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The sun protection factor (SPF rating, introduced in 1974) is a measure of the fraction of sunburn-producing UV rays that reach the skin. For example, "SPF 15" means that 1 ⁄ 15 of the burning radiation will reach the skin, assuming sunscreen is applied evenly at a thick dosage of 2 milligrams per square centimeter [65] (mg/cm 2). It is ...
Whether you're looking for a sunscreen for that's kid and baby safe, or want something free of chemicals for your sensitive skin, mineral sunscreens are the way to go. Dr. Ashley Magovern of ...
Water loss through the skin is normally about 4–8 g/(m 2 ⋅h). A layer of petrolatum applied to normal skin can reduce that loss by 50–75% for several hours. [4] Oils naturally produced by the human body moisturize through this same mechanism. [2] Humectants are hydrophilic and absorb water. They absorb water from humid air (when >70% ...
Nivea (German pronunciation: ⓘ, [1] [2] stylized as NIVEA) is a German personal care brand that specializes in skin and body care. It is owned by the Hamburg-based company Beiersdorf Global AG. This was the origin of the Eucerin brand. Nivea comes from the Latin adjective niveus, nivea, niveum, meaning "snow-white". [3]
The recommended 'gold standard' of a sunscreen should be at least SPF 30 and at least 4 stars or plus symbols. [27] Daily sunscreen application is very important, but uses of shade, clothing, and hats are as important and more effective for sun protection. Serums are light, easily absorbed liquids that one spreads on their skin.
1960s advertisement for tanning lotion. Sunless tanning, also known as UV filled tanning, self tanning, spray tanning (when applied topically), or fake tanning, refers to the effect of a suntan without exposure to the Sun. Sunless tanning involves the use of oral agents (carotenids), or creams, lotions or sprays applied to the skin. [1]