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Sunski’s Dipsea sunglasses are polarized, with 100% UVA, UVB and UV400 protection. While UVA and UVB rays both come from the sun, UVA rays have the longest wavelengths — meaning they’re most ...
Medical experts advise the public on the importance of wearing sunglasses to protect the eyes from UV; [26] for adequate protection, experts recommend sunglasses that reflect or filter out 99% or more of UVA and UVB light, with wavelengths up to 400 nm. Sunglasses that meet this requirement are often labeled as "UV400".
Even some products labeled "broad-spectrum UVA/UVB protection" have not always provided good protection against UVA rays. [71] Titanium dioxide probably gives good protection but does not completely cover the UVA spectrum, with early 2000s research suggesting that zinc oxide is superior to titanium dioxide at wavelengths 340–380 nm. [72]
A UV index reading of 3 to 5 means moderate risk of harm from unprotected sun exposure. Stay in shade near midday when the sun is strongest. If outdoors, wear sun-protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 50+ sunscreen every 1.5 hours, even on cloudy days, and after swimming or ...
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The AAD recommends using a broad-spectrum sunscreen — meaning it protects against both UVA rays (which prematurely age skin) and UVB rays (which cause sunburn) — with SPF 30 or higher.
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