Essie Fill the Gap Hydrate your nails with this Essie Fill the Gap polish designed to prevent brittleness & breakage. Containing fine silk particles & natural mica to smoothen out deep ridges & conceal imperfections. Containing Yucca extracts that moisturise & reduce inflammation. Directions for use: Apply as a base coat prior to applying Essie Nail Polish. May also be used alone on natural nails.