Malibu C Un-Do-Goo Shampoo is a pH 9 clarifying shampoo made to strip stubborn styling-product buildup, excess oil, and dirt from hair without the heavy stripping effect of a typical clarifying shampoo. The elevated pH temporarily swells the hair cuticle so the sulfate-free cleansing formula can lift buildup that sits on and inside the hair shaft, then the cuticle settles back down once rinsed.
It's commonly used before a chemical service such as color, perms, or keratin treatments, since it resets hair to a cleaner starting point, and it's formulated as a 100% vegan, sulfate-free shampoo. Because of its higher pH, it's meant as a periodic reset rather than a daily shampoo — most people use it once or twice a month, more often if they use a lot of styling product.