![]() What this means for you: In general, the fairer your skin, the stronger the UVB and the longer you’re in the sun, the higher you should go on SPF. And while broad spectrum sunscreen blocks some amount of UVA, there is no standard measure for UVA protection, which is why SPF indicates only UVB protection. Sunscreen lower than SPF 15 helps prevent only sunburn and no sunscreen can block 100 percent of UVB. Sun Protection Factor (SPF) is a number from 2 to 50+ that tells you the percentage of UVB a sunscreen can block and how long your sunscreen will protect you from the sun: One exception: don’t put sunscreen on children under six months of age shield them from the sun by keeping them in the shade and covered with protective clothing, including a hat. When going outdoors, wear sunscreen even during winter and on cloudy days. What this means for you: Choose sunscreen labeled “broad spectrum,” which offers protection from both UVB and UVA. to 4 p.m., and can partially penetrate clouds but not glass. UVB. Rays of UVB affect the outer layer of skin and are primarily what cause sunburns they can also contribute to premature aging and the development of a common type of skin cancer, called melanoma.UVA rays can penetrate both clouds and glass. UVA. Even though you won’t see immediate signs of it, UVA penetrates into deeper levels of the skin and can contribute over time to premature skin aging and wrinkles as well as melanoma. ![]() ![]() There are two main types of UV you need to know about: Despite that, UV is incredibly powerful and can be harmful to humans. UV is emitted by the sun but, unlike visible light, it cannot be seen by the human eye. Ultraviolet radiation (UV) is the reason we need to wear sunscreen. We’ll explain the most common sunscreen terms and what they mean for you-so you can spend more time enjoying the sun and less time researching how to protect yourself from it. Don’t worry: you don’t need to get an advanced degree in sunscreen terminology. If you’re like most of us, you sometimes struggle with translating sunscreen labels. And there’s no one right answer: the best sunscreen for you will depend on a number of factors, including formulation, skin type and level of sun exposure. But beyond that, we have to start making decisions about what type of sunscreen to wear and when. The fact that we all have to wear sunscreen is a no-brainer.
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