NONYX Nail Gel cleans out discolored keratin debris where nail fungus grows taking the fungus with it. Use on discolored, brittle, or thickened toenails and fingernails. Can be applied under traditional nail polish. Keeps nails clear and healthy-looking with regular use. Effective for toenails and fingernails. Safe for diabetics with healthy feet. Free of preservatives and parabens. Dermatologist and podiatrist tested. NOT TESTED ON ANIMALS. Recyclable packaging.