Skin cleansing composition

Abstract

To provide skin cleaning compositions having suppressed stickiness after skin cleaning, imparting a sufficient refreshing feeling, and having improved durability of the effect of imparting a refreshing feeling.SOLUTION: A skin cleaning composition comprising polyethylene glycol and glycyrrhizic acid and / or a salt thereof together with 8 to 20 wt.% of ethanol has suppressed stickiness after skin cleaning, imparts a sufficient refreshing feeling, and has improved durability of the effect of imparting a refreshing feeling, when wiping the skin using a wiping tool, such as cosmetic cotton, which is impregnated with the skin cleaning composition.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a skin wiping composition that suppresses stickiness after wiping the skin, provides a sufficient refreshing feeling in use (refreshing feeling), and has an improved durability of the effect of providing the refreshing feeling. [Background technology]

[0002] Skin-cleansing compositions are widely used as skin care products that remove sebum and dirt from the skin to keep the skin hygienic. Skin-cleansing compositions are required to not only remove sebum and dirt from the skin, but also to provide a refreshing feeling upon wiping, so that the effect can be felt. Ethanol has an excellent degreasing effect, making it effective in removing sebum and dirt, and also capable of imparting a refreshing feeling upon use, and therefore is widely used as a compounding ingredient in skin-cleansing compositions.

[0003] In order to improve the effect of removing sebum and dirt from the skin and the refreshing feeling after wiping, it is effective to incorporate a high concentration of ethanol into a skin wiping composition. However, because ethanol is irritating to the skin, there is a limit to the effectiveness of ethanol alone in removing sebum and dirt and improving the refreshing feeling after wiping. Therefore, Patent Document 1 proposes a topical skin composition containing diethylene glycol monoether and / or triethylene glycol monoether of a specific structure as a formulation that improves the usability by reducing the amount of ethanol or by not incorporating ethanol at all. However, the formulation described in Patent Document 1 also reduces the refreshing feeling after wiping, so it still does not have satisfactory performance.

[0004] Furthermore, when wiping the skin with a skin-cleaning composition, the skin-cleaning composition remaining on the skin after wiping can cause a sticky feeling. Therefore, in developing a skin-cleaning composition, it is an important required performance that the skin does not feel sticky after wiping.

[0005] Furthermore, conventionally, skin-cleansing compositions have been used in a state in which they are impregnated into wipes such as cosmetic cotton pads, but these compositions have the drawback of weakening the refreshing feeling when the area of ​​the skin to be wiped is expanded or when the composition is repeatedly used to wipe another skin area after wiping one skin area. Therefore, it is also important for skin-cleansing compositions to have an effect of providing a refreshing feeling that lasts longer. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-50272 Summary of the Invention [Problem to be solved by the invention]

[0007] The object of the present invention is to provide a composition for wiping the skin, which suppresses stickiness after wiping the skin, provides a sufficient refreshing feeling, and has an improved durability of the effect of providing the refreshing feeling. [Means for solving the problem]

[0008] The present inventors have conducted extensive research to solve the above-mentioned problems and have found that a skin-cleansing composition containing 8 to 20% by weight of ethanol, polyethylene glycol, and glycyrrhizinic acid and / or a salt thereof, when impregnated into a wipe such as cosmetic cotton and used to wipe the skin, suppresses stickiness after wiping and provides a sufficient refreshing feeling. Furthermore, the inventors have found that the skin-cleansing composition has an improved durability of the refreshing feeling-providing effect, and that when used to wipe a wider area of ​​skin while impregnated into a wipe, a sufficient refreshing feeling can be provided. The present invention was completed based on these findings and through further research.

