So far so good.
Product is working, only bad part is the skin irritation. Hydrocortisone seems to help if applied to surrounding areas before application. I do have very sensitive skin. Sweating causes the same reaction, so not just a side effect of Zero Sweat. I have noticed a significant reduction in sweating, which is awesome, even if I miss a day. But temperatures have cooled down, so will have to see what it does in the summer. I'm a happy customer so far, well done!!!