OPI Gelcolor Soak off gel polish applies just like traditional nail polish, but gives your nails a super shiny finish that lasts up to two weeks. You just simply apply the gel like regular nail polish and cure it under a UV or LED lamp.No DBP (Dibutyl Phthalate), Toluene, and Formaldehyde.Applying OPI GelColor requires a special base coat, color, top coat, and curing light.