tretinoin
noun
tre·tin·o·in
tre-ˈti-nə-win 
: 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
Examples of tretinoin in a Sentence
Recent Examples on the Web
This means that, for example, the prescription retinoid tretinoin could lead to more intense side effects than an over-the-counter retinol product.
—
Jamie Friedlander Serrano, TIME, 17 Oct. 2024
Geraghty recommends using retinol for acne, such as prescription tretinoin cream or over-the-counter Differin Adapalene Gel 0.1% Acne Treatment.
—Deanna Pai, Glamour, 2 Oct. 2024
Doctors say to avoid are retinol (including tretinoin), salicylic acid, benzoyl peroxide, hydrocortisone (in the first trimester), chemical sunscreens, hydroquinone, and tetracycline during pregnancy.
—Katie Becker, Vogue, 1 Oct. 2024
One study compared the three concentrations of tretinoin that are typically prescribed with retinol products that have a corresponding strength.
—Lori Youmshajekian, Scientific American, 11 Sep. 2024
See all Example Sentences for tretinoin 
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Jamie Friedlander Serrano, TIME, 17 Oct. 2024
Geraghty recommends using retinol for acne, such as prescription tretinoin cream or over-the-counter Differin Adapalene Gel 0.1% Acne Treatment.
—Deanna Pai, Glamour, 2 Oct. 2024
Doctors say to avoid are retinol (including tretinoin), salicylic acid, benzoyl peroxide, hydrocortisone (in the first trimester), chemical sunscreens, hydroquinone, and tetracycline during pregnancy.
—Katie Becker, Vogue, 1 Oct. 2024
One study compared the three concentrations of tretinoin that are typically prescribed with retinol products that have a corresponding strength.
—Lori Youmshajekian, Scientific American, 11 Sep. 2024
See all Example Sentences for tretinoin
Dictionary Entries Near tretinoin
Cite this Entry
“Tretinoin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tretinoin. Accessed 3 Dec. 2024.
Copy CitationMedical Definition
tretinoin
noun
tre·tin·o·in
tre-ˈtin-ə-wən
: the all-trans isomer of retinoic acid that is applied topically to the skin to treat acne vulgaris and to reduce facial wrinkles, roughness, and pigmented spots and that is administered orally to induce remission of acute myelogenous leukemia in which more than half the cells are malignant promyelocytes
called also all-trans-retinoic acid, retinoic acid, vitamin A acid
see isotretinoin, retin-aLove words? Need even more definitions?
Merriam-Webster unabridged
Share