Does "single process color" mean semi-permanent? I'm allergic to permanent hair color and can only use semi-permanent. (Not demi, either).
Kim G. asked on Mar 19, 2013
Single Process means that a new color is applied all over to create a new base color. For specific service questions, feel free to call directly at (508) 839-5530.
Ali V. from Groupon replied on Mar 20, 2013