Hairitage Pass on the Brass Purple Hair Mask for Color-Treated Hair. Lock in purple pigments with this color treatment hair mask that transforms unwanted brassy undertones into cooler brighter highlights. This hair mask is specially made for blondes and can also be used on gray hair or dark hair with blonde highlights. Recommended for hair types and textures 1A–4C this vegan cruelty-free hair mas will revive and nourish dry dull color-treated strands with deep nourishment and hydration. 8 fl. oz