Yes, daily use of facial sunscreen should be an important part of your beauty routine all year long. While we’re most familiar with the effects of the sun’s short-wave UVB rays that cause red, stinging sunburn in the superficial layers of the skin, 95% of the light that reaches our skin is made up of UVA rays that have a long wavelength, which means they can penetrate deeper into the skin.
These rays are present even when there isn’t any sunshine. So UVA has an effect on our skin all year round, even when it’s cloudy or snowing. UVA rays can also penetrate window glass, which means you are exposed to harmful rays even during your drive to work!
When you use a sunblock — along with other measures like wearing protective clothing and staying in the shade where possible — you can decrease your risk of visible signs of early skin aging.