Hair treatment method
AssigneeKao Corporation
InventorsMasaki Fukuhara, Hiroko Okabe
Life of this patent
Estimating the term…
Abstract
A method for treating hair, comprising steps 1 and 2 below: (step 1) applying a hair dye composition to hair to dye the hair; and (step 2) applying a hair treatment agent to the hair subjected to hair dyeing in the step 1, the hair treatment agent comprising the following components (A), (B) and (C) and having a pH of 4 or less or 8 or more: (A) an epoxy-aminosilane copolymer which is a reaction product of the following compounds (a) to (d): (a) a polysiloxane having at least two oxiranyl groups or oxetanyl groups; (b) a polyether having at least two oxiranyl groups or oxetanyl groups; (c) an aminopropyltrialkoxysilane; and (d) a specific primary and secondary amines; (B) water; and (C) a pH adjuster.
Claims11
A method for treating hair, the method comprising:
- (1) applying a hair dye composition to hair to dye the hair;
- and
- (2) successively applying a hair treatment agent to the hair subjected to hair dyeing in the applying (1), wherein the hair treatment agent has a pH of 4 or less and comprises the following components:
- (A) polysilicone-29 in an amount of 0.5% to 2% by weight;
- (B) water;
- (C) a pH adjuster which is one or more selected from the group consisting of phosphoric acid, succinic acid, lactic acid, malic acid and citric acid;
- and
- dipropylene glycol.
A method for improving chroma of a color of dyed hair, the method comprising carrying out (2) on hair after hair dyeing treatment:
- (2) successively applying a hair treatment agent to hair after hair dyeing, wherein the hair treatment agent has a pH of 4 or less and comprises the following components:
- (A) polysilicone-29 in an amount of 0.5% to 2% by weight;
- (B) water;
- (C) a pH adjuster which is one or more selected from the group consisting of phosphoric acid, succinic acid, lactic acid, malic acid and citric acid;
- and
- dipropylene glycol.
Dependencies are inferred from the claim text.