since purchasing a new tub to replace our old model we have used SilkBalance. We love that our skin no longer feels dried out like it did before. The chemicals in our tub last longer and are easier to keep balanced especially since we use our tub almost nightly during the winter and at least three to four nights a week during the summer. One of the best features is that there is no harsh chemical smell with the SilkBalance! Thank You for a great product! Melody Johns