Dr. Bronner's Rose Castile Bar Soap, with its beautifully blended natural essential oils, has an elegant and romantic traditional feel. Completely biodegradable and vegetable based, Castile Bar Soaps are gentle and effective, perfect for washing body, face or hair. They are also very popular with DIY homemakers. For example, they can be grated to form part of a homemade powdered laundry detergent.