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Retinoic acid is a biochemical compound derived from vitamin A. It exists as two isomers, tretinoin and isotretinoin, both of which are used in the treatment of acne.12

In the body, vitamin A, which is a fat-soluble alcohol, plays crucial roles in vision, embryonic development, growth, and the maintenance of epithelial tissues, sperm formation, and immune function. Retinoic acid is the form of vitamin A that regulates embryonic development and growth, and it is essential for healthy skin, mucous membranes, and the immune system.2

Retinoids are a broader category that includes naturally occurring and synthetic analogs of vitamin A.3

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3 Britannica Sources
  1. retinoic acid
  2. vitamin A
  3. retinoid

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