The nail corrector pen cleans excess nail polish quickly & effortlessly. This innovative tool is ideal for manicure retouching in between salon visits. It is a must-have item! How to use Essie Nail Corrector Pen: Swipe the pre-moistened applicator tip around cuticles & fingertips to remove excess polish. Wipe the applicator clean with tissue & reuse as needed. Upon the first use it may be necessary to apply more pressure on applicator tip in order to fully moisten with corrector fluid.