Cover It Up Powders can cover any imperfection on the natural nail. You can use it to extend the nail bed on nail biters. Easily Covers and Extends the Nail Bed Creating an illusion of a Long Slender Beautiful Nail. Use to Create the Nail Bed First when doing the Reverse Technique of Acrylic Application. Cover It Up Powders can be used with Nail Forms to Sculpture an entire nail, or with nail tips as overlays. Super strong and durable.