-Clinically proven ingredients to reduce discoloration and thickness, as well as hydrate and exfoliate brittle nails, unlike traditional nail lacquer. -Combines the keratolytic properties of urea with hydrating propylene glycol and lactic acid to penetrate nail plates. -Fungal nail renewal formula improves nail appearance in over 90% of fungal nail sufferers with visible results in 2 days. -Kerasal is the most doctor recommended brand for improving the appearance of nails damaged by a fungal infection.