Kerastase Resistance Bain de Force is the perfect shampoo to use when restoring hair. This shampoo works beautifully on hair that is puffy; it is also great to use if you have dry hair. As you continue to use Kerastase Resistance Bain de Force shampoo, the texture of your hair will change for the better. This shampoo contains Vita-Ciment Complex, a proprietary formula that has been shown to strengthen the hair. Kerastase Resistance Bain de Force should be applied to wet hair. It is the perfect shampoo for weakened or fragile hair.