Set of 46 Decals WATERSLIDE NAIL DECALS Works with Regular Nail Polish, Gel or Acrylic Made In USA Simple & easy to use - with brilliant looking results. Nails must be painted white or a light color for decals to show properly. After cutting, water-slide nail decals must be dipped into water using tweezers to remove the backing. A clear topcoat has to be use on decals to hold the decals and to protect the decals on nails. You will need to reapply clear topcoat every two days to keep protecting the decals.