Mango Natural Nail Strengthener 0.5 fl oz/15 ml CM05NN 22006 is designed for thin, weak nails prone to breaking and/or splitting. Instantly hardens the nail plate providing a protective barrier. Non-allergen formula assists in hardening nail keratin adding to nail strength. Prevents brittleness and peeling while also limiting staining and yellowing. This product is also a UV absorber.