Fill the gap! Ridge Smoothing Base Coat by essie® hydrates aging nails and smoothes unsightly deep ridges while preventing brittleness and breakage. Replenishes and levels the nail plate with a special blend of strengtheners, conditioners, micro-fibers and natural fillers. Mica boasts natural reflective properties that help fill in extremely deep ridges and conceal imperfections. Yucca, the natural plant extract, helps moisturize and reduce inflammation. Creates an ultra-smooth base, allowing for maximum adhesion of nail polish. How to use: Apply as a base coat prior to applying nail polish. May also be used alone on natural nails.