No preservatives, no aluminum salts, and no propellants. Our alternative? Sodium bicarbonate to absorb odors, and antibacterial essential oils to keep you smelling fresh. John Dwight and his brother-in-law, Dr. Austin Church, invented Bicarbonate of Soda in 1846. It was made from carbon dioxide and treated soda ash. We use it in a wide array of our products from Bath Bombs and Bubble Bar Slices to our deodorants. We blend sodium bicarbonate with soft, absorbent powders, and antibacterial essential oils and herbal infusions so our deodorants keep body odor under control and leave your skin feeling and smelling fresh.