hy·​dro·​qui·​none ˌhī-drō-kwi-ˈnōn How to pronounce hydroquinone (audio)
: a white crystalline strongly reducing phenol C6H6O2 used especially as a photographic developer, as an antioxidant and stabilizer, and in medicine to remove pigmentation from hyperpigmented areas of skin

Examples of hydroquinone in a Sentence

Recent Examples on the Web Essentially, hydroquinone decreases the production of melanin by inhibiting a pigment-producing enzyme called tyrosinase. Taryn Brooke, Allure, 13 Nov. 2023 Thanks to its stabilized vitamin C and prescription strength hydroquinone, this brightening serum takes dark spots to task. Anneke Knot, wsj.com, 3 Nov. 2023 Melasma treatments include over-the-counter skincare products that brighten or exfoliate and prescription medications such as topical hydroquinone. Angela Palmer Updated, Verywell Health, 23 Aug. 2023 The ingredient is a gentler answer to the lightening agent hydroquinone. Calin Van Paris, Vogue, 2 Aug. 2023 Other studies have found no link between hydroquinone and cancer in human beings. Angela Palmer Updated, Verywell Health, 23 Aug. 2023 Made with potent 2% spot-fading hydroquinone, retinol and vitamin C, this cream from the trusted GH Seal star brand Palmer's is the best-selling dark spot corrector at Walmart. Nicole Saporita, Good Housekeeping, 10 May 2022 In some cases, the effects of hydroquinone can be seen in as little as two weeks. Janell M. Hickman, SELF, 27 July 2022 For clients looking to avoid products with hydroquinone, Stevens also recommends this serum, which combines tranexamic acid and niacinamide to brighten skin. Harper's Bazaar Staff, Harper's BAZAAR, 30 Nov. 2022 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'hydroquinone.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


International Scientific Vocabulary

First Known Use

circa 1872, in the meaning defined above

Time Traveler
The first known use of hydroquinone was circa 1872

Dictionary Entries Near hydroquinone

Cite this Entry

“Hydroquinone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydroquinone. Accessed 2 Mar. 2024.

Medical Definition


hy·​dro·​qui·​none -kwin-ˈōn How to pronounce hydroquinone (audio) -ˈkwin-ˌōn How to pronounce hydroquinone (audio)
: a bleaching agent C6H6O2 used topically to remove pigmentation from hyperpigmented areas of skin (as a lentigo or freckle)
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