I absolutely love Malibu C Un-Do-Goo Shampoo! It is perfect for keeping my blondes bright, clarifying on especially younger clients who love the pool or don't shampoo well on their own and my clients with hard water. I love it before toning my blondes to ensure there is no build up on the hair, or removing a little excess toner if it grabs. Love it! Couldn't go without it. :)