Makes windscreen wipers redundant. Rain X does just what it states, leaving the exterior of your windshield clear of rainwater without affecting your wipers. Make sure windscreen is clean and dry, apply the Rain-X to a soft clean cloth and simply apply to the glass in circular movements, make sure the whole of the glass is treated and then watch the rain bead right off the glass. Rain-X Water Repellent is easy to apply and forms a second line of defense against wet weather driving conditions. A positive aid to road safety. If you ride a motorbike, why not try it on your visor?