Our nail repair oil contains mineral oil and hydrogenated castor oil. It can effectively maintain the health of toenails, relieve pain, promote healthy nail regeneration, smooth nails, effectively alleviate inward growth of toenails, and is safe for people of all ages. Its usage is simple: simply brush nail drops twice a day with an applicator on the affected toes until the nails can be removed from the groove and easily trimmed. And it can also repair nails.