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 (hī′drō-kwĭ-nōn′, -kwĭn′ōn′) also hy·dro·quin·ol (-kwĭn′ôl′, -ōl′)
A white crystalline phenol, C6H6O2, used as an antioxidant, photographic developer, stabilizer, and reagent.


(ˌhaɪdrəʊkwɪˈnəʊn) or


(Elements & Compounds) a white crystalline soluble phenol used as a photographic developer; 1,4-dihydroxybenzene. Formula: C6H4(OH)2. Also called: quinol


(ˌhaɪ droʊ kwɪˈnoʊn, -drəˈkwɪn oʊn)

also hy•dro•quin•ol

(-ˈkwɪn ɔl, -ɒl)

a white crystalline compound, C6H6O2, formed by the reduction of quinone, used chiefly in photography and to inhibit autoxidation reactions.


n hidroquinona
References in periodicals archive ?
Fade Out does not contain hydroquinone which has been a banned substance in the EU since January 2001.
ZO Non-Hydroquinone Hyperpigmentation System -Ideal for the treatment of hyperpigmentation without the use of hydroquinone, or as a healthy maintenance system after a course of hydroquinone for 4-5 months.
Study 4581 - Treatment of Moderate or Marked Melasma in Darker Skin with a Four Percent Hydroquinone Skin Care System Plus 0.
Available through physicians, including dermatologists and plastic surgeons, it is billed as the first and only regimen offering the benefits of both prescription strength hydroquinone and stable Vitamin C in one comprehensive system.
85% of patients saw a greater improvement in overall skin condition after 12 weeks of treatment, as compared to 68% of patients treated with 4% hydroquinone.
Tri-Luma is the only FDA-approved product containing hydroquinone 4% to treat melasma patients safely and effectively.
3-1 Import and export of hydroquinone in China, 1998-2011
Nasdaq: OMPI), a leader in topical aesthetic and therapeutic skin health systems, announced the results from a new clinical study evaluating the efficacy of a hydroquinone skin care system (Nu-Derm[R]), plus tretinoin, in decreasing the severity of melasma, particularly in skin of color patients.
introduces the new Lumixyl(TM) Brightening System, a revolutionary multi-faceted approach to effectively treat hyperpigmentation without irritation or other side effects associated with prescription Hydroquinone or retinoids.
However, only 11% of the surveyed women expressed a strong familiarity with an ingredient considered by many dermatologists to be the gold standard in treating certain pigmentary disorders - hydroquinone.
MRG's US Markets for Physician-Dispensed Cosmeceuticals 2009 report finds, however, that product safety issues involving hydroquinone, the active ingredient in many pigment control products, have led the Food and Drug Administration (FDA) to second guess the use of the compound in such products.