16 Ounces. Dr. Organics Pure Castille Soap has been valued for generations for its purity, natural cleansing, and a variety of uses. Dr. Organics soaps are made exclusively from real organic essential oils and do not contain any harsh detergents that strip away skin's natural moisture. Dr. Organics soaps do not contain any animal fats. HOW IT WORKS: Dr. Organics Pure Tea Tree Soap incorporates the natural properties of organic essential oils with a refreshing tea tree scent. The organic oils in our soap attracts moisture and holds that moisture close to the skin. The result is a refreshing, naturally clean soft skin.