A
hair treatment composition which comprises an
aqueous solution or an
aqueous dispersion of at least one quatenary
ammonium salt (A) represented by the general formula (I), (2) or (3):whereinRa represents an
organic group containing 6 to 32 carbon atoms,Rb and Rc are the same or different and each represents an
organic group containing 1 to 32 carbon atoms,Rd represents an
organic group containing 1 to 4 carbon atoms, andQ- represents an amoni
acid anion; whereinX1 represents an ester group;R5 represents an
alkyl, alkenyl or hydroxyalkyl group and R6 represents an alkylene, alkenylene or hydroxyalkylene group, the sum of carbon atoms contained in R5 and R6 being 6 to 32,R7 and R8 are the same or different and each represents a group of the formula R5-X1-R6-, an
alkyl group containing 1 to 4 carbon atoms or a hydroxyalkyl group containing 2 to 4 carbon atoms,R9 represents an
alkyl group containing 1 to 4 carbon atoms or a hydroxyalkyl group containing 2 to 4 carbon atoms, andQ- represents an
amino acid anion; whereinX2 represents an
amide group,R13 represents an alkyl, alkenyl or hydroxyalkyl group and R14 represents an alkylene, alkenylene or hydroxyalkylene group, the sum of carbon atoms contained in R13 and R14 being 6 to 32,R10 and R11 are the same or different and each represents a group of the formula R13-X2-R14-, a group of the formula R5~X1-R6-, an alkyl group containing 1 to 4 carbon atoms or a hydroxyalkyl group containing 2 to 4 carbon atoms,X1 represents an ester group, R5 represents an alkyl, alkenyl or hydroxyalkyl group and R6 represents an alkylene, alkenylene or hydroxyalkylene group, the sum of carbon atoms contained in R5 and R6 being 6 to 32,R12 represents an alkyl group containing 1 to 4 carbon atoms or a hydroxyalkyl group containing 2 to 4 carbon atoms, andQ- represents an
amino acid anion is provided.