Minerals found naturally in sweat may be able to act as an antiperspirant by clogging your sweat ducts
Source:
https://www.newscientist.com/article/2259920-your-own-sweat-could-be-used-to-produce-a-natural-antiperspirant/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home