Experience deep down hair hydration with this protein shampoo with a natural keratin base and a natural pH that acts effectively to restore dry hair,giving back body and shine. Perfect for chemically treated hair. FORMULA. Hydrolyzed keratin: a molecule that gives a new lease of body and life to hair when washing. USE. Wet your hair and apply the shampoo. Massage gently for a few moments before rinsing off with plenty of warm water.