Hair Coloring 101: Single vs. Double Process

By  February 15, 2008

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Hi BJ! I had to ask the same question a few years ago… I didn’t know the difference either! Here’s Rita Hazan’s response…

A single process is either permanent or semi-permanent color that alters your natural hair color either darker or lighter. This is just one-dimensional color, meaning your whole head of hair will be the same. For example, I only do a single process on Debra Messing. There are no highlights, so it is very one-dimensional.Debra Messing

A double process is a single process plus highlights. So you color your hair one shade and then add highlights to give it a multi-dimensional look, like Jessica Simpson. For most people this helps it look more natural. She colors her natural hair to a golden blonde and highlights on top of it with baby blonde highlights for a more natural blonde affect.Jessica Simpson

Have questions for Rita Hazan? Send them to me at beautyeditor@glam.com!

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[tags]Glam Media, Glam.com, Glam Blush, GlamBlush, Beauty, Debra Messing, Jessica Simpson, Rita Hazan, hair color, single process, double process[/tags]

**Photos Courtesy of Glam**