Alpha-Hydroxy-Acid and Retinol

Alpha-Hydroxy-Acid

α-Hydroxy acids, or alpha hydroxy acids (AHAs), are a class of chemical compounds that consist of a carboxylic acid substituted with a hydroxyl group on the adjacent carbon.

They are often found in products claiming to reduce wrinkles or the signs of aging, and improve the overall look and feel of the skin. They are also used as chemical peels available in a dermatologist's office, beauty and health spas and home kits, which usually contain a lower concentration of around 4%. Although their effectiveness is documented numerous cosmetic products have appeared on the market with unfounded claims of performance. Many well-known α-hydroxy acids are useful building blocks in organic synthesis: the most common and simple are glycolic acid, lactic acid, citric acid, mandelic acid..

Retinol

Retinol is one of the animal forms of vitamin A. It is a diterpenoid and an alcohol. It is convertible to other forms of vitamin A, and the retinyl ester derivative of the alcohol serves as the storage form of the vitamin in animals.

retinol n : an unsaturated alcohol that occurs in marine fish-liver oils and is synthesized biologically from carotene [syn: {vitamin A1}]

Retinol \Ret"i*nol\, n. [Gr. ??? resin + L. oleum oil.] 1. (Chem.) A hydrocarbon oil {C32H16}, obtained by the distillation of resin, -- used as a solvent, as an antiseptic, and in printer's ink. [1913 Webster +PJC] 2. One of the compounds which function as vitamin A. Called also {vitamin A}, {vitamin A1} and {vitamin A alcohol}. See {vitamin A1}. [PJC]

Data Sources:

  • retinol: WordNet (r) 2.0
  • retinol: The Collaborative International Dictionary of English v.0.44

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