I just wanted to say thanks for such a great product. My wife has very sensitive skin. We had a hot tub at our previous house and she had to stop using it. We recently moved and tried your Silk Balance in our hot tub. We have been using it for the last 8 months and not once has my wife had any problems with her skin. Even when friends come over they mention how soft their skin feels after using it. It also takes a lot of the work out of trying to balance chemicals. Thank you, Dave