hydroquinone

American  

[hahy-droh-kwi-nohn, -druh-kwin-ohn] / ˌhaɪ droʊ kwɪˈnoʊn, -drəˈkwɪn oʊn /

noun

Chemistry.

1. a white, crystalline compound, C 6 H 6 O 2 , formed by the reduction of quinone: used chiefly in photography and to inhibit autoxidation reactions.

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hydroquinone British  

/ ˌhaɪdrəʊˈkwɪnɒl, ˌhaɪdrəʊkwɪˈnəʊn /

noun

1. Also called: quinol.  a white crystalline soluble phenol used as a photographic developer; 1,4-dihydroxybenzene. Formula: C 6 H 4 (OH) 2

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Etymology

Origin of hydroquinone

First recorded in 1860–65; hydro- ¹ + quinone

Example Sentences

The creams may contain corticosteroids or hydroquinone, which can be harmful if used in high quantities, and in many countries are only obtainable with a doctor's prescription.

From BBC

Other sellers admitted using regulated ingredients such as kojic acid, hydroquinone and a powerful antioxidant, glutathione, which may cause rashes and other side-effects.

From BBC

All the products in question contain hydroquinone.

From Washington Post

The FDA says it has received reports of serious side effects from the use of products that contain hydroquinone, including rashes, facial swelling and skin discoloration that can be permanent.

From Washington Post

Corey L. Hartman, a dermatologist in Birmingham, Ala., says using hydroquinone without a doctor’s supervision can have serious consequences, including permanent darkening of the skin.

From Washington Post