I was having a reaction to the spa chemicals I was using, which was limiting my enjoyment of and (of course) my time in it. I began to think that I would never be able to be in it again. When I discovered SilkBalance at my dealer, I decided to give it a try. I am so pleased to say that I had NO reaction to SilkBalance, and will use no other product in my spa. Thank you SilkBalance!