2 x kerastase masque force architecte 200ml reconstructing masque that intensely replenishes brittle and damaged hair masque force architecte reconstructs the hair fiber while intensifying its strength from root to end to use apply a small amount to lengths and ends of hair focusing on mid lengths to ends leave on for 5 10 minutes and rinse thoroughly for best results pair with kerastase bain force architecte for the ultimate reconstructing cleanser ciment anti usure as a conditioning tr