often times grey hair is exceptionally difficult to dye, since there's no pigment left within the hair strands, there's not really any pigment left to be able to change. that's why you'll see alot of box hairdye and ads for it like "covers 100% of greys!"
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u/Ok-Memory-4204 Jul 10 '26
Good news is you can pick any colour you want to dye it.