Many women believe that they don’t need to wear sunscreen if they’re not planning to spend the day outside. When it’s still dark out on your morning commute, you’re sitting in an office all day and you leave when night has fallen, it might seem like the sun’s not an enemy. However, Allure Magazine points out that UVA rays are more prominent than you think.

The sun has two types of radiation: UVB and UVA. Unlike UVB rays, UVA rays can travel right through windows, whether in your car, office or house. So, even if you think you’re protected by that pane of glass, you could be soaking up these cancer-causing rays that also promote premature aging.

It’s important to wear a broad-spectrum sunscreen on a daily basis – even if it’s raining outside. Slather on a product like Colorescience – Sunforgettable SPF 30 Mini Orb on areas of your body that aren’t covered by clothing, like your forearms and décolletage. Then, use a facial sunblock underneath your makeup. You’ll be protected from those pesky UVA rays.