Pre de Provence Shea butter enriched soap bars are known for their healing properties. Stemming from ancient African civilizations, the wonders of the healing properties of shea butter has been praised for years. The shea nut contains vitamin E, which is extremely important for healing, rejuvenating, and moisturizing skin. Pre de Provence shea butter bars are the perfect way to enhance and improve your skin by doing something as simple as bathing. The difference is one that can be recognized immediately. Quad milling is a special production process that refines the soap four times, creating a super luxurious feel on your skin.