Revlon Flex Keratin Shampoo is a strengthening shampoo for fragile hair. It contains ginseng, an effective toning and antioxidant agent that stimulates the scalp. Keratin nourishes and gives vitality to the hair, and it also contains menthol, which provides a great sensation of freshness. Apply the shampoo to your wet hair, massage until it lathers, and rinse gently, taking care with fragile hair.