OPI NAIL ENVY now with a vegan formula & tri-flex technology for a liquid shield of layer-building strength. Provides maximum strengthening with hydrolyzed wheat protein and calcium for harder- longer- stronger- natural nails! Ideal for weak- damaged nails. Benefits: Contains Vitamin A- E- C- Biotin- and Calcium. See 95% stronger nails in just one week. Nails feel nourished after one week. New and improved Vegan Formula.