<p>Soy Protein Shampoo naturally defends hair from the harmful effects of the environment, while at the same time working to retain the hair's moisture.  It nourishes hair, giving it strength, softness and body. European studies have found that soy protein reinforces hair and stimulates growth.  Soy offers a "complete" protein profile containing the entire essential amino acids. This botanically rich shampoo with soy is designed to restore and strengthen chemically altered, dry, weak or damaged hair. (12 oz)</p>