Brunettes Will Swoon Over These Fall-Friendly Rainbow Hair Ideas

The color: Slate Violet

Description: "This color melt is perfect for brunettes who have a platinum blond balayage from the Summer," said Edelman, who noted that dark roots will help blend the color's transition from purple into dark silver. "It's got the seasonal depth while remaining metallic and edgy."

Who it works for: Because of the naturally cool coloring of this hue, it will look best on those with cool or neutral undertones. If you have light eyes, the stormy base of this dye job will make your irises look even more piercing.

Technique: "Ask your colorist for a color melt," she recommended, "with deep violet at the root, medium slate-gray on the midsections, and a silver on the ends."