Paul Mitchell The Demi Demi Permanent Hair Color 9MT is a shade of hair color that falls under the category of demi-permanent hair colors. This particular shade is a combination of a level 9 Light blonde with metallic taupe tones. Demi-permanent hair color is a type of hair color that contains a small amount of peroxide and lasts longer than semi-permanent hair color, but not as long as permanent hair color. It usually fades after about 20-28 shampoos, depending on factors like hair porosity and color intensity. The Demi line from Paul Mitchell is designed to provide a range of natural-looking hair color shades with shine and condition. It's formulated with a unique protein-rich KeraReflect blend that helps to improve hair condition and add shine. This line is also ammonia-free, which makes it less damaging and less likely to cause irritation on the scalp. As with any hair color, it's important to follow the instructions carefully and conduct a patch test before using to avoid any alle