Gehwol Fusskraft Callus Softener has 25% urea. This liquid product is changed by means of a dispenser system into a fine-pore foam containing concentrated urea and lactic acid. It does not use a propellant. It is used for precise and rapid softening of hard skin. After just five minutes, the softened, hard skin can be easily removed, which means the treatment takes considerably less time. The foam that is produced remains stable on the skin and does not swell up. This means that there is no unintended softening of neighboring skin areas. Non-fragranced. Antimicrobial. Made in Germany. To soften the skin so that calluses can be removed easily. - Precisely and rapidly softens the skin so calluses can be removed easily.