The Kérastase Resistance Therapiste Shampoo and Masque Duo is a two-step treatment process designed to transform dull, tired hair. The unique, advanced formulas provide essential nutrients and moisture to recover hair and leave it feeling silky smooth. E.N. The Set Contains: Kérastase Resistance Therapiste Bain Shampoo (250ml) Transform limp, lifeless hair with the Resistance Therapiste Bain, a shampoo with a unique jelly-like texture. Specially formulated with an innovative FIBRA-KAP™ formula to deliver keratin associated proteins (KAPs) to repair hair fibres and the internal architecture for healthy-looking, hydrated locks. Renews split ends and brittle strands by enveloping hair, increasing strength and protecting from further damage. Kérastase Resistance Therapiste Masque (200ml) Resistance Therapiste Masque is a butter-textured mask that deeply penetrates hair to restore strength and boost elasticity. Suitable for thick, extremely damaged and over-processed hair, the lightweight mask revitalises hair strands and locks in moisture so you can experience silky smooth, hydrated locks. Its FIBRA-KAP™ formula is enriched with six amino acids to replenish protein and promote strong, healthy hair.