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Colourant based on indigo precursor giving fast blue dyeing of keratin fibres, especially human hair
Colourant based on indigo precursor giving fast blue dyeing of keratin fibres, especially human hair
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机译：基于靛蓝前体的色料，可对角蛋白纤维（特别是人发）进行快速蓝染
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摘要
Colourant for keratin fibres is obtained by mixing a colour base containing a 3-indolyl pyranoside of formula (I) with a hydrolase, just before application; in which R = a DL-, D- or L-(aldo- or keto)-pyranose; X, Y = H, halogen, OH or 1-4C alkoxy. Also claimed is a method of colouring hair which comprises applying the colourant to the hair and allowing to act for 10-45 minutes at 15-50 deg C, rinsing, shampooing if necessary and drying.
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