Redken's Color Extend Blondage Express Anti-Brass Mask is an ultra-pigmented purple hair mask and deep conditioner that ensures brighter, cooler blonde haircolor in just 5 minutes. Featuring a powerful purple toning formula, this hair mask helps to color correct and neutralize unwanted yellow undertones in even the brassiest blonde hair color. Ultra-pigmented purple hair mask for blondes Neutralizes brassiness on blonde hair for a cool, bright end result Offers 5-minute instant transformation Corrects unwanted yellow on blonde hair