chwarzkopf BC Color Freeze Treatment Care-Boost Complex Mask 200ml is a rich, creamy, comforting mask specifically formulated for the needs of color-treated, highlighted, or over-processed hair. Imbued with the exclusive pH 4.5 Balancer Technology, this mask acts deep within the hair strand to not only restore the hair to its optimal pH value, but actually stabilize and strengthen the hair matrix, keeping the color pigments locked inside the hair. The high-performance formula also includes vegan keratin, which, combined with the patented Cell Equalizer Technology, fills in structural gaps in the hair in order to restore elasticity, strength, and shine to the hair strand. After just one application, this mask leaves the hair softer, smoother, with professional-looking shine and vibrancy.