The present invention is a hair treatment composition containing components (a) and (b): (a) a compound having 2 or 3 amino acid residues and represented by general Formula (1), or a salt thereof [in the formula, X denotes a divalent hydrocarbon group having 1 to 4 carbon atoms, which may be substituted with a hydroxy group, or a specific amino acid residue, Y denotes a specific amino acid residue or a divalent group represented by chemical Formula (2) (in the formula, -* denotes a direct bond bonding to an adjacent carbonyl group or oxygen atom), R denotes a hydrogen atom or a monovalent hydrocarbon group having 1 to 4 carbon atoms, which may be substituted with a hydroxy group, m and n denote 0 or 1, and when m and n are simultaneously 1, X is not an amino acid residue] and (b) an aliphatic carboxylic acid having no greater than 8 carbon atoms or a salt thereof.
