Cleansing agent

Abstract

To provide a cleansing agent that smoothly blends with the skin, exhibits good compatibility with makeup, and enables excellent moisture retention after rinsing.SOLUTION: A cleansing agent comprising the following components (A) to (D): (A) 50 mass% or more and 80 mass% or less in total of hydrocarbon oil and ester oil, (B) 1 mass% or more and 20 mass% or less of polyhydric alcohol, (C) a mixed ester of (poly)glycerin, behenic acid, and eicosanedioic acid, and (D) 0.01 mass% or more and less than 1 mass% of a nonionic surfactant having an HLB of 12 or higher.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a cleansing agent. [Background technology]

[0002] Conventionally, cleansing cosmetics for removing sebum stains and makeup from the skin have come in a variety of forms, including oil-based products primarily composed of liquid oil, cream-, emulsion-, and gel-type products in which oily ingredients are emulsified with surfactants, and even lotion- and aqueous gel-type products that contain no or only trace amounts of oil. Oil-based cleansing products are excellent at quickly blending with makeup, but have the drawback of being strong cleansing power due to the high amount of surfactants they contain, which also washes away moisturizing ingredients essential to the skin. In recent years, solid or balm-type cleansing products have also been developed (Patent Document 1), which are widely marketed due to their good compatibility with makeup and good feel in use, but suffer from the drawback of poor usability. For these reasons, the functions required of cleansing products are diverse, including compatibility with makeup, feel in use, moisturizing feeling after rinsing, and ease of use. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-200263 Summary of the Invention [Problem to be solved by the invention]

[0004] To provide a cleansing agent that melts into the skin, blends well with makeup, and leaves the skin feeling moisturized after rinsing. [Means for solving the problem]

[0005] A cleansing agent containing the following (A) to (D): (A) 50% by mass or more and 80% by mass or less of hydrocarbon oil and ester oil in total (B) Polyhydric alcohol: 1% by mass or more and 20% by mass or less (C) Mixed ester of (poly)glycerin with behenic acid and eicosanedioic acid (D) 0.01% by mass or more but less than 1% by mass of a nonionic surfactant with an HLB of 12 or more [Effects of the Invention]

[0006] The cleansing agent of the present invention exhibits the effects of meltingly blending with the skin, blending well with makeup, and providing an excellent moisturizing feeling after rinsing. DETAILED DESCRIPTION OF THE INVENTION

[0007] Hereinafter, an embodiment of the present invention will be described.

[0008] The cleansing agent of the present invention can be used for both cosmetics and quasi-drugs.

[0009] The cleansing agent of the present invention contains component (A) a hydrocarbon oil and an ester oil.

[0010] The hydrocarbon oil used in the present invention may be any of solid hydrocarbon oils, semi-solid (paste-like) hydrocarbon oils, and liquid hydrocarbon oils, as long as it is one used in ordinary cosmetics. Examples of solid hydrocarbon oils include paraffin wax (solid paraffin), ceresin, petrolatum, microcrystalline wax, etc. Examples of semi-solid (paste-like) hydrocarbon oils include petrolatum and gelled hydrocarbons, etc. Examples of liquid hydrocarbon oils include liquid paraffin, squalene, squalane, etc.

[0011] These hydrocarbon oils may be used alone or in combination of two or more. From the viewpoint of effectiveness, it is preferable to use squalane.

