Description Jack Black Industrial strength hand healer is designed for dry, chapped and cracked hands. The rich, non-greasy PureScience formula helps diminish hard, calloused skin and heal unsightly cuticles, providing long-lasting relief. Benefits The ingredients packed in our hand healer include macadamia nut oil that softens and hydrates the skin. Suggested Use Apply a small amount to the palms and back of your hands anytime they feel dry. It is also very effective on rough feet.