Can I mix 10 and 30 volume developer

Can I Mix 10 and 30 Volume Developer ( Also Other Volumes)

The hair developer comes with a hair dye and bleach kit, or you can buy it separately. If you are someone like me who experiments with hair colors, you might have different volumes of the developer on the shelf. Did you imagine what would happen if you could mix 10 and 30 volume developers? Or …

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