FNUG UNDER COVER BASE COAT with nourishing caviar extract. It takes preparation to keep lovely, varnished nails looking good. A good Base Coat is imperative and the best way of achieving this is by using FNUG’s Under Cover Base Coat. Not only does it contain a nourishing caviar cocktail, but the Under Cover Base Coat also smoothes out any small ridges or knocks in your nails. A quick-drying, protective base also helps the nail varnish to ‘grip’.