Such a gorgeous, rich result achieved by Kathleen Austion (@hairgoddesskat), a stylist in Stockton, CA.  And she shared her formula on Instagram, so we are sharing it here:

FORMULA

BASE: 5.0 +5.1 with10 volume of Fanola

BALAYAGE: Fanola USA ORO 24k Bleach with 30 volume

TONERJoico A7 + N8