Kao Corporation

Shinobu Nagase

Kenji Arai

Koichi Nakamura

Yoshinori Nishizawa

Akira Kiyomine

Bernd Nocker

Satoshi Shibuichi

Hisateru Tanabe

Hiroyuki Suzuki

Hitoshi Sakaguchi

Kenichi Morita

Yukihiro Kondo

Kenichi Matsunaga

Masahiko Ogawa

Takashi Ito

Takeshi Iizaki

Naohisa Kure

Masakazu Yamaguchi

Adam Schrott

Masato Oshika

Tetsuya Kawai

Haruna Suzuki

Akira Mamada

Kyoko Kuramoto

Azusa Nishimura

Chihiro Saegusa

Yusuke Ezawa

Firdausi Afwa

Akiko Shibuya

Stephanie Herlambang

A multi-agent type hair treatment agent comprising a first composition containing component (A) and component (B); and a second composition containing component (C), wherein the weight ratio (H)/(C) of component (H) to component (C) in the second composition is less than 1. A hair treatment method comprising the steps of applying and rinsing the first composition to hair (i) and then applying the second composition to hair (ii).

Multi-agent type hair treatment agent

A method for treating hair, in which using as a boundary a depth X % in a range of 5% to 80% from the surface of hair toward the center along the long diameter axis extending through the center of the cross-section of hair, hair is divided into an A layer (a portion of a continuous color from the surface of hair to the depth X %) and a B layer (a portion including the center and having a continuous color different from the A layer, in which the depth from the surface of hair exceeds X %) and at least one value of &#x394;E*, &#x394;h and &#x394;C* between the color of the A layer and the color of the B layer is adjusted to 3 or more to change the hue and the color tone of hair appearance depending on viewing angle of the hair. A method for dyeing hair, having Step (I) of dyeing hair with a two-part permanent hair dye agent, and Step (II) of dyeing hair with a hair dye agent comprising a dye selected from (A-1) to (A-8). 

Method for treating hair

A method for acquiring hair characteristic data includes an image acquiring step and a data acquiring step. The image acquiring step acquires a cross-sectional image of a human hair, in which plural types of fibrous tissues (ortho cell, para cell) constituting cortex cellscontained in the human hairare visualized so as to be distinguishable from each other. The data acquiring step acquires numerical information indicating a distribution state of the visualized plural types of fibrous tissues (ortho cell, para cell) from the cross-sectional image.

Method for acquiring hair characteristic data and apparatus for acquiring the same

A relation equation between wave information on unpermed hair strands and evaluation values of appearance of whole hair selected from among gloss of the whole hair, order of alignment of the hair strands, and frizziness of the hair strand is acquired from a plurality of subjects. Based on the relation equation, the appearance of whole hair of an arbitrary subject is evaluated from wave information on a hair strand of the arbitrary subject. This allows an objective evaluation of the gloss of whole hair, the order of alignment of hair strands, or the frizziness of the hair strand by a simple technique, and also allows an objective evaluation corresponding to cosmetic specialists' evaluations in terms of equivalent age.

Hair evaluation method and system

This invention relates a hair cosmetic composition, which comprises (A) glycine or alanine, (B) an &agr;-hydroxy acid, &bgr;-hydroxy acid, 1,2-dicarboxylic acid, 1,3-dicarboxylic acid or aromatic carboxylic acid, and (C) a cationic surfactant. The hair cosmetic composition is excellent in the effect of improving optical or mechanical properties of hair.

Hair cosmetic compositions containing glycine and alanine

This invention relates to a hair cleansing composition, which comprises (A) 0.01 to 20 wt. % of glycine or alanine, (B) 0.01 to 5 wt. % of an &agr;-hydroxy acid, &bgr;-hydroxy acid, 1,2-dicarboxylic acid, 1,3-dicarboxylic acid or aromatic carboxylic acid, and (C) 5 to 40 wt. % of an anionic surfactant selected from an alkylsulfuric acid salt, an alkylethersulfuric acid salt or an N-alkylamidoalkanolsulfuric acid ester salt. The hair cleansing composition is excellent in the effect of improving optical or mechanical properties of hair.

Hair cleansing compositions containing glycine and alanine

The invention relates to a hair treatment composition comprising (a) a guanidium salt, (b) an alkalizing agent other than the guanidium salt and (c) a silicone. The use of the hair treatment composition permits brightening the color tone of the hair or dyeing the hair in good shades from a bright shade to a deep shade. The composition scarcely damages the hair, gives off little irritating odor and has low irritativeness to the scalp.

Hair treatment composition comprising alkalizing agent

The object of the invention is a new isomer mixture of 3-hydroxybutyl monothioglycollate and 3-hydroxy-1-methyl propyl monothioglycollate in a weight proportion of about 1.5:1 to 4:1, preferably about 2:1 to about 3:1, comprising less than 5%, preferably less than 2% by wt., of 1,3-butanediol thioglycollate, and its use as the sole or main reducing agent in compositions for permanent waving of human hair. The compositions have reduced smell, good waving properties and an extremely low sensitizing potential on human skin.

1,3-butanediol thioglycollate isomer mixture and permanent waving

The object of the invention is a composition for permanent waving of human hair comprising, as sole or main reducing agent one or several polyglycol monothioglycollates or lactates of the general formula ##STR1## wherein R denotes a hydrogen atom or a methyl group, X represents an ethoxy or propoxy group, and n is a number from 2 to 5. These compositions have a low characteristic smell, good waving properties, and an extremely low skin sensitizing potential.

Composition for permanent waving of human hair

Growing community of inventors

Tokyo, Japan

Shinobu Nagase