When hair is lifted more than 5 levels during the coloring process, what is this referred to as?

When hair is lifted more than 5 levels during the coloring process, this practice is specifically known as double processing. Double processing typically refers to the technique where hair is first lightened (bleached) to a desired level and then treated with a toner or another color to achieve the final shade. This method is necessary because lifting hair more than 5 levels can cause significant structural damage if not performed with care and often requires a follow-up application to achieve the desired tone.

The term "high lift" is often used for products designed to lighten hair significantly in a single application, but it does not capture the dual-step nature of the process. "Full lift" is not a commonly recognized term in this context and may lead to confusion about the extent of the lift. Similarly, "triple processed" implies an even more complex series of applications but does not accurately describe the situation where only one additional step (toner or color) is added after the initial bleach. Thus, double processed is the correct terminology when referring to lifting hair more than 5 levels.