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  1. M

    Majirel and 9 vol developer??

    Is it possible to use Majirel and a 9 vol (2.7%) developer for refreshing mid-length and ends (same level or darker)? I'm asking as I'm trying to move over to loreal, from a brand that used 1 colour tube, that you changed your developer from 20/30vol (for permanent) to a 10 vol for demi or a...