Co-wash feature - into the gloss

"The Starter Co-wash: Unwash Bio-Cleansing Conditioner
What "Bio-Cleanse" sounds like is a fad celebrity diet. What it actually is, though, is a Skittle-scented wash best suited for those who are wary of the idea, but intrigued enough to try. Unwash the brand prides itself on a system of co-washing products, and the Bio-Cleanse is that system's patriarch. It's also one of the few in this class of product that's recommended for all hair types, including finer or oilier hair." - Into the Gloss 

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