Does car glass protect against UV rays?
2 Answers
Automotive glass generally has UV protection functionality, which can reduce the harm caused by UV rays to the skin and has the ability to block UV transmission. Higher-end glass may also feature noise reduction, heat insulation, and thermal insulation properties. Modern car glass incorporates many advanced designs with multiple functions, demonstrating sophisticated and thoughtful engineering. Below is relevant information: UV rays: UV radiation is a dangerous sunlight hazard. With its relatively long wavelength and strong penetrating ability, it can pass through the skin's surface layer and reach subcutaneous tissues, damaging collagen, elastic fiber structures, and other fine skin tissues, leading to wrinkles and fine lines, causing skin laxity and aging. This is medically termed photoaging. UV protection glass functions: Filters sunlight, reduces UV damage to the skin, and has the ability to prevent (reflect or absorb) UV penetration. It provides thermal insulation inside the vehicle, ensures air conditioning efficiency, and minimizes the impact of external temperature or light on the interior climate. In fact, most ordinary glass has some degree of UV absorption capability.
When choosing a car, I paid special attention to the issue of UV protection for the glass because my child has sensitive skin. Nowadays, most new cars have laminated windshields, and the PVB film in the middle can block about 99% of UV rays, which is considered basic protection from manufacturers. However, the tempered glass used for side and rear windows is much less effective, typically blocking only 30-40%. Later, I added professional heat-insulating film myself, specifically choosing a product labeled UV400. Now, even after driving for three hours, my arms don’t turn red. For older cars without these features, I recommend wearing UV sleeves, as UV rays can accelerate interior aging, especially causing leather seats to crack easily.
