OPI Nail Envy Nail Treatment Original Formula 15ml helps to create a shield on the nails whilst reinforcing the protective barrier of the nails. The nail treatment formula helps to add moisture back into the natural nail. Formulated with Vitamins A, E, C and B7 to achieve stronger, healthier nails. Use paired with the OPI Repair Mode treatment for even better results. OPI's nail care range have award-winning treatments that give you the fresh-out-of-the salon feeling. They have an array of products ranging from nail cream, nail hardener, nail files, nail buffers, nail strengtheners and much more. OPI offers the latest techniques combined with the finest ingredients to create salon standard products to help you care for your nails at home with outstanding results.