Judging by the countless TikTok videos, beauty enthusiasts are using glycolic acid as a deodorant because they’re looking for natural alternatives and love the idea of a multipurpose product. Glycolic acid is said to “lower the pH of the underarms, which creates an environment inhospitable to odor-causing bacteria,” explains Dr. Priya Verma, medical director at Nova Aesthetic Clinic, which explains why so many TikTokers endorse reducing body odor. . However, Dr. Al-Mansoori says this is just a theory, and it has not actually been shown to reduce odor. Furthermore, Dr. Verma says there is little evidence that glycolic acid reduces sweating. “In fact, the water from sweat will neutralize the glycolic acid, reducing any benefits of applying the acid,” she says.