Strength fortifying with biotin. New. Strengthens, reinforces and hardens nails. The art of the manicure. Perfected. Our champion of strengthening. Our new strength boosting formula, infused with biotin, helps reinforce for less weak and brittle feeling nails. The result: a beautiful manicure due to strong nails more resistant to peeling, chipping & breakage. Essie Cares: This cardboard carton uses wood and paper pulp from responsibly managed forests that respect people and nature. FSC: Mix - Packaging. www.essie.com. Made in USA of US and/or imported ingredients.