Cenk Yesil (@cenkinz) of Hair Point 2000, Hilpoltstein, Germany had quite the challenge with his first time client. Here he shares the details for the correction:
STEP 1: Using Selective Professionals Decolorvit Plus lightener, apply in a freehand balayage technique throughout the hair in zig zag partings. Process to desired lift.
STEP 2: Process for 30 minutes.