[0009] That is, the present invention provides the following aspects. Item 1. A composition for wiping skin, comprising 8 to 20% by weight of ethanol, polyethylene glycol, and glycyrrhizinic acid and / or a salt thereof. Item 2. The composition for wiping skin according to Item 1, wherein the concentration of polyethylene glycol is 0.1 to 3% by weight. Item 3. The composition for wiping skin according to Item 1 or 2, wherein the polyethylene glycol has an average molecular weight of 200 to 20,000. Item 4. The composition for wiping skin according to any one of Items 1 to 3, further comprising propylene glycol and / or glycerin. Item 5. A skin wiping device comprising a wiping device impregnated with the skin wiping composition according to any one of items 1 to 4. Item 6. A method for wiping skin, comprising wiping the skin with the composition for wiping skin according to any one of items 1 to 4. Item 7. A method for enlarging the skin area wiped by a skin wiping device, comprising: Item 6. The method for wiping the skin, wherein the skin wiping device according to Item 5 is used. [Effects of the Invention]

[0010] The skin-wiping composition of the present invention can provide a sufficient feeling of freshness after wiping the skin, thereby providing a sense of excellent effectiveness. Furthermore, the skin-wiping composition of the present invention can also sufficiently suppress stickiness due to the skin-wiping composition remaining after the wiping operation, thereby further improving the feeling when used.

[0011] Furthermore, when the skin wiping composition of the present invention is impregnated into a wiping implement and used for wiping, a sufficiently refreshing feeling can be obtained even if the area of ​​the skin to be wiped is expanded, so that a wide area of ​​skin can be wiped at once, or one skin wiping implement can be used repeatedly on different skin areas, thereby improving convenience. DETAILED DESCRIPTION OF THE INVENTION

[0012] 1. Skin cleansing composition The composition for wiping skin of the present invention is characterized by containing 8 to 20% by weight of ethanol, polyethylene glycol, and glycyrrhizinic acid and / or a salt thereof. The composition for wiping skin of the present invention will be described in detail below. [Ingredients included] The composition for wiping skin of the present invention contains 8 to 20% by weight of ethanol. Because it contains ethanol at such a concentration, it can provide a sufficient refreshing feeling after wiping the skin while suppressing stickiness after wiping. From the viewpoint of more suitably providing the effect of removing sebum and dirt from the skin, the refreshing feeling after wiping, and the effect of suppressing stickiness after wiping, the concentration of ethanol in the composition for wiping skin of the present invention is preferably 8 to 17% by weight, more preferably 10 to 15% by weight, and particularly preferably 11 to 13% by weight.

[0013] The skin wiping composition of the present invention further contains polyethylene glycol, which improves the durability of the refreshing effect and makes it possible to achieve a sufficient refreshing feeling when wiping with the composition impregnated in a wiper, even when the area of ​​the skin to be wiped is expanded or when the wiper is used repeatedly.

[0014] The average molecular weight of the polyethylene glycol used in the present invention is not particularly limited, and may be, for example, about 200 to 20,000, preferably about 1,000 to 20,000, and more preferably about 2,000 to 20,000. Specific examples of the polyethylene glycol used in the present invention include polyethylene glycol 200, polyethylene glycol 300, polyethylene glycol 400, polyethylene glycol 600, polyethylene glycol 1000, polyethylene glycol 1500, polyethylene glycol 1540, polyethylene glycol 2000, polyethylene glycol 3350, polyethylene glycol 4000, polyethylene glycol 6000, polyethylene glycol 8000, polyethylene glycol 9000, polyethylene glycol 11,000, polyethylene glycol 12,000, and polyethylene glycol 20,000. Among these polyethylene glycols, polyethylene glycol 200, polyethylene glycol 400, polyethylene glycol 4000, polyethylene glycol 6000, and polyethylene glycol 20,000 are preferred from the viewpoint of further improving the durability of the refreshing feeling-imparting effect.

[0015] The concentration of polyethylene glycol in the composition for wiping skin of the present invention is, for example, 0.1 to 3% by weight. From the viewpoint of further improving the durability of the effect of providing a refreshing feeling, the concentration of polyethylene glycol in the composition for wiping skin of the present invention is preferably 0.3 to 2% by weight, and more preferably 0.5 to 1% by weight.

