: containing more than one hydroxyl group in the molecule
Example Sentences
Recent Examples on the WebFor 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 Those with sensitive skin may want to look into the even gentler polyhydroxy acids (PHAs), Dr. Ngo says, and should avoid physical exfoliators like harsh scrubs containing pits or abrasive beads. Sarah Jacoby, SELF, 22 Aug. 2019 This cleanser is specially formulated with polyhydroxy acids (PHAs), a gentle acid suitable for sensitive skin types, to lightly exfoliate and help keep my blackheads and dead skin cells at bay. Kathleen Hou, The Cut, 9 Mar. 2018
Word History
First Known Use
1895, in the meaning defined above
Medical Definition
polyhydroxy
adjective
poly·hy·droxy -hī-ˈdräk-sē
: containing more than one hydroxyl group in the molecule