David John (@davidjohnla on Instagram) does consistently stellar work at Sally Hershberger LA. This beautiful color and fresh shape caught our eye, once again, and we asked him to share his formula for success.
PROCESS
Balayage formulas:
Highlight: L'Oreal Studio Lightener plus 20 volume
Lowlight formula: L'Oreal Dialight 6.3 + 9 volume
Tone with L'Oreal Dialight 10.12 plus 9 volume
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