Method for expanding skin area to be wiped in skin cleaning

Abstract

To provide methods for imparting a sufficient refreshing feeling even if the area of the skin site to be wiped is widened, in the skin cleaning using a skin cleaning tool in which a wipe, such as cosmetic cotton, is impregnated with a skin cleaning composition.SOLUTION: A skin cleaning tool in which a wipe, such as cotton for makeup, is impregnated with a skin cleaning composition that contains polyethylene glycol together with 8 to 20 wt.% of ethanol has improved durability of the effect of imparting a refreshing feeling, and can impart a sufficient refreshing feeling even if the area of the skin site to be wiped is widened.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a method for increasing the area of ​​skin that is wiped when wiping the skin with a skin wiping device. [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, conventionally, skin wiping compositions are used by impregnating a wiping implement such as cosmetic cotton, but this has the drawback that the refreshing feeling is weakened if the area of ​​the skin to be wiped is expanded or if the composition is used to wipe one skin implement and then repeatedly used to wipe another skin implement. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-50272 Summary of the Invention [Problem to be solved by the invention]

[0006] An object of the present invention is to provide a method for wiping the skin using a skin-cleaning device, such as cosmetic cotton, impregnated with a skin-cleaning composition, which provides a sufficient feeling of freshness even when the area of ​​the skin to be wiped is expanded. [Means for solving the problem]

[0007] The present inventors have conducted extensive research to solve the above problems and have found that a skin wiping device, such as cosmetic cotton, impregnated with a skin wiping composition containing 8 to 20% by weight of ethanol and polyethylene glycol has an improved durability of the effect of providing a refreshing feeling, and can provide a sufficient refreshing feeling even when the area of ​​the skin to be wiped is expanded.The present invention was completed based on this finding and through further research.

[0008] That is, the present invention provides the following aspects. Item 1. A method for enlarging the skin area wiped by a skin wiping device, comprising: The method, wherein a skin wiping device impregnated with a skin wiping composition containing 8 to 20% by weight of ethanol and polyethylene glycol is used for wiping the skin. Item 2. The method according to Item 1, wherein the average molecular weight of the polyethylene glycol is 200 to 20,000. Item 3. The method according to Item 1 or 2, wherein the wiping tool is a cosmetic cotton pad. Item 4. The method according to any one of Items 1 to 3, wherein the skin is wiped over an area that is 30 times or more the area of ​​the contact surface of the skin wiping device with the skin. Item 5. The method according to any one of Items 1 to 4, wherein one skin wiping device is used to wipe two or more different skin sites. Item 6. A method for expanding the area in which the wiping effect is felt when wiping the skin, The method, wherein a skin wiping device impregnated with a skin wiping composition containing 8 to 20% by weight of ethanol and polyethylene glycol is used for wiping the skin. Item 7. A method for sustaining the effect of providing a refreshing feeling in use in a composition for cleansing skin, the method comprising blending 8 to 20% by weight of ethanol and polyethylene glycol into the composition for cleansing skin. [Effects of the Invention]

[0009] According to the method of the present invention, when wiping the skin using a skin-cleaning device impregnated with a skin-cleaning composition, a sufficient feeling of freshness can be obtained even if the area of ​​the skin to be wiped is expanded. This makes it possible to wipe a wide area of ​​the skin at once, or to use one skin-cleaning device repeatedly on different skin areas, thereby improving convenience when wiping the skin. DETAILED DESCRIPTION OF THE INVENTION

[0010] 1. Method for expanding the skin area wiped by the skin wiper The method of the present invention is a method for expanding the area of ​​skin wiped with a skin cleaning device, characterized in that the skin is wiped using a skin cleaning device impregnated with a skin wiping composition containing 8 to 20% by weight of ethanol and polyethylene glycol. In the present invention, "expanding the area of ​​skin wiped with a skin cleaning device" refers to wiping a wide area of ​​skin at once when using a skin cleaning device to wipe the skin, or repeatedly using the skin cleaning device to wipe two or more skin areas. The method of the present invention is described in detail below.

[0011] [Skin cleansing composition] In the method of the present invention, the skin wiping composition impregnated into the wiping tool contains 8 to 20% by weight of ethanol and polyethylene glycol. By using a skin wiping composition containing 8 to 20% by weight of ethanol and polyethylene glycol, the skin wiping tool can have a longer-lasting effect of providing a refreshing feeling, and can provide a sufficient refreshing feeling even when the area of ​​the skin to be wiped is expanded.

[0012] ·Ingredients included The skin wiping composition used in the present invention contains 8 to 20% by weight of ethanol. Because the ethanol is contained at such a concentration, a sufficiently refreshing feeling can be achieved after wiping the skin. From the viewpoint of more suitably providing the effect of removing sebum and dirt from the skin and the refreshing feeling after wiping, the concentration of ethanol in the skin wiping composition 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 used in 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 skin wiping composition used in 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 skin wiping composition of the present invention is preferably 0.3 to 2% by weight, more preferably 0.5 to 1% by weight.

[0016] The skin wiping composition used in the present invention may further contain propylene glycol. When propylene glycol is further contained, it can impart moisturizing properties. 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%, more preferably 1 to 10 wt%.

[0017] The skin wiping composition used in 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.

[0018] The skin wiping composition used in 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 91.9 wt %, preferably 15 to 89.7 wt %, and more preferably 20 to 88.5 wt %.

[0019] The skin wiping composition used in the present invention may contain, in addition to the above-mentioned components, pharmacological ingredients, additives, etc. that are used in ordinary skin wiping compositions, if necessary.

