SpaGuard’s Soft Soak Shock – Oxidizer enables hot tub owners to shock treat their spa water to effectively eliminate body oils, shampoos, soaps, sweat, and any other unwanted organic compounds. Soft Soak Shock-Oxidizer’s patented formula combines small particles together, so they become big enough to be trapped by filter elements, which vastly improving water quality and clarity. Soft Soak Shock-Oxidizer should not be used with chlorine or bromine-based systems and is not a substitute for spa sanitizers. This product comprises part of the SpaGuard’s Soft Soak System.