Clinically Advanced Formulated with Clinically Tested Cynatine Maintenance of Strong Hair & Nails Supports Healthy Skin A Dietary Supplement NOW Solutions Clinically Advanced Hair, Skin & Nails is formulated to nurture hair, skin, and nails form the inside. This product features Cynatine HNS, a revolutionary patented and bioavailable form of solubilized Keratin that can help you maintain full, lustrous hair and nails that are strong and flexible. Cynatine HNS can also help the skin to retain its youthful moisture and elasticity, as well as battle signs of aging associated with free radicals. This product also has the critical nutrients, plus Hydrolyzed Collagen and Hyaluronic Acid, necessary for the support and maintenance of the skin's healthy and youthful appearance.