Always use a base coat to help your polish stick (least likely to chip), to strengthen your nails and help prevent any colour staining.
Extra Strength Base Coat Ingredients:
Butyl Acetate, Isopropyl Alcohol, Heptane, Ethyl Acetate, Trimethyl Pentenyl Diisobutyrate Tosylamide/Epoxy Resin, Polyvinyl Butyral, Nitrocellulose, Etocrylene, SD Alcohol 40B, CI42090 (PLUS SMALL AMOUNT OF COLOUR TINT - help to show the difference from top coat).