Is There UV Radiation in Cars?
2 Answers
There is UV radiation in cars, which includes UVA, UVB, and UVC. Car windows can only block a small portion of UVA rays, while the rest can penetrate the glass. Below is a detailed introduction to UV radiation: 1. UVA: The longest wavelength among UV rays, not absorbed by the ozone layer at the top of the atmosphere, can penetrate the dermis. UVA not only stimulates melanin synthesis, darkening the skin, but is also the main cause of skin aging and fine wrinkles. 2. UVB: Medium-wave UV radiation that can reach the dermis, causing sunburn, erythema, tanning, etc. However, most UVB is absorbed by the ozone layer and can also be blocked by glass, sun umbrellas, and clothing. 3. UVC: UVC is almost entirely absorbed by the atmosphere and is rarely encountered.
I've been driving and noticed that there is indeed UV radiation inside the car. When sunlight comes through the windows, UVA and a small amount of UVB rays can penetrate the glass, especially the side windows, as the windshield has a laminated design that blocks more. Long-term exposure may damage the skin, accelerate aging, and even increase the risk of skin diseases. The leather or plastic inside the car is also prone to fading. I feel that the heat on my arms while driving in summer is due to UV exposure. It's recommended to use sunscreen, window films, or wear sunglasses for protection. Many new cars now come with built-in UV-blocking coatings, which work well; upgrading protection for older cars is simple, practical, and safe. Extra caution is needed on long drives to reduce direct exposure time and protect health. These small measures help avoid health risks.
