NOW Foods Solutions Clinically Advanced Hair, Skin & Nails nourishes from within with Cynatine HNS, a bioavailable solubilized keratin designed to support lustrous hair, strong nails, and healthy-looking skin. This formula provides essential nutrients for skin hydration and elasticity, backed by GMP-certified manufacturing. Packaged in the USA by a family-owned company since 1968. Natural color variation may occur.