retinoicacid

ret·i·no·ic acid (rĕt'n-ōʹĭk) n. In both senses also called tretinoin, vitamin A acid.

1. A vitamin A derivative, C₂₀H₂₈O₂, that is a regulator substance in morphogenesis and functions in the growth and development of bone and the maintenance of epithelium.

2. A preparation of this, used topically to treat acne and to modify the appearance of fine wrinkles, hyperpigmentation, and roughness of facial skin.

  [retinol + -oic.]

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