[0016] The composition for wiping skin of the present invention further contains glycyrrhizinic acid and / or a salt thereof, which makes it possible to suppress stickiness after wiping.

[0017] Glycyrrhizic acid is a known ingredient known to have anti-inflammatory and anti-allergic effects. The salt of glycyrrhizic acid is not particularly limited as long as it is pharmaceutically or cosmetically acceptable, and specific examples include alkali metal salts such as sodium salt and potassium salt; ammonium salt, etc. These salts may be used alone or in combination of two or more.

[0018] The concentration of glycyrrhizinic acid and / or a salt thereof in the composition for wiping skin of the present invention is, for example, 0.1 to 3% by weight. From the viewpoint of further improving the effect of suppressing stickiness after wiping, the concentration of polyethylene glycol in the composition for wiping skin of the present invention is preferably 0.3 to 2% by weight, more preferably 0.5 to 1% by weight.

[0019] The skin wiping composition of the present invention may further contain propylene glycol. When propylene glycol is further contained, moisturizing properties can be imparted. The concentration of propylene glycol in the skin wiping composition of the present invention is not particularly limited, but may be, for example, 0.1 to 30 wt%, preferably 0.5 to 20 wt%, and more preferably 1 to 10 wt%.

[0020] The skin wiping composition of the present invention may further contain glycerin. When glycerin is further contained, moisturizing properties can be imparted. The concentration of glycerin in the skin wiping composition of the present invention is not particularly limited, but may be, for example, 0.1 to 30% by weight, preferably 0.5 to 20% by weight, and more preferably 1 to 10% by weight.

[0021] The skin-wiping composition of the present invention preferably contains water as a base. The content of water in the skin-wiping composition of the present invention may be the balance other than the ingredients to be blended, and may be, for example, 10 to 91.8 wt %, preferably 15 to 88.4 wt %, more preferably 20 to 87 wt %, and particularly preferably 40 to 85 wt %.

[0022] In addition to the above-mentioned components, the skin wiping composition of the present invention may contain pharmacological ingredients, additives, etc. that are used in ordinary skin wiping compositions, as needed.

[0023] Pharmacological ingredients that can be incorporated into the skin wiping composition of the present invention include, for example, antibacterial or disinfectant agents (isopropylmethylphenol, hinokitiol, chlorhexidine hydrochloride, chlorhexidine gluconate, triclosan, lysozyme chloride, sulfadiazine, benzalkonium chloride, dequalinium chloride, benzethonium chloride, cetylpyridinium chloride, etc.), antihistamines (chlorpheniramine maleate, etc.), local anesthetics (procaine, tetracaine, bupivacaine, mepipacaine, chloroprocaine, proparacaine, meprylcaine or salts thereof, orthocyanins, etc.), and the like. Examples of pharmacological ingredients include benzoyl peroxide, oxethazaine, oxypolyethoxydecane, Scopolia extract, percaminpase, tesitdecin, etc.), anti-inflammatory agents (glycyrrhetinic acid, allantoin, ε-aminocaproic acid, indomethacin, felbinac, diclofenac sodium, loxoprofen sodium, etc.), skin protectants (collodion, castor oil, etc.), blood circulation promoting ingredients (nonylic acid vanillylamide, nicotinic acid benzyl ester, capsaicin, chili pepper extract, etc.), cooling agents (menthol, camphor, etc.), and mucopolysaccharides (chondroitin sulfate sodium, glucosamine, etc.). These pharmacological ingredients may be used alone or in combination of two or more. When these pharmacological ingredients are contained, the amount thereof may be appropriately determined depending on the type of pharmacological ingredient used, the desired effect, etc.

