Dear SilkBalance, We purchased our first spa in 1991 and have been on the search for “good water” since. As we’ve gotten older our skin keeps getting more dry each year. So, when I read your brochure for SilkBalance at Prescott Spas I thought “We’ve got to give this a try! If it really does what it says it does, it will be a miracle!” That was one bottle of SilkBalance ago and it is a miracle! It really does change the “feel” of the water and our skin is not longer lizard skin after sitting in the spa and the water smells fresh!! All we have to do is follow the directions and it is a miracle. This is the best product, worth every penny! Thanks so much! Sincerely, Jan Hagel, Prescott Valley, AZ