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2. Retinol - Wikipedia

   en.wikipedia.org/wiki/Retinol

   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]

3. Vitamin A - Wikipedia

   en.wikipedia.org/wiki/Vitamin_A

   Before the era of synthetic retinol, cod liver oil, high in vitamins A and D, was a commonly consumed dietary supplement. [ 77 ] [ 78 ] Invertebrates cannot synthesize carotenoids or retinol, and thus must accrue these essential nutrients from consumption of algae, plants or animals.

4. These Derm-Approved Retinol Alternatives Target Fine Lines ...

   www.aol.com/derm-approved-retinol-alternatives...

   Retinol alternatives can be used on various parts of the body to improve skin texture, tone, and firmness. “Consider areas like the neck, chest and hands, which are prone to sun damage and show ...

5. Hypervitaminosis A - Wikipedia

   en.wikipedia.org/wiki/Hypervitaminosis_A

   Toxicity results from ingesting too much preformed vitamin A from foods (such as liver), supplements, or prescription medications and can be prevented by ingesting no more than the recommended daily amount. Diagnosis can be difficult, as serum retinol is not sensitive to toxic levels of vitamin A, but there are effective tests available.

6. Dermatologists Say These Are the Best Gentle Retinol Serums ...

   www.aol.com/dermatologists-editors-best-retinol...

   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 ...

7. 10 retinol products to get rid of those pesky fine lines and ...

   www.aol.com/lifestyle/10-retinol-products-rid...

   This is where retinol comes into play -- it attaches itself to these damaged cells to help them act like healthy cells again. While most products only work on the surface level -- say to exfoliate ...