JP2008143831A - Sheet-formed cosmetic for cleaning skin - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet-formed cosmetic for cleaning skin, while having a wipe-cleaning effect of old keratin, sebum soil, etc., making the skin after the use as a moist state without having stickiness and also lasting its effects. <P>SOLUTION: This sheet-formed cosmetic for skin cleaning is obtained by impregnating a composition containing (A) ethylene glycol monoether and/or diethylene glycol ether, (B) an α-hydroxy acid and/or its salt, (C) polysaccharides and (D) water in a sheet-formed substrate. Optionally, it is possible to incorporate (E) a polyhydric alcohol other than the component (A) to the cosmetic. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a sheet-type cosmetic for skin cleaning.

The skin cleansing sheet cosmetics not only have the effect of wiping and cleaning old keratin and sebum stains, but also from the viewpoint of suppressing excessive sebum secretion after washing. It is required to do.
Conventionally, as a means for removing sebum dirt and the like, for example, a skin cleaning sheet containing a polyhydric alcohol or glycol ether, a nonionic surfactant of HLB 10-16 and water has been proposed ( For example, see Patent Documents 1 and 2).
However, although oily soils such as sebum can be removed by these attempts, there is a problem that the effect of making the skin state with a smooth feeling without roughness is inferior. Furthermore, there is a problem that rough skin such as roughness occurs due to excessive degreasing, and a problem that the effect of making the skin after use non-sticky and its sustainability is poor.

  Further, as a means for improving rough skin such as roughness, for example, a sheet-like base material is impregnated with a silicone mixture containing a silicone resin and one or more of low-viscosity silicone oils. A sheet-like cosmetic material is proposed (for example, see Patent Document 3). However, these trials can improve rough skin such as roughness, but the skin after use has not been made sticky and watery, and the removal effect of old keratin and sebum dirt is inferior. There is a problem.

Japanese Patent Laid-Open No. 11-21211 JP 2002-154926 A JP 2002-201109 A

  In view of the above-mentioned problems of the prior art, the present invention has an effect of wiping and washing old keratin, sebum dirt, etc., while making the skin after use a non-sticky and watery state, and the effect continues. The purpose is to provide a sheet-like cosmetic for cleaning.

  As a result of intensive studies, the inventors of the present invention contain (A) ethylene glycol monoether and / or diethylene glycol ether, (B) α-hydroxy acid and / or a salt thereof, (C) saccharide, and (D) water. The skin cleansing sheet-like cosmetic obtained by impregnating the composition into a sheet-like base material improves the skin condition with a smooth and smooth feel by removing old keratin and sebum dirt. The present invention has been found by exhibiting the effect of making the skin non-sticky and watery, and further maintaining the watery state and suppressing excessive sebum secretion. It came to.

That is, the invention according to claim 1 is a composition containing (A) ethylene glycol monoether and / or diethylene glycol ether, (B) α-hydroxy acid and / or salt thereof, (C) saccharide, and (D) water. The present invention relates to a skin-cleaning sheet-form cosmetic comprising a sheet-like substrate impregnated with a product.
The invention according to claim 2 is the sheet-like makeup for skin cleaning according to claim 1, wherein the component (C) is one or more selected from the group consisting of trehalose, glycosyl trehalose, sorbitol and maltitol. Regarding fees.
The invention according to claim 3 further relates to the sheet-like cosmetic for skin cleaning according to claim 1 or 2, further comprising (E) at least one polyhydric alcohol other than the component A.
The invention according to claim 4 relates to the sheet-like cosmetic for skin cleaning according to any one of claims 1 to 3, wherein the sheet-like base material is a nonwoven fabric.

  According to the skin-cleansing sheet-like cosmetic of the present invention, by removing old keratin and sebum stains, it is possible to improve the skin state with a smooth feeling without roughness or roughness. Moreover, in addition to the effect of making the skin non-sticky, it also has the effect of suppressing excessive sebum secretion by maintaining the watery state.

  The present invention comprises a composition comprising (A) ethylene glycol monoether and / or diethylene glycol ether, (B) α-hydroxy acid and / or a salt thereof, (C) saccharide, and (D) water (hereinafter “ The present invention relates to a “skin-cleaning sheet-like cosmetic” obtained by impregnating a sheet-like base material with a sheet-like base material. Hereinafter, embodiments of the present invention will be described.

