Highly Effective - Urea 40 Nail Gel has a triple action formula which whitens, softens and conditions nails. - Urea is an effective ingredient to soften thickened nails and helps restore the healthy appearance of discolored or damaged nails. - UREA Nail Gel 40% is a keratolytic emollient, which is a gentle, yet potent, tissue softener for nails and..