It really depends how light your hair is. I stopped using solely bc of the red tones, but the color was very vibrant and lasted a couple weeks with minimal washing. I gave it three stars mostly because the fading isn't really uniform.
How do you use beyond the zone hair dye?
Pour desired amount of Beyond the Zone Color Jamz Semi-Permanent Hair Color into a non-metallic bowl. With gloved hands, apply directly to the hair using a tint brush or comb. Do Not apply to the scalp. Process 10-20 minutes depending on desired intensity.