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Hydroquinone is a commonly used agent in skin whiteners. The European Union banned it from cosmetics in 2000. [9] It works by decreasing melanin production. [9]Tretinoin, also known as all-trans retinoic acid, may be used to whiten specific areas. [6]
[18] [19] Hydroquinone was the most commonly prescribed hyperpigmentation treatment before the long-term safety concerns were raised, [20] and the use of it became more regulated in several countries and discouraged in general by WHO. [21] For the US, only 2% is at present sold over-the-counter, and 4% needs prescription.
Hydroquinone, also known as benzene-1,4-diol or quinol, is an aromatic organic compound that is a type of phenol, a derivative of benzene, having the chemical formula C 6 H 4 (OH) 2. It has two hydroxyl groups bonded to a benzene ring in a para position.
Menadiol is an organic compound with the formula C 6 H 4 (COH) 2 (CH)(CH 3). It is formally a derivative of p-hydroquinone. The name vitamin K 4 can refer to: specifically this compound, [1] [2] its various esters, e.g. menadiol diacetate (acetomenaphthone), [3] [4] menadiol dibutyrate, [4] menadiol dimalonate, or [2] its various salts, like
Monobenzone, also called 4-(Benzyloxy)phenol and monobenzyl ether of hydroquinone (MBEH) is an organic chemical in the phenol family with chemical formula C 6 H 5 CH 2 OC 6 H 4 OH. [1] [2] It is used as a topical drug for medical depigmentation. [3] It is a colourless solid that is classified as the monobenzyl ether of hydroquinone.
In Ektachrome-type (E-6 process) [7] transparencies, the film is first processed in an unusual developer containing phenidone and Hydroquinone-monosulfonate. This black and white developer is used for 6:00 at 100.4°F (38°C), with more time yielding "push" processing to increase the apparent film speed by reducing the Dmax, or maximum density ...
6 smart money moves to make before and after Fed rate cuts (sefa ozel via Getty Images) With the Federal Reserve expected to announce its third rate cut in 2024 on December 18, you may wonder how ...
α-Arbutin is a synthetic substance that can be produced by enzymatic glycosylation of hydroquinone in the presence of α-amylase and dextrin.In one example, this has been done in recombinant Escherichia coli, using amylase of Bacillus subtilis and sucrose phosphorylase of Leuconostoc mesenteroides.
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