[0012] The ester oil used in the present invention is not particularly limited as long as it is one that is used in ordinary cosmetics. Examples of the ester oil include ester oils of straight-chain fatty acids and lower alcohols such as isopropyl myristate, butyl myristate, isopropyl palmitate, ethyl stearate, butyl stearate, and ethyl oleate, ester oils of straight-chain fatty acids and higher straight-chain alcohols such as cetyl caprylate, hexyl laurate, caprylyl laurate, decyl laurate, decyl myristate, decyl oleate, and oleyl oleate, methylheptyl laurate, isostearyl laurate, methylheptyl myristate, isotridecyl myristate, and methylheptyl oleate. ester oils of straight-chain fatty acids with branched higher alcohols, such as ethylhexyl stearate, isostearyl myristate, octyldodecyl myristate, ethylhexyl palmitate, methylheptyl palmitate, hexyldecyl palmitate, isostearyl palmitate, ethylhexyl stearate, hexyldecyl stearate, isodecyl oleate, and octyldodecyl oleate; ester oils of branched fatty acids with lower alcohols, such as ethyl isostearate, isopropyl isostearate, and isobutyl isostearate; Ester oils of branched fatty acids and linear higher alcohols such as cetyl ethylhexanoate, cetostearyl ethylhexanoate, hexyl isostearate, and decyl isostearate, octyldodecyl neopentanoate, hexyldecyl ethylhexanoate, isostearyl ethylhexanoate, ethylhexyl isononanoate, isononyl isononanoate, hexyldecyl dimethyloctanoate, octyldodecyl dimethyloctanoate, ethylhexyl isopalmitate, methylheptyl isostearate, hexyldecyl isostearate, and isostearate. Ester oils of branched fatty acids and branched higher alcohols such as isostearyl tearate and octyldodecyl isostearate, ethylene glycol diethylhexanoate, ethylene glycol dioleate, propylene glycol dicaprylate, propylene glycol di(capryl-caprate), propylene glycol dicaprate, propylene glycol dicaprylate, propylene glycol dioleate, neopentyl glycol dicaprate, neopentyl glycol dicaprylate, neopentyl glycol diethylhexanoate,Examples of suitable oils include ester oils of fatty acids and polyhydric alcohols, such as glyceryl tricaprylate, glyceryl tricaprate, glyceryl triethylhexanoate, caprylic / capric triglyceride, glyceryl triisopalmitate, glyceryl triisostearate, trimethylolpropane triethylhexanoate, trimethylolpropane triisostearate, and pentaerythritol tetraethylhexanoate. Vegetable oils containing natural triglycerides as their main component, such as olive oil, safflower oil, rice oil, rice germ oil, jojoba oil, corn oil, and corn germ oil, can also be used.

[0013] These ester oils may be used alone or in combination of two or more. From the viewpoint of effectiveness, it is preferable to use one or two selected from cetyl ethylhexanoate and isononyl isononanoate.

[0014] The cleansing agent of the present invention contains 50% to 80% by mass of hydrocarbon oil and ester oil in total. If the combined amount of hydrocarbon oil and ester oil is less than 50% by mass, a good cleansing effect cannot be achieved. On the other hand, if the combined amount exceeds 80% by mass, a stable cleansing agent cannot be obtained.

[0015] The cleansing agent of the present invention contains 1% to 20% by mass of component (B) polyhydric alcohol. If the content is less than 1% by mass, a stable cleansing agent cannot be obtained. If the content is more than 20% by mass, makeup does not blend well, and good makeup blending effect cannot be achieved.

[0016] The polyhydric alcohol may be any one commonly used in cosmetics. Specific examples of polyhydric alcohols include 1,2-propanediol (propylene glycol), 1,3-butanediol (BG), 3-methyl-1,3-butanediol (isoprene glycol), 1,2-pentanediol, 1,2-hexanediol, 2,4-hexanediol, 1,2-octanediol, glycerin, dipropylene glycol, polyethylene glycol, diglycerin, and sugars such as sucrose, erythritol, sorbitol, xylitol, maltitol, and glycosyl trehalose. Among these, it is preferable to contain one or two selected from glycerin and 1,3-butanediol, and it is even more preferable to contain glycerin and 1,3-butanediol.

[0017] The component (C) used in the cleansing agent of the present invention, a mixed ester of (poly)glycerin with behenic acid and eicosane diacid, is a mixed ester synthesized from glycerin or polyglycerin with behenic acid and eicosane diacid. These mixed esters are not particularly limited as long as they are used in ordinary cosmetics, and commercially available products as cosmetic ingredients can be used. Specific examples of such products include Nomcoat HK-G, a mixed ester of glycerin with behenic acid and eicosane diacid (glycerin-behenic acid-eicosane diacid condensate), and Nomcoat HK-P, a mixed ester of polyglycerin with behenic acid and eicosane diacid (polyglycerin-behenic acid-eicosane diacid condensate) (both manufactured by Nisshin Oillio Group, Ltd.).

