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Hi,
Is it possible to make the navy blue procion dye colourfast?
I want to dye a 100% cotton white shirt.
Regards,
Brian
All Procion Dyes are colourfast Brian. You need to add some Soda ash somewhere in the process - it is the mordant or reactor, but once the excess dye is washed out the colour is permanent, colourfast and very light fast
Cecile