When the air temperature is lower than 15°C,it will very quickly form fog in the windshield of vehicle once the driver operates air conditioning.The fog will impact driver's sight,very problem! Once the driver has Auto Glass Antifog Towel,each time of cleansing can prevent fogging within 24 hours,that assures of safety of traffic.Very cool!Suitable for glass of vehicle,train,vessel, airplane and bathroom,etc. This product introduces advanced technology from Taiwan,applying to scientific technology to induct active ingredient.It is no toxic,no side effect,no harm to skin,no corruption to glass surface,safe and reliable.It can be used for a long time and recycled using. This product have significant performance against fogging caused by hot vapor or nature.Every glass surface cleansed by it can prevent fogging within 24 hours,also,have the ability of antifrost.