Kérastase Résistance Bain Thérapiste is a gentle cleansing balm shampoo for severely to very severely structurally damaged hair. It envelops the hair fibres and prevents the roughened feeling during shampooing. The firm, creamy texture builds up the hair from the inside and significantly increases resistance and elasticity. The result is supple hair that shines healthily again. Application: Massage into wet hair and rinse thoroughly. Repeat if necessary.