Kao Patents Cleanser

US 12,208,156 B2 Yuko Nagasaki, Katsushika-ku, Japan and Toshiaki Ozawa, Setagaya-ku, Japan. Kao, Tokyo.

A cleanser was patented by Kao researchers. It includes:

• a non-aerosol foaming container and,

• a liquid cleansing agent filled in the non-aerosol foaming container, wherein the liquid cleansing agent comprises the following components (A), (B), (C), and (D):

(A) least one member selected from the group consisting of lauric acid, myristic acid, palmitic acid, laureth-6 carboxylic acid, laureth-4 carboxylic acid, sodium cocoyl glutamate, and sodium polyoxyethylene lauryl sulfate;

(B) from 0.1 to 1.5 mass % of a water-soluble polymer comprising a repeating unit derived from acrylic acid and/or alkyl acrylate, wherein, in terms of a viscosity of a 1-mass % aqueous solution thereof, a ratio of viscosity v2 at a shear rate of 1.0×10−2 (s−1) to viscosity v1 at a shear rate of 1.0×10−1 (s−1) is v2/v1≥5;

(C) water and

(D) from 5 to 50 mass % of a polyol.