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Exposure of skin to ultraviolet radiation from sunlight presents both positive and negative health effects. On the positive side, UV exposure enables the synthesis of vitamin D3, which is essential for bone health [1] and potentially plays a role in inhibiting certain cancers. [2][3] While vitamin D can also be obtained through dietary ...
Aging is a complex, progressive process that leads to functional and aesthetic changes in the skin. This process can result from both intrinsic (i.e., genetically determined) as well as extrinsic processes (i.e., environmental factors). Photoaging is attributed to continuous, long-term exposure to ultraviolet (UV) radiation of approximately 300 ...
Indoor tanning is a source of UV radiation, which is known to cause skin cancer, including melanoma [11] [12] [13] and skin aging, [14] and is associated with sunburn, photodrug reactions, infections, weakening of the immune system, and damage to the eyes, including cataracts, photokeratitis (snow blindness) and eye cancer.
Mineral sunscreens form a barrier between the skin and the sun's rays, while chemical sunscreens bind to the top layer of skin and transform UV rays into heat that disperses, said researcher Dr ...
Ingredients: Hyaluronic acid, retinoids, niacinamide and other B vitamins, vitamin C, and peptides are hydrating, plumping and skin-rejuvenating ingredients to look for as you rethink your ...
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 [68] (mg/cm 2). It is ...