Specific examples of the ethylene glycol monoether as component (A) include ethylene glycol monoalkyl ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether and ethylene glycol monobutyl ether, and ethylene glycol monophenyl ether. it can.
Specific examples of the diethylene glycol ether include diethylene glycol monoalkyl ethers such as diethylene glycol monomethyl ether, diethylene glycol monoethyl ether and diethylene glycol monobutyl ether, and diethylene glycol dialkyl ethers such as diethylene glycol diethyl ether and diethylene glycol dibutyl ether. One of these components may be used alone, or two or more thereof may be used in appropriate combination.

Although the compounding quantity of (A) component is not specifically limited, It is preferable to set it as 0.1-15 weight% in a composition, and it is more preferable to set it as 1-12 weight%.
The reason for this is that if the blending amount is less than 0.1% by weight, the effect of removing sebum dirt is inferior, and if it exceeds 15% by weight, the skin irritation becomes too strong. This is also not preferable.

  Examples of the (B) component α-hydroxy acid include glyceric acid, glycolic acid, hydroxymethyl glycolic acid, lactic acid, glucuronic acid, galacturonic acid, gluconic acid, glucoheptonic acid, α-hydroxybutyric acid, α-hydroxyisobutyric acid, α-hydroxyvaleric acid, α-hydroxyisovaleric acid, α-hydroxycaproic acid, α-hydroxyisocaproic acid, tartronic acid, tartaric acid, malic acid, hydroxyglutaric acid, hydroxyadipic acid, hydroxypimelic acid, murine acid, Examples thereof include citric acid, isocitric acid, saccharic acid, dihydroxymaleic acid, dihydroxytartaric acid, dihydroxyfumaric acid, and pyruvic acid. Moreover, it does not specifically limit as a salt of alpha-hydroxy acid, For example, alkali metal salts, such as a sodium salt and potassium salt, alkaline-earth metal salt, ammonium salt, an amine salt, etc. can be illustrated. One of these components may be used alone, or two or more thereof may be used in appropriate combination.

Although the compounding quantity of (B) component is not specifically limited, It is preferable to set it as 0.005 to 2 weight% in a composition, and it is more preferable to set it as 0.01 to 1.5 weight%.
The reason for this is that when the blending amount is less than 0.005% by weight, the effect of removing old keratin on the surface of the skin is inferior, and even when blending more than 2% by weight, the obtained effect remains unchanged. Therefore, in either case, it is not preferable.

  Examples of the saccharide of component (C) include D-xylose, L-lyxose, D-arabinose, D-ribose, D-ribulose, D-xylulose, L-xylulose, D-glucose, D-galactose, and D-fructose. , L-galactose, D-mannose, xylobiose, agarobiose, carabiose, maltose, isomaltose, sophorose, cellobiose, trehalose, neotrehalose, isotrehalose, glycosyl trehalose, inulobiose, vicyanose, isoprimebrose, sambibios, primiverose Melibiose, lactose, lycobiose, epicellobiose, sucrose, tulanose, maltulose, lactulose, epigentibiose, robinobiose, silanobiose Rutinose can sorbitol, maltitol, maltotriose, mannitol, erythritol, it is illustrated xylitol and the like. One of these components may be used alone, or two or more thereof may be used in appropriate combination. Among these, trehalose, glycosyl trehalose, sorbitol, and maltitol can be particularly preferably used.

Although the compounding quantity of (C) component is not specifically limited, It is preferable to set it as 0.01-10 weight% in a composition, and it is more preferable to set it as 0.1-6 weight%.
This is because the blending amount of less than 0.01% by weight is inferior in the effect of making the water-free state without stickiness, and even if blended in excess of 10% by weight, the feeling of use deteriorates. Therefore, it is not preferable in any case.

Water blended in the composition of the present invention is also used as a solvent for dissolving the above-described blending components (A to C), and examples of water used include purified water, ion-exchanged water, and tap water. be able to.
Further, the blending amount is preferably 40 to 95% by weight, more preferably 50 to 90% by weight in the composition of the present invention.
This is because when the blending amount is less than 40% by weight, not only the effect of the composition of the present invention as a solvent can be expected, but also because it is inferior in wateriness, and when blending more than 95% by weight, This is because inferior cleaning effect is not preferable in any case.

