polyhydroxy
adjective
poly·hy·droxy
ˌpä-lē-hī-ˈdräk-sē 
: containing more than one hydroxyl group in the molecule
Examples of polyhydroxy in a Sentence
Recent Examples on the Web
The beta hydroxy and polyhydroxy acids work together to help clear pores while gently exfoliating, while the watermelon enzymes exfoliate while brightening the skin.
—
Erika Reals, Peoplemag, 30 Mar. 2023
Tuesday, January 10: Treat your skin with the Exuviance Age Reverse Rebuild-5 Cream, which is chock-full of firming peptides, gently exfoliating polyhydroxy acids, free-radical-fighting vitamin E, and moisturizing peony extract.
—Jennifer Hussein, Allure, 6 Jan. 2023
For sensitive skin types, gentle chemical exfoliants that include PHAs (polyhydroxy acids) are ideal.
—Sarah Madaus, SELF, 9 Nov. 2021
Chlöe opts for the normal-and-combination skin formula, a 9 percent blend of AHAs and polyhydroxy acids (PHAs).
—Lindy Segal, Harper's BAZAAR, 29 Sep. 2021
Look for polyhydroxy acids (PHAs) instead.
—Audrey Noble, Seventeen, 26 Oct. 2020
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Erika Reals, Peoplemag, 30 Mar. 2023
Tuesday, January 10: Treat your skin with the Exuviance Age Reverse Rebuild-5 Cream, which is chock-full of firming peptides, gently exfoliating polyhydroxy acids, free-radical-fighting vitamin E, and moisturizing peony extract.
—Jennifer Hussein, Allure, 6 Jan. 2023
For sensitive skin types, gentle chemical exfoliants that include PHAs (polyhydroxy acids) are ideal.
—Sarah Madaus, SELF, 9 Nov. 2021
Chlöe opts for the normal-and-combination skin formula, a 9 percent blend of AHAs and polyhydroxy acids (PHAs).
—Lindy Segal, Harper's BAZAAR, 29 Sep. 2021
Look for polyhydroxy acids (PHAs) instead.
—Audrey Noble, Seventeen, 26 Oct. 2020
Cite this Entry
“Polyhydroxy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/polyhydroxy. Accessed 9 Sep. 2025.
Copy CitationMedical Definition
polyhydroxy
adjective
poly·hy·droxy
-hī-ˈdräk-sē
: containing more than one hydroxyl group in the molecule
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