JawJaw, as someone with a hairdressing and coloring license, if you put the haircolor on the front first and then apply it to the rest of your head, it might make a difference. That just means the hair around your face is healthier and more resistant to the chemicals in hair dye.

Also, you could try putting a bit of bleach on the front first , just briefly, then wash it out and let your hair dry, just to open the hair shaft prior to applying the color.
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Aarikja Ann