u/Beneficial-Dig-26

I would like to refresh black colour on my naturally brown hair with more professional dye than box hair dye so I decided to dye it with matrix socolor but i need to buy oxidant separately and i m not sure if i should choose 3% or 6% or perhaps even more. My hair is in the colour of medium or dark brown something like that. Thanks in advance for any advice.

I jailbroken my ipad with taurine, what to do now?☹️