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Hypervitaminosis A refers to the toxic effects of ingesting too much preformed vitamin A (retinyl esters, retinol, and retinal). Symptoms arise as a result of altered bone metabolism and altered metabolism of other fat-soluble vitamins. Hypervitaminosis A is believed to have occurred in early humans, and the problem has persisted throughout ...
Retinol, also called vitamin A 1, is a fat-soluble vitamin in the vitamin A family that is found in food and used as a dietary supplement. [3] Retinol or other forms of vitamin A are needed for vision, cellular development, maintenance of skin and mucous membranes , immune function and reproductive development. [ 3 ]
Vitamin A in food exists either as preformed retinol – an active form of vitamin A – found in animal liver, dairy and egg products, and some fortified foods, or as provitamin A carotenoids, which are plant pigments digested into vitamin A after consuming carotenoid-rich plant foods, typically in red, orange, or yellow colors. [4]
Some may think it's a better idea to use retinol more often to speed up the purge, but it can possibly make the side effects worse. "Start using it two to three nights a week," says Dr. Penzi.
Retinol: The most common form of over-the-counter topical vitamin A products, retinol comes in varying percentages. Those with sensitive skin should opt for lower percentages before graduating to ...
Retinol is the holy grail ingredient of anti-aging, but side-effects can include dry, flaking skin. If you already have dry skin, retinol can be extra-irritating, but it doesn't have to be.
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