New. Since 1970. Natural Prebiotic. Helps support good bacteria to keep skin in healthy balance (Tom's of Maine Prebiotic Deodorant keeps skin in healthy balance by helping to promote the growth of good bacteria to help reduce odor). 48h odor protection. No aluminum. Not all bacteria are bad for you. In fact, killing all bacteria may do more harm than good. www.tomsofmaine.com. Certified B Corporation. Learn more about our Stewardship Model and what we mean by natural at: www.tomsofmaine.com. Cruelty-free. Terracycle.