Matrix Color Insider, Hair ColorColor Concentrate – Blue

*Packaging may appear different due to brand manufacturer update. **Shade name may differ, however, as long as the shade number is correct, the color will be correct. For instance, 6A may say "light brown ash" or "dark blonde ash". It’s the same color simply described differently.What it is: Take your color-mixing skills to the next level with Matrix ColorInsider Pure Color Concentrate. This color boost is designed to be used with ColorInsider hair color. It comes in super bold, concentrated pigments, like blue, yellow, orange, and more.What it does: This color concentrate adds pigment to existing hair dye, enabling you to create any color you can imagine. It also adds a noticeable vibrancy to similar colors – for instance, add the "red" booster to a red color to make it more vibrant. You can also make a subtle change or mix it with an entirely different color to create an all-new shade.What else you need to know: ColorInsider color booster has no ammonia, so it will not lift the hair. Read the included instructions to assist with the color mixing process.What it is: ColorInsider Concentraites provide endless color possibilities to customize your color. It can be used to boost any ColorInsider formula with pure tones, customize your palette to create unique shades, counteract undertones for neutral results.