Dr. Shyamali Singhal, a surgical oncologist, said that painting the nails is a preferred self-care ritual for many people, and cancer patients are no exception to this. But what about the toxic ingredients used in nail polish? Many polishes are misleadingly marketed as safe, based on the fact that they are “free”, as they put it, of some of the chemicals that are known to be unsafe. So, is there even such a thing as non-toxic nail polish? The answer is yes.