Lett’s Heel Useful for prophylaxis and as an adjunct to other podiatric anti-fungal treatments. The first foot care anti-fungal emollient cream combining 20% Urea and 30% Glycolic acid. Glycolic acid aids in exfoliating thickened, cracked skin which can harbor micro- organisms. Urea in a petrolatum-based vehicle helps soften dry, calloused skin for enhanced anti-fungal penetration.