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Patent Granted The main targets of bleaches are of vegetable origin and include chlorophyll, anthocyanin dyes, tannins, humic acids, and carotenoid pigments. Most bleaches in laundry detergents are oxidizers, e.g., sodium perborate or sodium hypochlorite. In addition, other agents are added as "bleach activators", to enhance the effectiveness of the bleaching agent; a popular one is tetraacetylethylenediamine.