Your car windows are a whole different story. Most windshields are laminated and block a huge chunk of UVA rays. The side and rear windows? Not so much.
Can You Tan Through a Window? | UV Rays & Glass Explained
That’s why truck drivers sometimes have a darker left arm after years on the road. It’s a real phenomenon called "driver’s tan," and it’s the UVA doing its quiet work.
So if you’re on a long road trip, don’t assume you’re totally protected. Sunscreen is still your friend, even when you’re behind glass.
The Great Window Debate
Does this mean you should park yourself by a window all day for a tan? Probably not. The color you get will be weak and uneven compared to the real deal.
It’s like comparing a gentle breeze to a strong wind. Both move the leaves, but only one actually rustles your hair.
And let’s be honest: sitting by a window for hours sounds cozy, but it’s a major time investment for a tiny payoff. You’d be better off taking a quick 15-minute walk outside.