[0020] Pharmacological ingredients that can be incorporated into the skin wiping composition used in 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, orthocaine, oxaliplatin ... Examples of pharmacological ingredients include: sesazain, oxypolyethoxydecane, Scopolia extract, percaminpase, tesitdecin, etc.), anti-inflammatory agents (dipotassium glycyrrhizinate, glycyrrhetinic acid, allantoin, ε-aminocaproic acid, indomethacin, felbinac, diclofenac sodium, loxoprofen sodium, etc.), skin protectants (collodion, castor oil, etc.), blood circulation promoting ingredients (vanillyl nonylate amide, nicotinic acid benzyl ester, capsaicin, chili pepper extract, etc.), cooling agents (menthol, camphor, etc.), and mucopolysaccharides (sodium chondroitin sulfate, 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.

[0021] Examples of additives that can be incorporated into the skin wiping composition used in 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: sodium thorium, 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, UV absorbers, chelating agents, adhesives, buffers, solubilizers, and solubilizers. 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.

[0022] Formulation The form of the skin wiping composition used in 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).

[0023] Specific examples of the formulation of the skin wiping composition used in the present invention include liquids, emulsions, lotions, gels, ointments, creams, etc. Among these formulations, preferred are liquids, emulsions, and lotions.

[0024] [Wiping tool] In the present invention, the wiping implement impregnated with the skin wiping composition is not particularly limited as long as it 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.

[0025] 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.

[0026] [Skin cleaning tool] In the method of the present invention, a skin-cleaning device impregnated with the skin-cleaning composition is used to wipe the skin. The amount of the skin-cleaning composition impregnated into the wiper is not particularly limited, and may be appropriately set within a range that allows skin wiping depending on the material of the wiper, as with conventional skin-cleaning devices.

[0027] [Skin cleansing] In the method of the present invention, the skin is wiped using the skin wiping device.

[0028] The skin to be wiped may be any area of ​​the skin from which removal of sebum and dirt is desired, such as the face, neck, hands, arms, legs, etc., with the face being preferred.

[0029] In the method of the present invention, the skin area wiped by the skin wiping device is expanded, making it possible to wipe a wide area of ​​skin at once, or to use one skin wiping device repeatedly on different skin areas.

[0030] More specifically, the method of the present invention can wipe an area of ​​skin that is, for example, about 30 times or more, 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) at one time.Furthermore, the method of the present invention can repeatedly wipe two or more skin sites, such as the right cheek, left cheek, forehead, chin, neck, right hand, and left hand.

[0031] 2. 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. Method for expanding the area of ​​skin wiped with a skin cleaning tool."

[0032] 3. 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 and polyethylene glycol 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. Method for expanding the skin area wiped with a skin wiping tool." [Example]

[0033] 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.

[0034] 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: 0.2 g) to obtain a skin-cleansing device.

[0035] 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.

[0036] After washing the face, half of the face was wiped about three times with the skin cleanser. After the wiping operation, the refreshing feeling (initial wiping) and the irritation during the wiping operation were scored according to the following criteria. Furthermore, after wiping one half of the face, the skin cleanser was used as is to wipe the other half of the face that had not been wiped, and the refreshing feeling (after repeated use) was also scored according to the following 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 irritation> 3 points: No irritation felt at all. 2 points: There was some irritation. 1 point: A strong irritation was felt.

[0037] 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) <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)

[0038] The results are shown in Tables 1 and 2. The skin wiping composition containing no ethanol provided an insufficient refreshing feeling even on first use (Comparative Example 6). The skin wiping composition containing no polyethylene glycol and 5% by weight of ethanol provided an insufficient refreshing feeling on first use, and after repeated use, the refreshing feeling was completely lost. Furthermore, even with the skin wiping composition containing 8 to 25% by weight of ethanol, if no polyethylene glycol was included, the refreshing feeling after repeated use was insufficient.

[0039] In contrast, skin wiping devices using skin wiping compositions containing polyethylene glycol together with 8 to 20% by weight of ethanol provided a sufficiently refreshing feeling after repeated use, and it was possible to expand the area of ​​skin that was wiped and to expand the range in which the wiping effect was felt when wiping the skin (Examples 1 to 8). Furthermore, in Examples 1 to 8, irritation during skin wiping was also reduced.

[0040] [Table 1]

[0041] Table 2

Claims

1. A method for enlarging the area of ​​skin wiped with a cosmetic cotton pad, comprising: The method for wiping the skin uses a cosmetic cotton wipe impregnated with a skin wiping composition containing 8 to 20% by weight of ethanol and 0.1 to 3% by weight of polyethylene glycol (excluding those containing a polymer formed with dimethyldiallylammonium chloride as an essential monomer component; those containing α-hydroxy acid and / or a salt thereof; those containing a polyoxyethylene alkyl ether having an HLB of 10 to 13 and having an alkyl group with 10 to 18 carbon atoms or a polyoxyethylene alkenyl ether having an alkenyl group with 10 to 18 carbon atoms; those containing a compound having a group represented by the following general formula (1); and those containing powder). 【Chemical 1】 [In general formula (1), R 1 CO represents an acyl group derived from a saturated or unsaturated fatty acid having 2 to 20 carbon atoms; R 2 represents hydrogen or a lower alkyl group having 1 to 3 carbon atoms which may be substituted with a hydroxyl group or a carboxyl group, and Y represents a carboxyl group, a sulfonic acid group, a sulfate ester group, a phosphate ester group, or a salt thereof. j and k each independently represent 0, 1, or 2, and j and k are not both 0.]

2. 2. The method according to claim 1, wherein the average molecular weight of the polyethylene glycol is 200 to 20,000.

3. A method according to either claim 1 or 2, wherein the area of ​​the skin is wiped over at least 30 times the area of ​​the contact surface of the cosmetic cotton with the skin.

4. The method according to any one of claims 1 to 3, wherein one cosmetic cotton pad is used to wipe two or more different skin sites.

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