpose of removing keratin plugs and stains on the skin surface.・ Peel-off type pack cosmetics for removing corneal plugs, which are excellent in removing sebum etc.

[0002]

2. Description of the Related Art Conventionally, peel-off type pack cosmetics using a polymer compound as a film forming agent removes skin oils on the face, stains such as wastes, aged stratum corneum, the rest of makeup cosmetics, etc. It was intended to promote. In recent years, the removal of sebum stains in pores has attracted new attention as its purpose of use, and in particular, various peel-off pack cosmetics whose main purpose is to remove keratin plugs clogged in pores have been investigated. , Actually appearing in the market. These peel-off type pack cosmetics have the main purpose of removing stains on the skin of the face and promoting metabolism,
A distinction is made in the market from conventional peel-off type pack cosmetics having a mild effect. However, in order to remove dirt such as keratin plugs clogged in pores, a strong adsorption force for keratin plugs of the pack type is required,
The current situation is that sufficient effects have not been realized. In order to improve the adsorptive power, for example, a method of hardening the pack-type film itself, a method of incorporating a clay mineral, or
Attempts have been made for two-pack type cosmetics in which an essence that enhances the adsorption effect is first applied to a portion to be packed, and then a packing agent is applied thereon.

[0003]

However, one of the drawbacks commonly seen in such attempts is that the adsorption power to the keratin plug is improved and at the same time the adsorption power to the skin is strengthened, and skin irritation, especially This means that the pain when peeling off the pack will be increased. Therefore, it has been desired to develop a peel-off type pack cosmetic for keratin plug removal, which improves the adsorption power to the keratin plug and effectively removes it, and has a mild action on the skin.

[0004]

Means for Solving the Problems As a result of intensive studies to improve the above-mentioned problems of the prior art, the present inventor blended a phospholipid into a peel-off type pack cosmetic containing a polymer compound as a film forming agent. As a result, they have found that the keratin plug clogged in the pores can be effectively removed without causing pain during peeling, and completed the present invention. That is, the present invention is
A film-forming agent containing at least polyvinyl alcohol and a phospholipid ( excluding lysophospholipid ) are mixed (however,
The present invention provides a peel-off type pack cosmetic for keratin plug removal, which is characterized by containing xanthine and highly unsaturated fatty acid .

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION As the film forming agent used in the peel-off type pack cosmetic of the present invention, a high molecular compound as a film forming agent usually used in pack cosmetics can be used, and polyvinyl alcohol, polyvinylpyrrolidone, poly Examples thereof include vinyl acetate emulsion, carboxymethyl cellulose, calcium alginate, and the like, and particularly those using polyvinyl alcohol show remarkable effects. The film-forming agent may be used alone or in combination of two or more.

The amount of the film-forming agent mixed is preferably 5 to 30% by weight (hereinafter simply referred to as "%"), though there are some differences depending on the type of the film-forming agent. When the amount of the film-forming agent is 10 to 20%, the hardness of the film formed is more suitable, it is easy to apply, and there is no pain during peeling, which is more preferable.

The phospholipids used in the present invention include phosphatidylcholine, phosphatidylethanolamine,
Examples thereof include phosphatidylinositol, soybean phospholipid, egg yolk phospholipid as a mixture thereof, and hydrogenated products thereof. The above phospholipids may be used alone or in combination of two or more.

By adding these phospholipids to the pack formulation, the polymer film enhances the affinity for sebum and keratin plugs, thereby promoting the adsorption of sebum stains and keratin plugs to the pack formulation. It was known that phospholipids have an affinity for the skin, but due to their properties as surfactants, when they are applied to pack formulations, they can prevent oily stains such as sebum and keratin plugs. It became clear that it had a stronger affinity.

The phospholipid content is 0.01-5.
0% is preferable. A phospholipid content of 0.3 to 10% is more preferable for adsorbing sebum stains and keratin plugs to the pack agent.

Further, in order to fully exert the effects of the present invention, it is preferable to limit the addition of a specific liquid oil agent to the peel-off type pack cosmetic.

According to the present invention, the added phospholipid enhances the removal effect by increasing the affinity between the pack formulation and the sebum / keratin plug. If the lipid is oriented at the interface of the oil agent, the effect may be weakened. Liquid paraffin, hydrocarbons such as squalane, isopropyl myristate, ester oils such as cetyl 2-ethylhexanoate, silicone oils such as dimethylpolysiloxane, tocopheryl acetate, octyl paramethoxycinnamate, etc. with phospholipids, etc. The addition amount is preferably equal to or less than the amount, more preferably not added at all. Triglyceride oils and fats such as olive oil, castor oil and macadamia nut oil have a particularly unfavorable effect on the effects of the present invention, and therefore it is preferable not to add them.

The peel-off type pack cosmetic of the present invention comprises:
In addition to the above essential components, if necessary, alcohols, glycols, medicinal components, fragrances, preservatives, colorants, powders,
Surfactants and the like can be appropriately added within a range that does not impair the effects of the present invention.

The peel-off type pack cosmetic of the present invention is used on the entire face or a part commonly called T zone such as the forehead, the nose and the chin. Usage is similar to general peel-off pack cosmetics,
An appropriate amount is applied to each part, and after being appropriately dried for 10 to 20 minutes, it is peeled off.

[0014]

EXAMPLES Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited thereto.

Examples 1 to 8 and Comparative Examples 1 to 4 Peel-off type pack cosmetics having the compositions shown in Tables 1 and 2 below were prepared by a conventional method, and (a) the effect of removing cork plugs and (b) The ease of application and (c) the pain at the time of peeling the pack agent were evaluated. The evaluation results are shown in Table 3. In the examples and comparative examples,% means% by weight.

[0016]

[Table 1]

[0017]

[Table 2]

(Manufacturing Method) A. The components (1), (2) and (9) are mixed, heated to 80 ° C. to dissolve uniformly, and then cooled to room temperature. B. Components (3) to (8) were added to A and mixed to obtain a peel-off type pack cosmetic.

(B) Removal of keratin plugs (evaluation method) The number of keratin plugs per unit area around the nose of the test panel is counted in advance, and this example is used for Example 1
8 and the samples of Comparative Examples 1 to 4 were applied in appropriate amounts, and the number of removed keratin plugs after drying and peeling was counted to determine the removal rate. Three test panels were used for each sample, and the average removal rate was evaluated according to the following evaluation criteria (a).

Evaluation criteria (a) ◎: Square plug removal rate of 80% or more ○: Square plug removal rate of 50% or more and less than 80% △: Square plug removal rate of 30% or more and less than 50% X: Square plug removal rate less than 30%

(B) Ease of coating (evaluation method) Examples 1 to 8 were carried out using 15 test panels.
The samples of Comparative Examples 1 to 4 were applied on the face in an appropriate amount, and the ease of application of each sample was evaluated using the evaluation criteria (b) below. The average value of the scores for each sample was evaluated according to the following evaluation criteria (c).

Evaluation criteria (b) (Score): (Evaluation) 4: Easy to apply 3: Somewhat easy to apply 2: difficult to apply 1: Cannot be applied Evaluation criteria (c) (Score): (Evaluation) 3.5 or higher: ◎ 2.5 or more and less than 3.5: ○ 1.5 or more and less than 2.5: △ Less than 1.5: ×

(C) Pain test during peeling Example 1 to 8 and Comparative Example 1 using 15 panelists
An appropriate amount of each of the samples of Nos. 4 to 4 was applied to the face, and the pain felt during peeling after drying was rated using the following evaluation criteria (d), and the average value of the scores of the test panels for each sample was given below. It evaluated by the evaluation criteria (e). Evaluation Criteria (d) (Score): (Evaluation) 4: Not Painful 3: Slightly Painful 2: Painful 1: Very Painful Evaluation Criterion (e) (Score): (Evaluation) 3.5 or More: ◎ 2. 5 or more and less than 3.5: ○ 1.5 or more and less than 2.5: △ less than 1.5: ×

[0024]

[Table 3]

As is clear from the results shown in Table 3, Comparative Examples 1 to 4 which do not contain phospholipids cannot satisfy the evaluation items, whereas Examples 1 to 5 which fall within the preferred component amount range of the present invention.
Satisfied all the evaluation items. From these results, it is useful to add a phospholipid to a peel-off type pack cosmetic containing a polymer compound as a film forming agent.

Example 9         (Component) (%)   1. Polyvinyl alcohol 10   2. CMC soda 5   3. Glycerin 2   4. Ethanol 16   5. Fragrance suitable amount   6. Preservative Suitable amount   7. Buffering agent   8. Hydrogenated egg yolk lecithin 1   9. Purified water balance

(Manufacturing Method) A. The components (1) to (3) and (9) are mixed, heated to 80 ° C. to uniformly dissolve, and then cooled to room temperature. B. Components (4) to (8) were added to A and mixed to obtain a peel-off type pack cosmetic. Example 9 had an excellent effect of removing keratin plugs, was easy to apply, had a mild action on the skin, and did not cause pain at the time of peeling the pack.

[0028]

The peel-off type pack cosmetic of the present invention comprises:
It can effectively remove sebum stains, especially the square plugs clogged in pores, which could not be sufficiently removed by the conventional peel-off type pack cosmetics, and still exert these effects without causing pain during peeling. Therefore, it is useful for preventing comedo and sebaceous fibritis.

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Claims (3)

(57) [Claims] 1. A film-forming agent containing at least polyvinyl alcohol and a phospholipid ( excluding lysophospholipid ) are blended.
(However, astaxanthin and polyunsaturated fatty acid
Piruo <br/> off type pack cosmetic for keratotic plugs removed, characterized in that except if). 2. The peel-off type pack cosmetic according to claim 1, wherein the amount of the film forming agent is 5 to 30%. 3. The peel-off type pack cosmetic according to claim 1, wherein the phospholipid content is 0.01 to 50%.