[0024] Examples of additives that can be incorporated into the skin wiping composition of the present invention include monohydric lower alcohols other than ethanol (propanol, isopropanol, butanol, etc.), polyhydric alcohols other than those mentioned above (ethylene glycol, 1,3-butylene glycol, isoprene glycol, diethylene glycol, dipropylene glycol, polypropylene glycol, etc.), surfactants (nonionic surfactants, anionic surfactants, cationic surfactants, zwitterionic surfactants), preservatives (methylparaben, propylparaben, benzoic acid, sodium benzoate, sorbic acid, etc.), flavoring agents (citral, 1,8-thioneol, citronellol, farnesol, etc.), colorants (tar dyes (Brown No. 201, Blue No. 201, Yellow No. 4, Yellow No. 403, etc.), cocoa dyes, chlorophyll, aluminum oxide, etc.), thickeners (polyvinylpyrrolidone, sodium alginate, etc.), and the like. Examples of additives include: cellulose, ethyl cellulose, hydroxypropyl methylcellulose, sodium carboxymethylcellulose, xanthan gum, carrageenan, etc.), pH adjusters (phosphoric acid, hydrochloric acid, citric acid, sodium citrate, succinic acid, tartaric acid, sodium hydroxide, potassium hydroxide, triethanolamine, triisopropanolamine, etc.), humectants (sodium dl-pyrrolidonecarboxylate solution, D-sorbitol solution, etc.), stabilizers (dibutylhydroxytoluene, butylhydroxyanisole, sodium edetate, sodium metaphosphate, L-arginine, L-aspartic acid, DL-alanine, glycine, sodium erythorbate, propyl gallate, sodium sulfite, sulfur dioxide, chlorogenic acid, catechin, rosemary extract, etc.), antioxidants, ultraviolet absorbers, chelating agents, adhesives, buffers, solubilizers, and the like. These additives may be used alone or in combination of two or more. The content of these additives can be appropriately determined depending on the formulation, etc.

[0025] [Form of formulation] The form of the skin wiping composition of the present invention is not particularly limited, but it is preferably in a form that is easy to use for wiping the skin, particularly in a form that is easy to impregnate into a wiping tool, and specifically, it is preferably in a liquid or semi-solid form (gel, ointment, paste).

[0026] Specific examples of the formulation of the skin wiping composition of the present invention include liquids, emulsions, lotions, gels, ointments, creams, etc. Among these formulations, preferred are liquids, emulsions, and lotions.

[0027] [How to use] The skin-cleansing composition of the present invention is used for wiping the skin for skin care. There are no particular limitations on the method for wiping the skin with the skin-cleansing composition of the present invention, but it is preferable to impregnate a wiping implement with an appropriate amount of the composition and wipe the skin requiring skin care.

[0028] The wiping implement to be impregnated with the skin wiping composition of the present invention may be any implement that can be used to wipe the skin, and examples thereof include cosmetic cotton, cosmetic puffs, nonwoven fabric sheets, woven fabric sheets (such as gauze), sponges, etc. The constituent materials of these wiping implements are not particularly limited and may be, for example, natural fibers, recycled fibers, semi-synthetic fibers, synthetic fibers, synthetic resins, etc., but from the viewpoint of the feel when wiping, natural fibers are preferred, and cotton is more preferred.

[0029] Among these wiping implements, cosmetic cotton pads and nonwoven fabric sheets are preferred, and cosmetic cotton pads are more preferred, from the viewpoint of the feeling of use when wiping.

[0030] The skin to which the skin wiping composition of the present invention is applied may be any skin area from which removal of sebum and dirt is desired, including, for example, the face, neck, hands, arms, legs, etc., with the face being preferred.

[0031] The skin-cleansing composition of the present invention can maintain its refreshing effect, so that when used in a wiper impregnated with the composition, a sufficient refreshing feeling can be achieved even when the area of ​​the skin to be wiped is expanded. Therefore, when used in a wiper impregnated with the composition, the skin-cleansing composition of the present invention can be used to wipe a wide area of ​​skin at once, or can be used repeatedly to wipe two or more skin areas. More specifically, the skin-cleansing composition of the present invention can be used to wipe an area of ​​skin that is, for example, at least about 30 times, preferably about 35 to 80 times, and more preferably about 40 to 50 times the area of ​​the wiper (the area of ​​the surface of the wiper that comes into contact with the skin). Furthermore, the skin-cleansing composition of the present invention can be used repeatedly to wipe two or more skin areas, such as the right cheek, left cheek, forehead, chin, neck, right hand, and left hand.

