A wonderful product! I have grandchildren that use the tub and with sensitive skin issues, the use of SilkBalance has not caused any rashes or itchy skin for them. The same goes for my husband and myself. After using the tub, there is no “hot tub” heavy odor that adheres to the skin either that makes you want to have a shower. The ease of use of silk balance is a big seller as well! Wow! One bottle to use instead of 4 on a weekly basis. Perfect!