I use colourshines clear with 4 consecutive touchups, about once every 3 months, and it did deliver blinging shine! However, I THINK it started to make my hair thinner -- it was the only "different" variable in my routine -- so I stopped. Still got half a bottle and will use more sparing in future and save for special occassions, also will NOT apply on touchup day, but space it out a couple of weeks after. It's possible that the combo of relaxer AND colourshines was too much for my hair . . .