OPI are currently one of the biggest manufacturers of nail products and are known worldwide. They sell in over 103 countries and are constantly expanding. Also they research into trends and release collections and core shades to fit the trends. All of their products are equally high quality and fit the exact same standard. They sell over 55,000,00 bottles of lacquer and treatments each year which stands to prove the success and demand of their products. OPI produced high quality and highly pigmented shades they carry a huge range of shades and are constantly adding more collections and core shades. OPI Nail Envy Sensitive & Peeling contains antioxidant vitamin E and emollient-rich kukui nut oil Makes even the weakest of nails, strong and ready to take on the day OPI Nail Envy also helps your nails to grow consistently. Apply two coats to start with and then after that apply one coat every other day. You can also use Nail Envy over OPI lacquers.