In the composition of the present invention, it is possible to further contain (E) at least one polyhydric alcohol other than the component (A) described above.
Examples of the polyhydric alcohol other than the component (A) include ethylene glycol, propylene glycol, isoprene glycol, dipropylene glycol, polyethylene glycol, 1,3-butylene glycol, diethylene glycol, dipropylene glycol, triethylene glycol, 1,2 -Butanediol, 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol, 1,2-decanediol, glycerin, concentrated glycerin, diglycerin, polyglycerin, etc. By further adding the polyhydric alcohol to the composition of the present invention, the fresh skin condition is further maintained.
These polyhydric alcohols can be used singly or in combination of two or more, and the blending amount is also the effect of the present invention (the effect of wiping and washing old keratin, sebum stains, etc., water without sticky skin) It is not particularly limited as long as it is within a range in which the effect of bringing about various states, etc.) can be exhibited, but it is preferably 0.1 to 10% by weight, and preferably 1 to 8% by weight in the composition Is more preferable.

In addition to the above components, alcohols such as ethanol can be further added to the composition of the present invention as long as the effects of the present invention are not impaired.
In addition, a surfactant can also be blended in order to enhance the effect of removing sebum. The surfactant to be blended is preferably a nonionic surfactant. Specifically, sorbitan fatty acid ester, glycerin fatty acid ester, castor oil, hydrogenated castor oil, and their alkylene oxide adducts, polyoxy Examples include alkylene alkyl ethers, polyoxyalkylene fatty acid esters, polyoxyalkylene alkyl phenyl ethers, and the like. Of these, it is preferable to use an alkylene oxide adduct of hydrogenated castor oil or a polyoxyalkylene alkyl ether. Specific examples of the alkylene oxide adduct of hydrogenated castor oil preferably used in the present invention include polyoxyethylene hydrogenated castor oil, and examples of polyoxyalkylene alkyl ether include polyoxyethylene cetyl ether and polyoxyethylene. And polyoxypropylene decyl tetradecyl ether.
In addition, a refreshing agent can be added to give a refreshing feeling to the skin after use. Although the refreshing agent mix | blended is not specifically limited if it can mix | blend with cosmetics, For example, menthol derivatives, such as menthol and a menthyl glyceryl ether, camphor, etc. are mentioned.

  In the range not impairing the effects of the present invention, in addition to the above-described components, components usually used in cosmetics, for example, surfactants other than those described above, bactericides, anti-inflammatory agents, powders, ultraviolet absorbers, metal ions A sequestering agent, a fragrance, an antioxidant, vitamins, a plant extract, a pH adjuster, and the like can be appropriately blended.

Next, the “sheet-like substrate” used in the present invention will be described.
The sheet-like base material impregnated with the composition of the present invention is not particularly limited as long as it can be impregnated with a cosmetic composition, and a sheet-like support usually used as a cosmetic product can be used.
For example, woven fabrics or nonwoven fabrics made of natural, synthetic or semi-natural fibers can be mentioned. In the present invention, it is preferable to use “nonwoven fabrics” from the viewpoint of usability, ease of processing, and the like.
As natural fibers, cotton, pulp, silk, cellulose, hemp, linter, kabok, etc., as synthetic fibers, nylon, polyester fibers, polyacryl fibers, polypropylene fibers, polyethylene fibers, polyethylene terephthalate fibers, etc., semi-natural fibers Examples thereof include rayon and acetate.
These fibers can be used alone or in combination.
The sheet-like substrate can be subjected to an embossing process.
The embossing process includes a system that pushes the back surface up and floats (therefore, the back surface is recessed), and a system that forms a convex portion by attaching special ink to the surface (the back surface is not recessed), but is not particularly limited. .

The amount of the composition of the present invention to be impregnated into the sheet-like substrate is not particularly limited, but preferably 0.5 to 15 parts by weight of the composition of the present invention with respect to 1 part by weight of the sheet-like substrate. More preferably, it is 1 to 10% by weight.
Further, the impregnation method is not particularly limited, and any form may be used as long as the composition of the present invention is finally impregnated into the sheet-like base material, for example, a folded sheet form Illustrates a method of injecting and impregnating a composition into a substrate, a method of spraying before cutting, a method of cutting after impregnation by a printing method or the like, a method of immersing a sheet-like substrate cut into a composition, etc. be able to.

