OPI are currently one of the biggest manufacturers of nail products and are 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 have collaborated with Mariah Carey to create an absolute A-List range of products. They released 18 shades in total and a gold and silver opulent top coat. Shade: A pure jet black liquid sand. These all have OPI's high quality nail lacquer formula. Long Wearing formula which lasts up to 7 days no chipping. 1 coat will give a sheer finish. 2-3 coats will give a full coverage finish.