3-Month Supply. Exfoliant of keratin debris. For clear, healthy-looking nails. Clears out discoloring keratin debris under the nail. Apply to dark or yellowing nails. All natural. For clear, healthy-looking toenails and fingernails. Podiatrist recommended. NonyX Nail Gel breaks down and cleans out dark or yellowing keratin debris build-up under the nail. Once keratin debris is removed, nails look clear and attractive. Podiatrist-Recommended NonyX Nail Gel is: Topical; Safe; Effective; Easy to use; All natural. Apply directly to nails. NonyX Nail Gel - Millions of men and women face embarrassment from unsightly nails. Nail discoloration is actually keratin debris build-up under the nail. NonyX Nail Gel breaks down and removes this yellow or darkened build-up and keeps nails looking clear and attractive with regular use.