Atarax Dusting Powder 100 gm is an antifungal medication used in the treatment of used to treat fungal skin infections such as athlete's foot, ringworm, fungal nappy rash, and fungal sweat rash. It works by inhibiting the fungal cell membrane, thereby killing the infection-causing fungus. Atarax Dusting Powder 100 gm may cause side effects like mild burning or pain, irritation, redness, or itching.