Matrix Total Results Brass Off Blonde Threesome softening, smoothing and protecting cr helps seal cuticles, while protecting strands from heat damage (up to 450F) for soft, touchable hair. The leave-in cr targets specific concerns when darker hair is lifted to a lighter shade-softness, manageability & protection.After using Brass Off shamp and cond, apply to towel dried hair, air dry or blow dry as usual.