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The ultraviolet index, or UV index, is an international standard measurement of the strength of the sunburn -producing ultraviolet (UV) radiation at a particular place and time. It is primarily used in daily and hourly forecasts aimed at the general public. The UV index is designed as an open-ended linear scale, directly proportional to the ...
Sunscreen, also known as sunblock[ a ] , sun lotion or sun cream, is a photoprotective topical product for the skin that helps protect against sunburn and prevent skin cancer. Sunscreens come as lotions, sprays, gels, foams (such as an expanded foam lotion or whipped lotion [ 4 ]), sticks, powders and other topical products.
️ FYI: We updated this article in June 2023 to add a few internet-famous drugstore sunscreens, delete outdated oldies, and give you the most up-to-date info on drugstore sunscreens, with more ...
Other dermatologist-recommended sunscreen we’ve covered: CeraVe Sunscreen Stick SPF 50. $9 at Walmart. Derma-E Sun Defense Mineral Oil-Free Sunscreen SPF 30 Face. $17 at Amazon.
UPF (ultraviolet protection factor) represents the ratio of sunburn-causing UV without and with the protection of the fabric, similar to SPF (sun protection factor) ratings for sunscreen. While standard summer fabrics have UPF ~6, sun protective clothing typically has UPF ~30, which means that only 1 out of ~30 units of UV will pass through (~3%).
Derma-E’s Sun Defense sunscreen is 100% unscented, which Bailey likes. It’s also fortified with vitamin C and green tea to help skin recover after sun exposure and fight the signs of aging ...