Recent Examples on the WebWhitening agents, which tend to be bleaching chemicals like carbamide peroxide or hydrogen peroxide, break up the chromogen so that it can be easily washed away.
Sarah Jacob, SELF, 13 Aug. 2021
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Term introduced by the Scottish chemist Thomas Charles Hope (1766-1844) in "Observations and Experiments on the Coloured and Colourable Matters in the Leaves and Flowers of Plants," a communication read on March 21, 1836, to the Royal Society of Edinburgh and published in the Society's Transactions, vol. 1, no. 6 (1836), pp. 126-28.