Use: Clean and decontaminate, reduce the friction between the wiper and the glass, and protect it. This product is suitable for above zero degrees Celsius. Open the hood of the car, find the wiper, add a piece of wiper (if the glass is too dirty, it is recommended to add 2 pieces), wait for 5 minutes and then use it normally. A piece of conventional water can be exchanged with 4L of water. According to the normal volume of the liquid storage tanks, it is a piece of water, which can replace and be superior to traditional glass water. This product should be stored in a cool dry place to avoid contact with children. Do not swallow! This product can not be used for antifreeze glass water! Only the cleaning function does not have antifreeze function.