Emulsify buffing compound and the everyday buildup of oils, dirt and cosmetics—even help eliminate re-deposit—with this all-natural colloidal solution. Rio Rapid cleaner is long-lasting and can also be used as a soak to clean and condition opals. Non-toxic and biodegradable (not a soap or detergent), Rio Rapid cleaner is safe for plastics, fabrics and all metals, and can be used in an ultrasonic cleaner. Mix at a 16:1 ratio for optimal results. One quart (yields four gallons). Environmentally friendly.