OPI is currently one of the biggest manufacturers of nail products and is world-renowned. They sell in over 103 countries and are constantly expanding. Having access to limited research facilities means they are constantly up to date with formulas making sure that each of their products offers the same high quality as the next. Also, they research into trends and release collections and core shades to fit the trends. The fact that they sell over 55,000,00 bottles of lacquer and treatments each year stands to prove the success and demand of their products. OPI and Gwen Stefani have released another collaboration for the holidays, this is an early Christmas treat showing off a lot of spectacular new shades also releasing a nail effect collection. Love Is Hot & Coal - Turn the heat up with this deep grayish brown. This collection keeps OPI's high-quality formula. This collection is full of warming reds and gorgeous winter shades. Long-Wearing Lacquers. Up to 7 days wear with no chips.