Product Overview Designed for true staying power, Nicole by OPI Base Coat Plus 15ml helps protect nails & prevent staining. Apply to nails to create the perfect foundation before painting. Long-lasting & free from harmful ingredients, this base coat will keep your precious polish in place! With no formaldehyde, DBP or toluene, this base coat keeps nails healthy & happy. Use the exclusive OPI Perfect Stroke brush for even base coverage.