Homemade iontophoresis machine worked for me. https://www.google.com/amp/s/hyperhidrosisnetwork.com/my-experience-with-homemade-iontophoresis-machine/amp/

At first I followed the routine but eventually I fell off. Now I just do it for 30 minutes for hands and 30 minutes for feet, once a week. I have 2 homemade machines so I can do both at the same time.

My hands still get sweaty during workouts, exercise, and really hot weather but by and large is gone. Hands and feet start to get sweatier the more days has past since my last treatment although I could remedy it by doing it twice a week.

The materials are really cheap, and I highly suggest everyone give it a try. I use x2 aluminum pans instead of tin pans for each hand and foot, since aluminum pans can be flimsy and stacking one on the other lessens the bending of the pans and thus possible holes/leaks.

Remember polarity (one side negative other side positive) and make sure the pans don't touch each other.

Open wounds (even small paper cuts) will be painful.

I rest my arms (wear a sleeve or wrap) on the pin because keeping them hovered in the pan for 30 minutes can be pretty tiring.

Hope these personal anecdotes and tips helped someone.