Noun
tretinoin (usually uncountable, plural tretinoins)
(pharmacology) The all-trans isomer of retinoic acid that is applied to the skin to treat severe acne and reduce facial wrinkles, roughness, and pigmented spots.
For those who can't tolerate or obtain tretinoin, there is retinol. Source: Internet
In particular, over dryness (sometimes taking the form of dry, scaly patches), and hyperpigmentation, were tolerated much better by individuals who had previously used hydroquinone or tretinoin. Source: Internet
Treatment may require the application of a topical bleaching cream containing hydroquinone, tretinoin, or azelaic acid. Source: Internet
"Restoration of collagen formation in photodamaged human skin by tretinoin (retinoic acid)." Source: Internet
Typically, if you have pigmentation and you do laser for pigmentation, a doctor will give you a tretinoin, which is a retinol mix to keep your pigmentation under control. Source: Internet