[0018] The number of moles of glycerin added in the polyglycerin-behenic acid-eicosanedioic acid condensate is preferably 2 to 20, and particularly preferably 5 to 15.

[0019] The mixed esters of (poly)glycerin with behenic acid and eicosanedioic acid may be used singly or in combination of two or more. From the viewpoint of effectiveness, it is preferable to use a polyglycerin-behenic acid-eicosanedioic acid condensate, and it is more preferable to use polyglyceryl-10 (behenic acid / eicosanedioic acid).

[0020] The blending amount of the mixed ester of (poly)glycerin with behenic acid and eicosanedioic acid in the cleansing agent of the present invention is not particularly limited relative to the total amount of the cleansing agent, but is preferably 0.01% by mass or more, more preferably 0.1% by mass or more, preferably 10% by mass or less, more preferably 8% by mass or less, preferably 0.01% by mass or more and 10% by mass or less, more preferably 0.1% by mass or more and 8% by mass or less.

[0021] The cleansing agent of the present invention contains 0.01% by mass or more but less than 1% by mass of component (D), a nonionic surfactant with an HLB value of 12 or higher. If the amount is less than 0.01% by mass, a stable cleansing agent cannot be obtained. If the amount is 1% by mass or more, makeup does not blend well, and good makeup blending effects cannot be achieved.

[0022] Examples of such nonionic surfactants include polyglycerin fatty acid esters, fatty acid polyoxyethylene glyceryl, polyoxyethylene alkyl ethers, etc. Here, the HLB (hydrophile-lipophile balance) value generally indicates the affinity of a nonionic surfactant to water and oil, and can be determined by the Griffin method.

[0023] Examples of polyglycerin fatty acid esters include polyglyceryl-10 isostearate (HLB value: 14), polyglyceryl-10 oleate (HLB value: 13), polyglyceryl-6 oleate (HLB value: 12), polyglyceryl-10 dioleate (HLB value: 12), polyglyceryl-10 distearate (HLB value: 12), polyglyceryl-10 stearate (HLB value: 14), polyglyceryl-10 myristate (HLB value: 15), polyglyceryl-4 laurate (HLB value: 10), polyglyceryl-6 laurate (HLB value: 14), and polyglyceryl-10 laurate (HLB value: 14.8).

[0024] Examples of fatty acid polyoxyethylene glyceryl include PEG-15 glyceryl stearate (HLB value: 13), PEG-20 glyceryl stearate (HLB value: 14), PEG-30 glyceryl stearate (HLB value: 15), PEG-40 glyceryl stearate (HLB value: 16), PEG-15 glyceryl isostearate (HLB value: 12), PEG-20 glyceryl isostearate (HLB value: 13), PEG-25 glyceryl isostearate (HLB value: 14), PEG-30 glyceryl isostearate (HLB value: 15), PEG-40 glyceryl isostearate (HLB value: 16). : 15), PEG-50 glyceryl isostearate (HLB value: 16), PEG-60 glyceryl isostearate (HLB value: 16), PEG-30 glyceryl diisostearate (HLB value: 12), PEG-60 glyceryl diisostearate (HLB value: 14), PEG-50 glyceryl trioleate (HLB value: 12), PEG-60 glyceryl trioleate (HLB value: 13), PEG-50 glyceryl triisostearate (HLB value: 12), PEG-60 glyceryl triisostearate (HLB value: 13), PEG-9 glyceryl laurate (HLB value: 12), etc.

