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 ...

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- 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 ...

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

Anyone who colors their hair knows that it can be a time-consuming, expensive and meticulous process. The last thing you want is to ruin a perfect single-process or fresh highlights by using the wrong ...

Single-process color completely changes your hair color and is great for a dramatic change or covering grays. Double-process color involves bleaching the hair before adding a new color, offering ...