Reinforce weakened hair with the kerastase resistance bain force architecte shampoo an everyday shampoo for brittle and damaged hair the strengthening shampoo contains complexe ciment cylane which is a blend of intra cylane ceramide r and pro keratin that works to nourish and strengthen the hair this reparative formula will target damage and rebuild the hairs internal substance helping it to feel healthier thicker and revitalised damaged hair will feel restored as the resistance stren