Biolage by Matrix Color Care Shampoo
By far, this is the best drug store shampoo for color treated hair. I think you may be able to find a salon brand that is equal, but for the price, this is a must have for women who color their hair (and who doesn't?). The shampoo has a pleasant scent, is effective at lifting oils but will not strip color. It leaves hair manageable and soft. Not weighed down by any means. I do not need conditioner when I shampoo with this. This is great for highlights, all over color or if you're covering grays.