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Acid Blue #9


Acid Blue 9 is a colourant, or dye. It is one of the most widely used and tested dyes in consumer products, and can be found in clothing and coloured paper. We add dyes to products for a variety of reasons including helping you see where you applied the product, when a product is used up, or for aesthetic reasons. This dye is available from multiple suppliers, which are responsible for its contents.