PLUS a full spectrum of vitamins and minerals carefully blended to support your whole cycle. Iodine contributes to the normal production of thyroid hormones and normal thyroid function 3. SKIN, HAIR & NAILS COLLAGEN FORMATION - Vitamin C contributes to normal collagen formation for the normal function of skin SKIN, HAIR & NAILS - Zinc contributes to the maintenance of normal skin, hair and nails.