Vitavea Keratin Biotin: Your hair is tired, damaged by coloring or lacking volume. The innovative formula of this hair and nail fortifier nourishes the hair fiber and helps bring vitality and health to the hair. The capsules based on biotin and keratin, a fibrous protein that makes up 95% of our hair, offer a one-month program for more elasticity, shine, and strength. By combining keratin and biotin with selenium as well as zinc and B vitamins, this formula brings together a selection of ingredients that contribute to the health of hair and nails. Keratin is also a major component of the nail and can therefore contribute to its growth and the recovery of beautiful nails.