Can you explain Retinol and Retinyl Acetate as an ingredient in comparison to Renova, Retin-A or Vitamin A?

Vitamin A is the generic term for a variety of fat-soluble substances including retinol, retinyl palmitate, retinyl acetate, retinaldehyde and the provitamin A carotenoids such as beta-carotene. Vitamin A or retinol is found in foods and biological tissues as retinyl esters such as retinyl acetate and retinyl palmitate. Retinyl palmitate is the major storage form of Vitamin A in the body, primarily in the liver.

The best known function of vitamin A is in vision where it participates as the metabolite retinal (retinyl aldehyde) in the visual cycle. Topical retinoids have many effects on skin that are similar to alpha-hydroxy acids (AHAs). However, they act by different mechanisms on skin -- the retinoids interact with a specific receptor in skin; no specific receptor has been identified for AHAs.

Cosmeceutical retinoids are sold over the counter in skincare formulations. Cosmeceutical retinoids include: retinol (vitamin A) and retinal (vitamin A aldhehyde). Esters of retinol are also ... more.

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