[0032] 2.Skin cleaning tool The skin wiping device of the present invention is characterized in that the skin wiping composition is impregnated into a wiping device. The composition and formulation of the skin wiping composition used in the skin wiping device of the present invention, the type and material of the wiping device, and the method of use are as described in the section "1. Skin wiping composition" above.

[0033] 3. Method for expanding the area of ​​skin to be wiped The present invention further provides a method for expanding the area of ​​skin to be wiped by wiping the skin with the skin wiping device. In the present invention, "expanding the area of ​​skin to be wiped" refers to wiping a wide area of ​​skin at once or repeatedly using the skin wiping device to wipe two or more skin areas when wiping the skin, and specific embodiments thereof are as described in the section "1. Skin wiping composition" above.

[0034] 4. How to expand the area where you can feel the cleansing effect when wiping your skin The present invention further provides a method for expanding the area where the wiping effect is felt when wiping skin by wiping the skin with the skin-cleaning tool. In the present invention, "expanding the area where the wiping effect is felt when wiping skin" refers to expanding the area of ​​skin where a refreshing feeling can be felt when wiping the skin with the skin-cleaning tool, for example, imparting a refreshing feeling to a wide area of ​​skin at once, or imparting a refreshing feeling repeatedly to two or more areas of skin, and specific embodiments thereof are as described above in the section "1. Skin-cleaning composition."

[0035] 5. How to prevent stickiness after wiping The present invention further provides a method for suppressing stickiness after wiping by wiping the skin with the skin wiping device. In the present invention, "suppressing stickiness after wiping" refers to suppressing stickiness felt due to the skin wiping composition remaining on the skin after wiping.

[0036] 6. How to maintain the refreshing feeling The present invention also provides a method for sustaining the effect of providing a refreshing feel in a skin-wiping composition, which comprises blending 8 to 20% by weight of ethanol, polyethylene glycol, and glycyrrhizinic acid and / or a salt thereof into the skin-wiping composition. The ingredients and concentrations used in this method, as well as the formulation and method of use of the skin-wiping composition, are as described above in the section "1. Skin-wiping composition." [Example]

[0037] The present invention will be described in more detail below by way of examples, but the present invention should not be construed as being limited to these examples.

[0038] Test Example 1 A skin-cleansing composition (skin-cleansing lotion) having the composition shown in Tables 1 and 2 was prepared, and 0.8 ml (400% impregnation) of the skin-cleansing composition was impregnated into a cosmetic cotton pad (100% cotton, 3.5 cm x 5 cm, two layers) to obtain a skin-cleansing device.

[0039] Using the obtained skin wiping device, 10 expert evaluation panelists evaluated the refreshing feeling (at the first use), refreshing feeling (after repeated use), degree of stickiness, and irritation using the following methods.

[0040] After washing the face, half of the face was wiped about three times with the skin-cleaning tool. After the wiping operation, the refreshing feeling (first time), the stickiness caused by the skin-cleaning composition remaining on the skin after the wiping operation, and the irritation during the wiping operation were evaluated according to the following evaluation criteria. Furthermore, after the wiping operation on half of the face, the skin-cleaning tool was used as it was to wipe the other half of the face that had not been wiped, and the refreshing feeling (after repeated use) was also evaluated according to the following evaluation criteria. <Criteria for judging the refreshing feeling after the first use and repeated use> 5 points: I felt a refreshing sensation after using it. 4 points: I felt a refreshing sensation after using it. 3 points: I felt a slight refreshing sensation after using it. 2 points: I didn't feel it was very refreshing after using it. 1 point: I didn't feel any refreshing sensation at all. <Criteria for determining the degree of stickiness> 5 points: No stickiness was felt at all. 4 points: Almost no stickiness was felt. 3 points: Neither. 2 points: Felt a little sticky. 1 point: Stickiness was clearly felt. <Irritation criteria> 3 points: No irritation felt at all. 2 points: There was some irritation. 1 point: A strong irritation was felt.

