Abstract: The invention relates to colorant compositions for the oxidative dyeing of keratin fibers comprising radical scavengers in the dyeing composition. The invention also relates to methods for reducing color formation outside of the keratin fiber during oxidative dyeing comprising using such compositions.

Abstract: The invention relates to colorant compositions for the oxidative dyeing of keratin fibers comprising an inhibiting system of radical scavengers and chelants in the dyeing composition. The invention also relates to methods for reducing color formation outside of the keratin fiber during oxidative dyeing comprising using such colorant compositions.

Abstract: The present invention provides a hair treatment composition (I) comprising the following components (a) and (b), or a hair treatment composition (II) comprising the following components (c) and (b), and a method for imparting elasticity to the hair using the composition: (a) an organic solvent; (b) at least one aromatic sulfonic acid selected from naphthalenesulfonic acids, azulenesulfonic acids, tetralin-sulfonic acids, indansulfonic acids and benzophenonesulfonic acids or salts thereof; and (c) a reducing agent.

Abstract: A long lasting hair-dye composition in solid stick form is described.

Abstract: The hair treatment composition of the present invention comprises (A) 2-benzyloxyethanol and (B) one or more polymers selected from the group consisting of anionic polymers, cationic polymers and amphoteric polymers. The hair dye composition of the present invention comprises (a) an acidic dye, (b) 2-benzyloxyethanol and (C) a water-soluble polymer compound.

Abstract: A hair dyeing process which comprises of steps of contacting the hair to be dyed with an aqueous solution of a metal salt that promotes melanogenses in air. Before or after the aforementioned step contacting the hair with a solution of 5,6-dihydroxyindole, rinsing the hair between the two contacting steps, maintaining the contact with the second-used solution until a desired darker color is obtained, rinsing or shampooing the hair, then contacting the hair with a solution of hydrogen peroxide until the desired color shade is obtained, and then again rinsing the hair.

Abstract: Cationic keratin derivatives which are obtained by reacting a part or whole of functional groups of keratin with a cationizing agent which contains in the molecule thereof a specific type of a group or groups and a quaternary nitrogen atom. The process for preparing such derivatives and a variety of cosmetics containing the same are also described.

Abstract: Dyestuff formulations which contain anionic, water-soluble dyestuffs or developable dyestuffs and salts of diaryl ether-sulphonic acids are suitable for the preparation of padding liquors, dyebaths and printing pastes.