Majicontrast Highlights - what peroxide to use?

[sarah111]

Im using loreal majicontrast magenta on a friend...she has had highlights before but they have grown out...so her roots (2 inches) are a dark brown and her ends are more of a coppery light brown....now i wanna do highlights (weaved)..but im worried if i use a high peroxide for the roots the ends wont cover..and will look faded...
what % shall i use so it all looks even???

Thanks!

 

[Bluerinse]

Don't use anything above 20 vol as it will blow the colour molecule


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[wonderwoman]

it will cover just fine, with majicontrast id stick to 20 vol xoxo

 

[Sharry]

I agree with geeks I have majiconrast on my hair with 20vol