[0041] Next, the total scores of the 10 expert evaluation panelists for each item were calculated and judged according to the following criteria. <Refreshing feeling after the first and repeated use> ◎: Total score is 40-50 points (sufficiently refreshing) ○: Total score is 31-39 points (a level where a refreshing feeling can be felt to some extent) △: Total score is 25-30 points (not very refreshing) ×: Total score is 10-24 points (not refreshing) <Degree of stickiness> ◎: Total score is 44 to 50 points (level that can be said to be no stickiness) ○: Total score is 35 to 43 points (stickiness is barely noticeable) △: Total score is 22 to 34 points (slightly sticky) ×: Total score is 10 to 21 points (clear stickiness) <Irritation> ◎: Total score is 28-30 points (level that can be said to be completely irritating) ○: Total score is 24-27 points (irritation is barely noticeable) △: Total score is 20-23 points (slightly irritating) ×: Total score is 10 to 19 points (a level where a strong stimulus is felt)

[0042] The results are shown in Tables 1 and 2. Skin-cleansing compositions containing no ethanol provided an insufficient refreshing feeling even after initial use (Comparative Examples 1 and 9). Skin-cleansing compositions containing 5% by weight of ethanol, polyethylene glycol, and dipotassium glycyrrhizinate also provided an unsatisfactory refreshing feeling (Comparative Example 2). Furthermore, skin-cleansing compositions containing 25% by weight of ethanol, even those containing polyethylene glycol and dipotassium glycyrrhizinate, left a sticky feeling after wiping the skin, and irritation was also felt during wiping (Comparative Example 7). Furthermore, even with skin-cleansing compositions containing 8 to 20% by weight of ethanol, if they did not contain polyethylene glycol, the refreshing feeling after repeated use was insufficient, and if they did not contain dipotassium glycyrrhizinate, a sticky feeling was felt after wiping the skin (Comparative Examples 3 to 6 and 8).

[0043] In contrast, a skin cleansing composition containing polyethylene glycol and dipotassium glycyrrhizinate together with 8 to 20% by weight of ethanol provided a sufficient refreshing feeling after repeated use, and it was possible to expand the area of ​​skin that was wiped clean and to expand the range over which the wiping effect was felt when wiping the skin (Examples 1 to 7). Furthermore, in Examples 1 to 7, stickiness caused by the skin cleansing composition remaining on the skin after wiping the skin was sufficiently suppressed, and irritation during wiping the skin was also suppressed.

[0044] [Table 1]

[0045] [Table 2]

Claims

1. A skin wiping composition comprising 14.0 to 20% by weight of ethanol, 0.5 to 3% by weight of polyethylene glycol, and glycyrrhizinic acid and / or a salt thereof (excluding those containing diphenhydramine hydrochloride and allantoin, those containing tris(hydroxymethyl)aminomethane, those containing a polymer formed from dimethyldiallylammonium chloride as an essential monomer component, and those containing powder).

2. 2. The skin wiping composition according to claim 1, wherein the polyethylene glycol has an average molecular weight of 200 to 20,000.

3. A skin cleansing composition as described in claim 1 or 2, wherein the polyethylene glycol is selected from polyethylene glycol 200, polyethylene glycol 300, polyethylene glycol 400, and polyethylene glycol 600.

4. The skin wiping composition according to any one of claims 1 to 3, further comprising propylene glycol and / or glycerin.

5. A skin wiping device comprising a wiping device impregnated with the skin wiping composition according to any one of claims 1 to 4.

6. A method for wiping skin, comprising wiping the skin with the skin wiping composition according to any one of claims 1 to 4.

7. 1. A method for enlarging a skin area wiped by a skin wiping device, comprising: The expansion of the skin area to be wiped is due to repeated use to wipe two or more skin sites; 6. The method of claim 5, wherein the skin cleansing device is used in wiping the skin.

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