Nailine Amargo helps avoid the habit of biting your nails. The powerful bitter flavor, which lasts for several days, combats the habit of biting your nails, helping your nails grow healthy and strong. It is resistant to hand washing and can be used directly on nails or on a polish. Additionally, Nailine Amargo provides an effective treatment that helps keep nails hydrated and flexible. With Vitamin E and Calcium Panthotenate that provide hydration and are anti-oxidants. With UV filter to prevent discoloration and yellowing of the product. Instructions for use: External use.\ Apply one or two layers on the nails directly or on the polish twice a week until the nails return to their normal state.