COLOR EXTEND BLONDAGE express anti-brass mask 300 ml COLOR EXTEND BLONDAGE express anti-brass mask 300 ml is a hair mask from Redken. It is designed to help tone and refresh blonde hair, and is formulated with purple pigments to help neutralize brassy undertones and leave hair looking brighter and more vibrant. The mask is free of sulfates, parabens, and phthalates, and is also safe for color-treated hair.