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Can I use Loreal 40 volume developer with Garnier Brown color? Do I mix them together or use them separately?
Can I use Loreal 40 volume developer with Garnier Brown color? Do I mix them together or use them separately?
It's not recommended to mix different brands of hair dye and developer, as they may have different formulations that could react badly together. However, if you still want to use them together, it's best to test on a small strand of hair first before applying it all over.