As much as I was happy with the results, it didn't last as long as I had hoped. The salon people told me that ion color brilliance was the best one for coloured dye, but it seems to be just as ineffective. Who knows if it didn't last on my part because I didn't put in the product to lock the colour or cause I didn't properly wash the bleach out prior or maybe cause I didn't use shampoo and conditioner for colour treated hair, who knows. But I will find out this next time around when I dye my hair again and do everything properly. Wish me luck.