Recolution Permanent Gel Polish may wrinkle or shrink back on the nail plate if too much product was applied in each application, and/or it was not cured for the full time after each coat. LCN tunnel light and LCN LED light units have different curing times.  Recolution polish must be applied in two thin coats, the first coat will almost appear sheer or translucent, the second coat will give it the full coverage. Be sure to cure for the full time required on each light unit after each coat. Tech Tip:  use the continuous timer function on your light unit, to eliminate any issues with the light unit turning off just as your client puts her hand into the light unit.