Defrosts icy windscreens in a flash the de icer also ensures that the windows wont ice up again and give you clear vision this de icer makes ice scrapers superluous and prevents the scratches they cause the glycerine contained in the de icer keeps the rubbers supple contents 500 ml pump bottle use spray onto iced up windows thickly and evenly and wait for the de icer to work if it is a thick ice sheet spray again use the windscreen wipers to remove any further defrosted ice