The perfect kit for a getaway or weekend away, the Keratase Strengthening Duo combines the benefits of Bain de Force and Ciment Anti-Usure to give weak, tired hair loads of lift and vitality. Formulated with a dual action formula; Vita-Ciment and Vita Topseal work together to strengthen and nourish weakened hair. This pack contains the following products: Kérastase Bain de Force – 250ml Kérastase Bain de Force is a reinforcing and refreshing shampoo for weakened hair. Its strengthening formula will gently cleanse whilst adding body and vitality to leave your hair stronger and shinier and with improved health. Kérastase Ciment Anti-Usure – 200ml Kérastase Ciment Anti-Usure is the first double reconstruction treatment for weakened hair with Topseal protection. It works to rebuild your hair’s internal strength and leaves it full of body, vitality and shine whilst feeling incredibly soft. Brand: Kerastase. Hair Concern: All Hair types.