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 ...

- Multi-dimensional color techniques create the illusion of volume and depth by using multiple shades instead of single-process color. - Root shadowing and baby lights can transform sparse areas by ...

Switching up your hair color is one of the most fun you can have when transitioning your look. Sure, getting a new manicure and experimenting with new makeup techniques can also feel exciting, but ...