Double process hair color requires mixing two different types of color and bleach. Learn how to mix double process color with tips from a professional hair stylist in this free beauty guide video.
Expert: Liz Muller
Contact: lizshairdesign.com
Bio: Liz Muller is the owner of Liz's Hair Design in Hollywood, Fla., who has been a professional hair designer and color specialist since the mid 1980s.
Filmmaker: Paul Muller
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