Columbia Medicated Skincare Antiseptic Powder First Aid For Sensitive Skin, Fragrance Free. It is effective in reducing pain and itch and has been used by doctors, health care professionals, and moms and dads for over a century to treat conditions including diaper rash and heat rash, insect bites, athletes foot, poison ivy, perspiration odor, bed sores, sensitive rash, chafing, minor cuts, razor burn, itchy skin, and skin irritation.