Nonyx® Nail gel restores clear, healthy look to dark or yellowing nails. All-natural, patented formula rids toenails and fingernails of unsightly thickening, roughness, and discoloration caused by the build-up of keratin debris under the nail. Youíll see results in as little as 3-4 weeksóthen use periodically to keep nails looking clear and at their best. Recommended by podiatrists. 4 oz. bottle lasts for months!