It used to be that you always had to read the label before washing clothes, to avoid too tight pullovers, pale pink shirts that used to be white, and denim jeans tinting everything blue.
Now Rebecca Davis, associate professor in fashion and textiles at California State University at Los Angeles recommends that you read the label before smearing yourself with ketchup or spilling red wine down your front.
While Nano-Tex have introduced a new labelling system to make this easier, as with all other areas of nano, it is worth checking exactly what flavour you are dealing with.