Breanna Weinhold (@breebirds_hair) of Butterfly Loft Salon, Encino California, says her client first came to her with "bands of uneven blonde/yellow areas in her hair. She wanted to be one solid color of blonde with absolutely no yellow areas. I lightened all the yellow areas with Wella Blondor, 20 volume and Olaplex and used Blondor, 30 volume and Olaplex on the regrowth, from scalp to line of demarcation. I used to tone her with PM Shines 9BV.
