The perfect blue shade doesn't exist—wait, it totally does thanks to Nine Zero One Salon co-owner and celeb stylist Nikki Lee (@nikkilee901)! Nikki gave our dream girl Hilary Duff a full-foil highlight and mixed up some cool shades for the perfect blue blend. Keep scrollin' for the color formulas, how-to and a pro tip to prevent unwanted green tones!
Nikki's Celeb Color Notes:
"Hilary is no stranger to a fun hair color," said Nikki. "She colored her own hair teal during lockdown. This mix of blues just hits different on her though! She is goals in…
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