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  2. How Often Should You Use Retinol? Here's What Dermatologists Say

    www.aol.com/lifestyle/often-retinol-heres...

    A quick rundown on ideal retinol application frequency. For premium support please call: 800-290-4726 more ways to reach us

  3. Just Started Using Retinol? Here's How To Tell If Your Skin ...

    www.aol.com/just-started-using-retinol-heres...

    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.

  4. 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 ]

  5. Vitamin A - Wikipedia

    en.wikipedia.org/wiki/Vitamin_A

    Vitamin A is a fat-soluble vitamin that is an essential nutrient.The term "vitamin A" encompasses a group of chemically related organic compounds that includes retinol, retinyl esters, and several provitamin (precursor) carotenoids, most notably β-carotene (beta-carotene).

  6. Retinoid - Wikipedia

    en.wikipedia.org/wiki/Retinoid

    First generation retinoids are produced naturally in the body and interact with their normal biological counterparts, such as retinol binding protein 4 for retinol, retinoid receptors for all-trans-retinoic acid or 9-cis-retinoic acid. [9] 13-cis retinoic acid has an unknown biological pathway but appears to act as a growth factor. [10]

  7. What's the Difference Between Retinol and Retinoids?

    www.aol.com/whats-difference-between-retinol...

    OK, So What About Retinal? To make matters more confusing, there is a difference between retinol—with an o—and retinal—with an a. “Retinal, a.k.a retinaldehyde, is often considered to be ...

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