I just wanted to say how much my husband and I have loved using Silk Balance in our spa. I have used many products over the years and nothing compares to Silk Balance. I have really sensitive skin, and have always had problems in the past using other products in my spa. Not with Silk Balance. It’s WONDERFUL!!! No dry skin, no icky residue. Just sparkly clean and clear water. It’s also so easy to use. I highly recommend the Silk Balance to anyone who has a spa. Sue Spencer Boise, Idaho