Most people know to apply sunscreen on warm summer days when the sun is out in full force, or when they're spending the day outside. But should you wear it every day, even on cloudy days and in the winter months? Dermatologists and other experts say yes. According to the Skin Cancer Foundation, even when it's cloudy, up to 80 percent of the sun's UV radiation reaches the earth. Going unprotected on an overcast day can still lead to skin damage. Daily application of sunscreen is an important preventative health measure.
UVA vs. UVB: What's the Difference?
Ultraviolet (UV) rays are the rays in sunlight most damaging to skin. There are two basic types: UVA and UVB. UVB rays are associated with skin burning. UVA rays penetrate deeper into the skin and are associated with premature skin aging. Both UVA and UVB rays are associated with skin cancer formation.
Does Cloud Cover Block UV Rays?
During summer months, UVB rays are present at higher levels. UVA rays are strong year-round, and they can penetrate through clouds and even glass. This means that even on cloudy days, or days spent mostly indoors, skin can still be susceptible to damage. Sunscreen is an important step to add to a daily skin care routine to help decrease the risk of skin cancers and skin precancers, and to help prevent premature skin aging.
Choosing a Daily Sunscreen
When choosing a sunscreen to use daily, look for one that is broad spectrum, meaning it protects skin from both UVA and UVB rays, and is SPF 15 or higher. Vanicream™ Facial Moisturizer Broad Spectrum SPF 30 is a great daily option, especially for those with sensitive skin or those who want to avoid common irritants in their skin care products. It's a lightweight, mineral sunscreen face moisturizer formulated with ceramides and non-nano zinc oxide to provide broad spectrum SPF 30 protection from both UVA and UVB rays. This daily moisturizer is non-greasy and easy to apply, making it simple to protect skin all year long.