Alline Procap Hair Growth Capsule contains water soluble keratin associated to 11 vitamins and 3 minerals. The keratin chosen for Alline procap is natural. The exclusive manufacturing process used to extract keratin allows simultaneously to preserve its complete natural amino acid composition and makes it water soluble. This latter allows an optimal assimilation by the body. Ingredients include keratin 250 mg along with zinc, iron, Vitamin C, vitamin A, Vitamin B3, Vitamin E, Vitamin B2, Copper, Vtamin B5, B6, B1, folic acid, D-biotin, Vitamin B12, etc.