Two words I will say. BUT HAIR!!!!! I have been doing highlights for ten years, as my hair is brown and I dye it purple, so the struggle is real. The difference in feeling and texture is noticeable from the first wash. I bought it after my hairdresser's recommendation, along with the Redken Extreme Shampoo, and I haven't regretted it at all. Just one observation: on the days when I am feeling unwell or under the weather, my hair gets greasier and faster with the use of this specific product. Maybe it's due to hormones or the conditioning action of both products together that makes them oilier, so I wash my hair sooner and the issue is resolved. I hadn't noticed this with other shampoos.