Help to strengthen weak, damaged nails with OPI’s Nail Strengthener Treatment Original. Infused with Hydrolysed Wheat Protein and Calcium, the formula works to prevent nails splitting and peeling. The best-selling treatment aims to nourish and protect natural nails, leaving them feeling stronger and supporting the growing process. Can be used alone or applied as a base coat. INGREDIENTS Ethyl Acetate, Butyl Acetate, Nitrocellulose, Propyl Acetate, Tosylamide/Formaldehyde Resin, Isopropyl Alcohol, Triphenyl Phosphate, Trimethyl Pentanyl Diisobutyrate, Stearalkonium Bentonite, Camphor, Diacetone Alcohol, Ethyl Tosylamide, Benzophenone-1, Citric Acid, Hydrolyzed Wheat Protein, Dimethicone, Calcium Pantothenate, CI 60725 (Violet 2), CI 77891 (Titanium Dioxide).