When it comes to underarms, it’s important to understand one essential distinction: Deodorants stop odor. Antiperspirants stop sweating. Some scientists have suggested that stopping that sweat with chemical compounds can affect the lymph system and compromise the immune system. The debate can get heated (pun intended), but even if conventional medicine says they’re safe, why apply chemicals in such a sensitive area when natural alternatives do the job as well—or better? Today’s natural deodorants call on mineral salts to balance pH and reduce bacterial growth and are infused with herbs like aloe, coriander and lichen, which have powerful, natural antiperspirant qualities. They work. Really.