Safe for coated surfaces: It will not remove ceramic, wax, or polymer coatings. Highly Concentrated: This product is effective at dilution ratios as low as 1:128. Resists Water Spots: This formulation is specifically designed to reduce water spots after drying, even on glass and windows. Directions: Mix at least one ounce of soap for every one gallon of water. Higher concentrations can be used for excessively dirty vehicles. Clean surface using a wash mitt or sponge. Dry surface with a clean microfiber towel.