Ingredients: citric acid, isopropyl alcohol, sodium benzoate, urea, glycerin, panthenol. The product creates an unfavorable environment for the growth and spread of fungus, reducing the PH balance of the nail. Step 1: File the nail surface once a week. Discard the file after use. Apply the solution to the affected nail once a day. Repeat the treatment for 3 weeks. Step 2: Apply the solution to the affected nail once a week for 9 months or until the nail is no longer discolored. At the end of the treatment, the level of nail discoloration is reduced. When the affected nail grows back, it no longer shows signs of discoloration and regains its healthy appearance.