Just spray it on and wipe it off—that's all there is to it!Instantly removes black streaks caused by water runoff. Safe for use on fiberglass, metal and painted surfaces. Spray-on/wipe-off application requires no scrubbing. No harsh chemicals.Key featuresQuickly removes black streaks caused by water run offSafe for use on fiberglass, metal and painted surfacesWill not remove wax or polishNo hard scrubbing needed will instantly remove stains