Health and Beauty Coloration Matrix SoColor Pre-Bonded Permanent Dye 90 ml 5Av Pre-mixed permanent hair color that delivers brilliant color right on target. Our permanent and demi-permanent oxidative hair colors blend seamlessly, so you can achieve consistent color, from scalp to ends, that lasts and fades in tone. premixed Our formulas are pre-mixed with background + reflect, so you can neutralize all the underlying pigments. How to use: Standard mixing time: 30 to 45 minutes (full 45 minutes for resistant gray hair) High Impact Chestnuts: 1:1.5 mix ratio, 35 minute mix time Ultra.Blonde: 1:2 mix ratio, 50 minute mix time Reflect Collection Metallics: 1:1 mix ratio with 20 Volume or 30 Volume Matrix Cream Developer. The time is 35 minutes.