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3 years ago

What happens if you mix two different brands of hair dye?

Above image not my own, see source link.

Okay, so my hair is really really really thick and really long so i have to use 3-4 boxes of hair dye (Ridiculous, i know)
I was just wondering what would happen if i used the same colour but in different brands? Would a bad reaction or anything happen or is it safe?



Source link: http://www.suvarna.co.uk/user/Hair%20colour%20powder%20shades.jpg