Benefits/Features Biorga Cystiphane Hair and Nails is a specialized dietary supplement that supports health & stimulates hair and nail growth in men and women. It combines the amino acids L-cystine & L-arginine, with vitamin B6 and zinc. Vitamin B6 contributes to the normal synthesis of cysteine. Zinc contributes to the maintenance of the normal condition of hair, nails & skin and to the protection of cells from oxidative stress. In addition, vitamin B6 and zinc contribute to the normal function of the immune system * Cystine is a sulfur-containing amino acid, which is one of the main components of hair, nails and skin. It is essential for the synthesis of keratin and stimulates hair growth ** Arginine is a non-essential amino acid that contributes to