A double process color refers to a two-step service. This is generally done by either lightening the hair first, then going in after and applying a color or glaze, OR this is done by applying a color then following up again with a color (permanent, demi, or semi).

What is an example of a double process color service?

WHAT IS DOUBLE PROCESS COLOR? At this point, you can probably guess what a double process color is—two coloring services done in a single visit to achieve your desired outcome. This includes processes like using bleach to lighten and following with a toner or using a permanent hair color followed by a gloss or glaze.

What is the difference between single process and double process color?

A single process can mean an all-over color or a touch up. Double process is when two processes are done in one service, such as highlights and then toning, or a single process color with a gloss.