We used this on our 13 year old son’s palms for excessive sweating. He has had trouble writing for years because he can’t hold a pencil due to sweat. This has left his palms dry and he is now able to hold a pencil. We bought it without any recommendation, but took the risk and love it. He used it for one week, and has not used it for 4 or 5 weeks now and is still dry. Thanks!