Kerasal Fungal Nail Renewal Treatment is a topical formula that is clinically reduce to rapidly improve the appearance of unsightly nails damaged by fungus or psoriasis. Kerasal Nail normalizes thickened nails, reduces nail discoloration, and softens and rehydrates brittle nails. Kerasal Nail has been developed by dermatologists in Sweden and is based on 15 years of targeted research and development.