Resistance Bain Extentioniste from Kerastase is a strengthening shampoo that boosts strong hair growth starting at the roots. Weakened hair prone to breakage is strengthened as its internal structure is rebuilt and sealed to provide greater protection throughout its growth. This purifying shampoo is enriched with Creatine R, an active complex designed to boost resilience and elasticity, and Taurine, an amino acid that promotes a healthy scalp. Hair is thoroughly cleansed to reach its ideal healthy length in perfect condition.