If you have tinted someone's hair 8/03 Koleston which threw out waaaaaaay too much gold and its lifted over 4 weeks to a really light blonde what would you use to take it back to something like a 8 would you just stick 8 on ?
When I spoke to wella 0 is not green based. The 0 are only used to soften the tone it doesn't neutralise any of the tones.
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