Add Some Re-Boost are pigment-rich and toning color treatments that revive your hair color with new life and shine. The result lasts approximately 4-10 washes, depending on hair quality and color shade.
I bought bright copper and overall it’s good, good with pigment, easy to use and relatively long-lasting. The only negative is that it turned more towards the red side even though I mixed it with conditioner about 60/40, but it faded to a copper-like color after 2 showers. I let it sit the first time for 5 minutes and then the color lasted about 6 showers. The second time 10 minutes and then the color lasted about 8 showers. In summary, the color lasts longer the longer you let it sit, but the color also becomes more red.
Throwing out a big OBS, I accidentally got some color on a towel and it sat for about 30 seconds before I washed it away, but it still left a stain...