Amika Bust Your Brass Cool Blonde Intense Repair Hair Mask is a rich ultra-violet toning, strengthening and hydrating mask. Formulated with high-quality ingredients, including bond cure technology, plant butters, vegan proteins and ultra-violet pigments, this Amika hair mask brings blonde back to life and makes hair 8x more conditioned, 2.2x stronger and 56% less breakage. This hair mask provides ultimate hydration for thirsty hair and gets rid of unwanted brassy tones and yellowness. The Amika blonde hair mask is vegan, cruelty-free, paraben-free and sulfate-free.