So, can you tan through a window? Absolutely, but it’s a lazy, slow, sad tan. You’ll get a little color, but nothing worth bragging about.
If you want that golden glow, your best bet is still the great outdoors—with SPF, of course. Or, you know, just embrace being a vampire and enjoy the shade.
Either way, now you know the science. Next time you’re chilling by a window, you can impress your friends with this weird little fact. You’re welcome.