  The sheet-shaped cosmetic composition according to the present invention has the above-described sheet-shaped base material, and when pressed against the skin, most of the impregnating medium can be transferred onto the skin, so that the sheet-shaped cosmetic surfaced on the skin surface. Excess sebum and dirt can be effectively removed. In addition, as a sheet-like base material suitably used in the present invention, for example, Daiwabo Polytech RH (trade name, manufactured by Daiwa Boseki Co., Ltd.), TCF405 (trade name, manufactured by Nimura Chemical Co., Ltd.), SHALERIA CR050 (trade name, Asahi Kasei) Co., Ltd.), Cott Ace C060S / A02 (trade name, manufactured by Unitika Ltd.), Benlyse (trade name, manufactured by Asahi Kasei Co., Ltd.), M1-30-2PE (trade name, manufactured by Ino Paper Co., Ltd.) and the like.

As described above, the sheet-like cosmetic for cleaning the skin according to the present invention is improved by removing the sebum of the body and old keratin, etc., to improve the skin condition with a smooth and smooth feeling without roughness and water without stickiness. Since it can be made into various skin conditions, it can be preferably used especially for a face part having a large amount of sebum secretion.
Although the usage form of the skin cleaning sheet of the present invention is not particularly limited, for example, it is used in a state of being stored in a packaging tool or a state of being stored in a container or the like.
Although the form and material of a packaging tool and a container are not specifically limited, What can prevent volatilizing each component of this invention composition made to impregnate a sheet-like base material is preferable.

Hereinafter, the skin cleansing sheet-like cosmetic of the present invention will be described in detail with reference to examples.
However, the present invention is not limited to the following examples.

(Sample preparation 1)
According to the composition described in Table 1 and Table 2, after preparing the composition, a 10 cm square nonwoven fabric (trade name: RH, manufactured by Daiwabo Polytech Co., Ltd.) was impregnated with 3 g of the composition per 1 g of the nonwoven fabric, and Examples 1 to 6 and Comparative Examples 1 to 3 were used for the following evaluations.
The results are shown in Table 1 and Table 2, respectively.
In addition, all evaluation was implemented on the constant conditions of constant temperature and humidity of 23 degreeC and 60% of humidity.

(Test Example 1: Evaluation of sebum dirt removing effect and skin condition improving effect)
The skin cleansing sheet cosmetics obtained in each Example and each Comparative Example were applied to the face by 20 evaluation panels, and the sebum stain removing effect and the skin condition improving effect immediately after wiping were sensory evaluated according to the following evaluation criteria.
<Evaluation Criteria for Removal Effect of Sebum Dirt>
◎: More than 16 out of 20 people have no oiliness and feel that sebum dirt has been removed. ○: 11 to 15 out of 20 people have no oiliness and sebum dirt has fallen. △: 6 to 10 out of 20 people are not oily and there is a feeling that sebum dirt has been removed ×: 5 out of 20 people are not oily and sebum dirt is removed Replied that there is a feeling of touch <Evaluation criteria for skin condition improvement effect>
◎: More than 16 out of 20 people answered that the skin was smooth and smooth, and that there was a feeling of smoothness. ○: 11 to 15 out of 20 people felt that the skin was smooth and smooth, and that there was a feeling of smoothness. Answer △: 6 to 10 out of 20 have no skin roughness and roughness, and there is a feeling of smoothness ×: 5 or less of 20 persons have no skin roughness and roughness and have a feeling of smoothness Answer

(Test Example 2: Evaluation of moisturizing feeling)
The skin moisturizing feeling 5 minutes after the evaluation of Test Example 1 was subjected to sensory evaluation according to the following evaluation criteria by 20 evaluation panels.
<Evaluation criteria for moisturizing effect>
◎: More than 16 out of 20 responded that there was a watery moisturizing feeling without stickiness ○: 11-15 out of 20 responded that there was a watery moisturizing feeling without stickiness △: 6 out of 20 10 people answered that there was a watery moisturizing feeling without stickiness ×: 5 or less of 20 people answered that there was a watery moisturizing feeling without stickiness

