Commercial production of retinol typically requires retinal synthesis through reduction of a pentadiene derivative and subsequent acidification/hydrolysis of the resulting isomer to produce retinol.
https://en.wikipedia.org/wiki/Retinol
Retinol and retinoic acid—forms of vitamin A—do make skin look younger. By Alison Garwood-Jones. Prescription creams containing retinoic acid, a potent derivative of vitamin A, began life about 40 years ago as a topical treatment for patients with severe acne.
http://www.besthealthmag.ca/best-looks/skin/the-secret-to-fighting-wrinkles/
Pure retinol is extremely sensitive to oxidization and is prepared and transported at low temperatures and oxygen free atmospheres. When prepared as a dietary supplement, retinol is stabilized as the ester derivatives retinyl acetate or retinyl palmitate.
https://en.wikipedia.org/wiki/Retinol
How retinol works. In a few months of daily use of prescription cream (preferably at night, as vitamin A degrades in the light), skin starts looking less lined and more even-toned. All ages and skin types can benefit, although most women in Canada who do use it are in their 40s and 50s.
http://www.besthealthmag.ca/best-looks/skin/the-secret-to-fighting-wrinkles/
So far, the only other companies we found that disclose retinol percentages—on press material or when queried—are Canadian brands Alyria (sold at physicians’ offices) and drugstore brand Dermaglow. Dermaglow Nuvectin Retinol-Px face cream ($75, 45 mL) contains 0.15% retinol.
http://www.besthealthmag.ca/best-looks/skin/the-secret-to-fighting-wrinkles/
Over-the-counter retinol. Many cosmetic skincare lines offer anti-aging creams containing retinol, part of the vitamin A group of molecules. Retinol’s role in anti-aging creams is to soften skin and reduce the look of wrinkles.
http://www.besthealthmag.ca/best-looks/skin/the-secret-to-fighting-wrinkles/
Retinol is milder; while the results may not be as dramatic, more people tolerate it well. Like tretinoin, retinol encourages skin cell turnover; this new skin is delicate and should not be exposed to the sun. That is why these ingredients should only be found in products intended for night use. Vitamin A derivatives, including retinol, rapidly break down when exposed to the sun and air. That’s why retinol-containing products should always come in pumps or tubes with tight-fitting caps.
http://blogs.webmd.com/healthy-skin/2011/08/retinol-when-to-use-it-and-when-to-avoid-it.html
By Debra Jaliman, MD. You may have noticed that retinol has made its way into an increasing number of skin care products. At first it was just in night creams and serums, but lately it has been turning up in just about everything, from cleansers to sunscreens.
http://blogs.webmd.com/healthy-skin/2011/08/retinol-when-to-use-it-and-when-to-avoid-it.html
Retinol is one of the animal forms of vitamin A. It is a diterpenoid and an alcohol.
https://en.wikipedia.org/wiki/Retinol
Retinol is produced in the body from the hydrolysis of retinyl esters, and from the reduction of retinal.
https://en.wikipedia.org/wiki/Retinol
where is retinol found
The retinol is found in the retinyl esters. The Retinol found is in Retinyl esters, and from the reduction of retinal.