Lotions, oils, fats and dirt are released from your pores into the water. These products can cling to the side of the hot tub, often forming scum line or clogging the filter. The result is cloudy water, poor filtration and odor. Formulated with a natural source of enzymes, 100% biodegradable, Purezyme breaks down these organic contaminants improving your hot tub water clarity and eliminating scum. It also acts as a strong deodorant, removing odor from your hot water. Purezyme keeps your hot tub water clear and sparkling with natural enzymatic action.