Works completely, and no need for a purchase of medication. Simply take 1/3 cup laundry bleach, and
2/3 cups regular water, mix in a jar, and swab in on nail once a day in the morning for a couple of weeks. Press on the nail up and down a little as you swab so that it goes under as much as possible. Then follow up as the new nail grows in about once a week. Completely cures it. Simply, and easily. You don't need to buy products like those one TV.