Introducing Hard as Nails strengthening protein serum that delivers deep restorative strength with lasting protection for your nails and cuticles. The concentrated, fast absorbing formula reinforces nails with hydrolyzed protein actives, strengthening resistance against damage and breaking. Unique delivery system of microcapsules are enriched with Vitamins A, C and E for extra energizing benefits. Apply daily on bare nails. In only 1 week, nails are strengthened, protected, and fortified to withstand the elements. The next generation of Hard as Nails, your nail clinic in a bottle! Size: 0.45 fl oz.