Spa Platinum Pro Spa monthly: It is a proprietary blended formula of natural ingredients that naturally solves spa water treatment problems while dramatically reducing spa maintenance and sanitizer demand. Spa Monthly contains all pure organic compounds. That is naturally attracted to contaminants and mineral in the water. The Natural flocking agents attract dirt . body oils . lotion . etc? taking it to the filter. This natural flocking action keeps your spa water crystal clear for a full month.BiodegradableNon toxic No phosphateNo chlorine Fragrance and dye freeNo VOCs or petrochemicalsMade from all natural raw ingredients Eliminates chemical smells in pool water Silky soft water and skin . no irritation. Keep water crystal clear and skin silky softMade in the USAFragrance FreeSize: 8 FL Oz/235 ml X 6