Patent ID: 7988739

Claim:
A multi-component hair dye composition comprising as separated components (a), (b) and (c), wherein: (a) represents 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) represents at least one alkali agent; and (c) represents at least one oxidizing agent; wherein components (a), (b) and (c), when mixed, produce a composition that has a pH ranging from 9 to 11.