OPI Nail Envy Nail Strengthener - Pink to EnvyNow formulated with Tri Flex Technology, a liquid shield that reinforces the nail with layer building strength. This vegan formula* strengthens and protects against chipping, peeling, and splitting, resulting in healthy looking, vibrant nails everyone will envy. Layer this sheer rosy pink nail strengthener onto nails to give them a subtle tint that makes your natural nail color look better than everrr. It's the perfect au naturale look. How to use: