Kao Corporation

Masaki Fukuhara

Masayoshi Nojiri

Hiromi Saimiya

Yasuyuki Fujii

Kyoko Kuramoto

Takafumi Nishi

Hiromoto Mizushima

Masakazu Yamaguchi

Akira Kiyomine

Masakatsu Takahashi

Mitsuhiro Katashima

Tomohiro Onda

Hideyuki Abe

Atsushi Nakashimada

Kazuo Maki

Toru Yamaguchi

Tsuyoshi Kimura

Hiroaki Warita

Ryoichi Haruki

Kosuke Takeda

A hair dye composition comprising the following components (A), (B) and (C) and having pH (25&#xb0; C.) of 7.5 or more and 12 or less: 

Hair dye composition

A multi-component hair dye composition excellent in bleaching property and dyeing property including components (a), (b) and (c) which are mixed upon use:(a) one or more kinds of glycylglycine derivative represented by general formula (1) and having two or three amino acid residues, or salts thereof; [wherein X represents a bivalent hydrocarbon group having 1 to 4 carbon atoms which may be substituted with a hydroxyl group, or an amino acid residue; Y represents an amino acid residue, or a bivalent group represented by general formula (2): (wherein symbol -* represents a bond that binds to an adjacent carbonyl group or oxygen atom); R represents a hydrogen atom, or a monovalent hydrocarbon group having 1 to 4 carbon atoms in which the hydroxy group may be substituted; and m and n each represent 0 or 1, provided that when both m and n represent 1, X is not an amino acid residue]; (b) an alkali agent; and c) an oxidizing agent; wherein formula (I) is: 

Multi-component hair dye composition

A non-oxidative hair dye composition containing the components (a) and (b): (a) one or two or more kinds of a glycylglycine derivative represented by the following formula (1) and having two or three amino acid residues or salts thereof, and wherein Y represents an amino acid residue or a bivalent group represented by the formula (2); and (b) a direct dye; Wherein symbol * and R, X, n and m are defined in the claims and in the disclosure.

Non-oxidative hair dye composition

Provided is a hair dyeing composition, containing a first part containing (a) a nitrogen-containing compound expressed by the general formula (1) or a salt thereof and a second part containing a component (b) of an oxidizing agent, wherein a pH upon use is 7.5 to 12, wherein Rand Rto Rrepresent H, a hydroxy group, and an alkyl group with C12 or less optionally having a substituent, Rrepresents a hydroxy group, &#x2014;R or &#x2014;OR, in which R means the same as Rto R, and two or more of Rto Rmay be taken together to form a 3 to 8 membered-ring optionally having a substituent.

Hair dyeing composition

Provided is a hair dyeing composition, containing a first part containing (a) a nitrogen-containing compound expressed by the general formula (1) or a salt thereof and a second part containing a component (b) of an oxidizing agent, wherein a pH upon use is 7.5 to 12, wherein n=1 or 2, Rand Rto Rrepresent H, a hydroxy group, and an alkyl group with C12 or less optionally having a substituent, Rrepresents a hydroxy group, &#x2014;R or &#x2014;OR, in which R means the same as Rto R, and two or more of Rto Rmay be taken together to form a 3 to 8 membered-ring optionally having a substituent.

Provided are a hair bleach composition, hair dye composition and a hair treatment additive having excellent bleaching power, capable of dyeing the hair with a bright and good color, and less damaging to the hair and less irritating to the scalp. Described specifically, they are a two-part hair bleach composition, which contains (a) a nitrogenous compound represented by the following formula (1) or (2): or salt thereof, or (A) a nitrogenous compound having a solubility parameter log P in octanol/water ranging from &#x2212;1 to 4 and a hydrogen peroxide remaining ratio of from 5 to 90%, or salt thereof, (b) an oxidizing agent, and optionally (c) an alkali agent and, after mixing, has a pH of from 7.5 to 12; a two-part hair dye composition comprising (a) or (A), (b) and (c) and further (d) an oxidation dye or direct dye; and an additive used therefor.

Two current electrodesandare arranged on a circumference of a subject, a distance between the two current electrodes being sufficiently shorter than a circumferential length of the subject. A current sourcepasses a current between the two current electrodes. A measuring electrodeis arranged adjacent to one of the two current electrodesand. A measuring electrodeis arranged substantially opposite to the two current electrodesandacross the subject. A voltmetermeasures a voltage generated between the measuring electrodesand. A body fat computing unitcomputes the quantity of subcutaneous fatof the subjectaccording to the voltage measured with the voltmeter

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Tokyo, Japan

Masaki Fukuhara