O.P.I Nature Strong - Base Coat 15mlDescription How to use Ingredients This multi benefit Botanical Base Coat can be worn alone as a treatment or as a part of Nature Strong system. This natural origin base coat is boosted with gentle skincare ingredients for healthy and smooth looking nails. OPI Nature Strong is OPI's first natural origin nail polish, which lasts up to seven days of wear and shine. Use your natural origin base coat with Nature Strong natural origin nail polish and