(Test Example 3: Sustained moisturizing feeling and evaluation of skin condition)
Sensory evaluation was conducted according to the following evaluation criteria by 20 evaluation panels on the persistence of the moisturizing feeling and the skin condition 60 minutes after the evaluation of Test Example 1. In addition, in the maintenance of the moisturizing feeling, the evaluation was made in the same manner as the above-mentioned evaluation standard of moisturizing feeling.
<Evaluation criteria for skin condition>
◎: More than 16 out of 20 people answered that there was no “tekari” or “stickiness” due to sebum ○: 11 to 15 out of 20 people answered that there was no “tekari” or “stickiness” due to sebum △: 20 6 to 10 people answered that there was no “tekari” or “stickiness” due to sebum ×: 5 or less of 20 people answered that there was no “tekari” or “stickiness” due to sebum

From the results of Tables 1 and 2, the sheet-like cosmetics for skin cleaning according to the present invention (Examples 1 to 6) are Comparative Examples 1 to 3 in “Evaluation of Sebum Dirt Removal Effect and Skin Condition Improvement Effect”. Compared with each of the skin cleansing sheet cosmetics, there was a feeling that the sebum dirt was removed, and the skin condition was smooth and smooth, resulting in a smooth feeling.
In addition, in the “evaluation of moisturizing feeling”, the skin cleansing sheet-like cosmetic according to the present invention has a much higher evaluation of moisturizing feeling after 5 minutes of use than the skin cleaning sheet cosmetic of the comparative example. The result that there was a watery moisturizing feeling without stickiness was obtained.
Furthermore, the sheet-like cosmetics for skin cleaning (Examples 1 to 6) according to the present invention have a watery moisturizing feeling without stickiness even after 60 minutes of use in “Estimation of the moisturizing feeling and skin condition”. The result was that there was no “tekari” or “stickiness” due to sebum.

  From the above, the sheet-like cosmetic for skin cleaning according to the present invention can not only have an effect of removing sebum stains and an effect of improving the skin condition, but also can make the skin after use non-sticky and watery. The state can last (60 minutes). Furthermore, by maintaining the watery state, excessive sebum secretion is suppressed, and there is also an effect of making the skin state free of “tekari” and “stickiness” due to sebum.

  Hereinafter, the formulation example of this invention composition is shown. In addition, a compounding quantity is weight%.

(Prescription Example 1)
A skin cleansing sheet cosmetic was prepared by impregnating 1 g of the nonwoven fabric with 5 g of the composition.
Diethylene glycol monoethyl ether 6.0
Sodium citrate 0.25
Citric acid 0.05
Trehalose 2.0
Glycosyl trehalose 1.0
Maltitol 1.0
Polyethylene glycol 2.0
Glycerin 1.0
Polyoxyethylene polyoxypropylene decyl tetradecyl ether (30E.O.) (6PO) 1.0
1,2-octanediol 0.5
1- (2-Ethylhexyl) glyceryl ether 0.5
Ethanol 10.0
Macadamia nut oil 2.0
Peppermint oil 0.05
Fragrance 0.5
Purified water balance part Total 100.0

(Prescription example 2)
1 g of the nonwoven fabric was impregnated with 1 g of the composition to obtain a skin cleansing sheet cosmetic.
Ethylene glycol monoethyl ether 7.0
Diethylene glycol monoethyl ether 5.0
Sodium malate 0.5
Sodium citrate 0.5
Citric acid 0.1
Glycosyl trehalose 2.0
Sorbitol 2.0
Polyethylene glycol 2.0
1,3-butylene glycol 1.5
Dipropylene glycol 1.5
Polyoxyethylene polyoxypropylene Decyl tetradecyl ether (30E.O.) (6P.O.) 1.0
1,2-octanediol 0.3
1- (2-Ethylhexyl) glyceryl ether 0.3
Ethanol 20.0
Peppermint oil 0.05
Fragrance 0.5
Purified water balance part Total 100.0

Claims (4)

A sheet-like substrate is impregnated with a composition containing (A) ethylene glycol monoether and / or diethylene glycol ether, (B) α-hydroxy acid and / or salt thereof, (C) saccharide, and (D) water. A sheet-like cosmetic for skin cleaning. The sheet-form cosmetic for skin cleaning according to claim 1, wherein the component (C) is one or more selected from the group consisting of trehalose, glycosyl trehalose, sorbitol and maltitol. Furthermore, (E) Sheet-form cosmetics for skin washing | cleaning of Claim 1 or 2 formed by containing at least 1 or more types of polyhydric alcohols other than A component. The sheet-like cosmetic for skin cleaning according to any one of claims 1 to 3, wherein the sheet-like substrate is a nonwoven fabric.