DEVACURL No-Poo Blue Anti-Brass Zero Lather Toning Cleanser is new for ultimate Curl Flexibility. Our formulas are dermatologist co-developed, backed by science and stylist approved. If you have color-treated curls, this non-lathering, toning cleanser with the Smart Porosity Neutralizing Complex helps equalize porosity for instant uniform toning that helps reduce brassiness. Leaves curls vibrant, nourished, bouncy and shiny.