[0025] Examples of polyoxyethylene alkyl ethers include polyoxyethylene cetyl ether ceteth-12 (HLB value: 12), ceteth-15 (HLB value: 13), ceteth-17 (HLB value: 13), ceteth-20 (HLB value: 14), ceteth-25 (HLB value: 15), and ceteth-30 (HLB value: 15); and polyoxyethylene stearyl ethers include steareth-15 (HLB value: 12), steareth-20 (HLB value: 13), and steareth-25 (HLB value: 15). :14), steareth-30 (HLB value:15), steareth-40 (HLB value:16), polyoxyethylene lauryl ethers laureth-9 (HLB value:12), laureth-10 (HLB value:12), laureth-12 (HLB value:13), laureth-15 (HLB value:14), laureth-20 (HLB value:15), laureth-25 (HLB value:15), laureth-30 (HLB value:16), laureth-50 (HLB value:17), polyoxyethylene behenate These include the diethyl ethers Beheneth-20 (HLB value: 12) and Beheneth-30 (HLB value: 14), the polyoxyethylene phytosteryl ethers PEG-20 phytosterol (HLB value: 12), PEG-25 phytosterol (HLB value: 13), and PEG-30 phytosterol (HLB value: 14), and the polyoxyethylene cholesteryl ethers Cholesterol-20 (HLB value: 12), Cholesterol-24 (HLB value: 13), and Cholesterol-30 (HLB value: 14). and polyoxyethylene isoalcohol ethers such as isoceteth-15 (HLB value: 13), isoceteth-20 (HLB value: 14), isoceteth-25 (HLB value: 15), isosteareth-15 (HLB value: 12), isosteareth-20 (HLB value: 13), isosteareth-25 (HLB value: 14), octyldodeceth-16 (HLB value: 12), octyldodeceth-20 (HLB value: 13), and octyldodeceth-25 (HLB value: 14).

[0026] In the present invention, among these nonionic surfactants, it is preferable to use one or more selected from fatty acid polyoxyethylene glyceryls, and it is even more preferable to use PEG-20 glyceryl isostearate from the viewpoint of effectiveness.

[0027] In addition to the essential and optional components described above, the cleansing agent of the present invention may contain optional components used in ordinary cosmetics and quasi-drugs to the extent that the effects of the present invention are not impaired. Specific examples of such optional components include oily components other than those described above, surfactants, thickeners, preservatives, fragrances, moisturizers, antioxidants, anti-inflammatory agents, and antibacterial agents.

[0028] The formulation of the cleansing agent of the present invention is not particularly limited, and may be any of liquid, gel, solid, semi-solid, etc. From the viewpoint of ease of use, a gel form is preferred. [Example]

[0029] Examples of the cleansing agent of the present invention are shown below. These examples are merely examples of the present invention and are not intended to limit the scope of the present invention. The blend amounts are expressed in mass % unless otherwise specified.

[0030] The evaluation methods for the examples and comparative examples of the present invention are described below.

[0031] The cleansing agents of the Examples and Comparative Examples shown in Table 1 were produced by conventional methods. These Examples and Comparative Examples were evaluated as follows. The results are shown in Table 1.

[0032] [Evaluation items and criteria] Three expert panelists conducted a test on their arms, giving absolute ratings for each item according to the following evaluation criteria, and then consensus-based judging based on the following criteria. The panelists also applied a standardized lipstick and waterproof eyeliner to their arms beforehand and made the evaluation. <Makeup compatibility> Using 0.1 g of the cleansing agent of each Example and Comparative Example, the cleansing agent was applied with a finger with uniform pressure 10 times, and then the makeup compatibility was evaluated as follows. (Judgment criteria) Very good ◎ Good 〇 Somewhat bad △ Bad × <Moisturizing feeling after rinsing> After the above evaluation, the cleansing agent was washed off with running water for 10 seconds, and then the moisturizing feeling of the skin was evaluated. (Judgment criteria) Very good ◎ Good 〇 Somewhat bad △ Bad ×

[0033] [Table 1]

[0034] As shown in Table 1, the cleansing agent of the present invention blended well with makeup and provided an excellent moisturizing feeling after rinsing.

Claims

[Claim 1] A cleansing agent containing the following (A) to (D): (A) 50% by mass or more and 80% by mass or less of hydrocarbon oil and ester oil in total (B) Polyhydric alcohol: 1% by mass or more and 20% by mass or less (C) Mixed ester of (poly)glycerin with behenic acid and eicosanedioic acid (D) 0.01% by mass or more but less than 1% by mass of a nonionic surfactant with an HLB of 12 or more

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