Himecoto White Armpit Princess (白ワキ姫) is a Japanese exfoliating cream designed to instantly brighten and smooth underarms. Using clay and fruit acids, it gently removes dark spots, blackheads, and dead skin caused by shaving or friction, leaving a temporary white coating for a visibly lighter look in just 30 seconds. Best for those concerned about underarm darkness or roughness, especially before wearing sleeveless outfits. Not recommended for sensitive skin due to potential irritation.