JP2000273495A - Cleansing material suppressing skin irritation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve irritation, dryness (less elution of keratin lipid/NMF) and use feeling (stiffening, rustling, made creaky). SOLUTION: This cleansing material is obtained by blending a soap of a 14-18C fatty acid with a basic amino acid/an inorganic alkali, a glycerol-based, sugar-based moisture keeping agent (used by 25-75 wt.%) and 0.01-1.0 wt.% polyelectrolyte as a water soluble polymer.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel skin-friendly cleaning agent, and responds to the recent increase in consumers with sensitive skin. Because of the detergency, safety,
The purpose is to provide a cleaning agent with excellent usability. The skin-friendly cleaning agent is composed of a fatty acid soap, a humectant, and a water-soluble polymer, but the novel skin-friendly cleaning agent provided in the present invention is gentle on the skin, has good lathering, and has good cleaning properties. It is characterized by having power and a good feeling of use. [0002] In the prior art, various cleaning techniques such as too strong detergency, rough skin (due to adsorbed residues), skin irritation, tightness, dry skin, and dryness are known. Problem. [0003] Soap detergents have the advantage of thoroughly washing the dirty sebum film to the pores and keeping the skin clean, while the disadvantages of irritation / drying and feeling of use (tension)・ Improvement of bulkiness / creaking is a technical issue. [0004] Based on the above-mentioned circumstances, the present inventors have conducted intensive studies, and as a result, the cleaning agent of the present invention, which has suppressed skin irritation, is a C ₁₄ -C ₁₈ fatty acid soap, a moisturizer. It was found that the composition was composed of an agent and a water-soluble polymer. Hereinafter, the present invention will be described in detail. [0005] The higher fatty acid soap composition has a high foaming power, but has a rough foam, lacks a creamy feeling, has a slimy feeling, has high skin adsorbability, has a bulky feeling, a firm feeling,
Penetrates into the subcutaneous tissue, skin irritation becomes due for any skin due to reduced skin barrier function, except for the following fatty acid soaps of lauric acid (C ₁₂ or less fatty acid soap), selective detergency, no skin persistent, skin symptoms Excellent in potassium palmitate, potassium stearate, mainly myristic acid soap, palmito oleic acid soap, oleic acid soap, isomyristic acid soap, isopalmitic acid soap, isostearic acid soap, etc. Linear, branched, saturated And unsaturated fatty acid soap. C ₂₀ or more fatty acid soaps have poor lather, temperature dependence of the viscosity (increase Nukutoki viscosity, decreases when cold viscosity) There are not good. As alkalis for neutralizing higher fatty acids,
Inorganic alkalis and basic amino acids are preferred. Potassium hydroxide, sodium hydroxide and lithium hydroxide are preferred as inorganic alkalis, and lysine and arginine are preferred as basic amino acids. Basic amino acid: inorganic alkali = 1: 10 to 10: 1,
The molar ratio is good, and the basic amino acid: inorganic alkali = 1: 6 to 6: 1, and the molar ratio is preferably. Basic amino acids and their combinations are effective in preventing and improving skin roughness and maintaining physiologically beautiful skin conditions. The humectant is a glycerin-based or saccharide-based polyol, and one or more of these are used. Suitable as humectants are monohydric alcohols such as glycerin, diglycerin, polyglycerin, sorbitol, maltitol, xylitol, trehalose, monosaccharides such as glucose, fructol, mannose, galactose, psicose, lactose, sucrose. Oligosaccharides such as sugar and maltose. 25% by weight to 75% of the above humectant
By using the weight%, the affinity between the humectant and water is increased, so that the intrusion of the irritating substance into the skin is blocked and irritation is suppressed. In addition, after washing with a high-grade fatty soap, it shows the properties of excellent skin feel, less residual and less feeling of use due to degreasing, leaving moisture on the skin. The water-soluble polymer is a polymer electrolyte, and one or more of them are used. Examples of the polymer electrolyte include sodium hyaluronate, sodium chondroitin sulfate, sodium alginate, sodium casein, xanthan gum, carboxyvinyl polymer, and carboxymethyl cellulose.
The compounding amount of the polymer electrolyte is 0.001 to 1.0 of the total amount.
% By weight. [0009] In addition to the above essential components, generally used components can be added to the detergent according to the present invention, if necessary. Such components include sebum components (squalane, wax esters, triglycerides, mono-
Diglyceride, phospholipid, cholesterol, cholesterol ester), intercellular lipid (sphingolipid, ceramide, cerebroside), NMF component (amino acid, lactate N)
a, PCA-Na, urea, Na citrate, mineral
・), Vitamins, hormones, nucleic acids, proteins, animal / plant extracts, coloring materials, flavors, chelating agents, antioxidants, clay minerals, preservatives / bactericides UV absorbers, powders, water-soluble polymers, etc. . Hereinafter, the present invention will be described specifically with reference to Examples, but the present invention is not limited to these Examples. DETAILED DESCRIPTION OF THE INVENTION [0012] cleanser according to the present invention is _C 14 _{-C 18}
It is composed of fatty acid soap, humectant, and water-soluble polymer, has good foaming, has appropriate detergency, has a good feeling in use, and provides a skin-friendly detergent.

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Claims (1)

Claims 1. A C ₁₄ -C ₁₈ humectant fatty acid soap in cleanser base mainly inhibited the skin irritation, which comprises blending a water-soluble polymer washed The detergent for neutralizing fatty acids is an inorganic alkali or a basic amino acid. The detergent according to claim 1. The humectant is a glycerin-based or saccharide-based polyol. Claims wherein one or more of these are used [Claim 1] [Claim 4] [Claim 4] The water-soluble polymer is a polymer electrolyte, and one or more of these are used The cleaning agent according to claim 1.