7AA Dark Blonde Ash Ash
What it is:
If you want a calm, cool hair hue, you need Matrix ColorSync Power Cools demi-permanent hair color! These colors have an undeniably cool tone, perfect for brunettes who want ash tones that stay true-to-color. The dye comes in several color options, like dark brown ash, light brown violet ash, and more.
What it does:
This demi-permanent hair dye deposits color molecules on the hair. It does not lift the hair because there is no ammonia. The color will last from 6 to 8 weeks.
What else you need to know:
The results you get will depend on the developer that you use. Use a 10-volume developer for the coolest possible result. If you want the color to turn out a bit warmer, go with a 20-volume developer.