A breakdown of the real differences, and which one's best for you. Reviewed by Jeremy Tardo Fact checked by Lisa Sullivan Single-process color completely changes your hair color and is great for a ...

There are plenty of things to consider when it comes to choosing a hair color. Do you want a single-process or a double-process treatment? Do you need to lift your base shade over a number of ...

Give your hair a break.

Because you don’t need to sacrifice salon-quality results when changing up your hair color.