Sixteen Nail Polish 50'' Fast Dry 423 11ml is a long-lasting nail polish with rich coverage in more than 200 shades. Its rich color spreads evenly and gives a lasting effect, while its formula dries in just 50 seconds! Instructions for Use For best results, thoroughly clean your nails of any oil or old polish residue, and shape them with a file. If you want longer lasting and protective results, you can first apply a clear base coat and let it dry. Then, place the brush in the center of the nail and apply a layer of color, moving from the base to the tip, repeating on the sides. If necessary, apply a second layer for a more intense effect, letting the polish dry well between layers. Finish with a top coat for more shine and longer lasting results.