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Ancient Asian cultures also associated light skin with feminine beauty. "Jade" white skin in Korea is known to have been the ideal as far back as the Gojoseon era. Japan's Edo period saw the start of a trend of women whitening their faces with rice powder as a "moral duty". Chinese women valued a "milk white" complexion and swallowed powdered ...
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.
[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.
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.
Kligman formula consisting of 0.1% tretinoin, 5.0% hydroquinone, 0.1% dexamethasone, and hydrophilic ointment. [12] The dermatologist gold-standard formula for treating hyperpigmentation is the Kligman formula, a prescription named after its inventor, dermatologist Dr. Albert Kilgman.
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.
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Hydroquinone is used to reduce the activated silver ions to metallic silver. During this process, hydroquinone is oxidized to quinone. All silver halide not activated by light or reduced by hydroquinone is removed, leaving a negative by deposited silver where the film had been struck by light. [18]