OGX Blonde Enhance Purple Toning Shampoo. Brass be gone with OGX Blonde Enhanced + Purple Toning Shampoo! This highly pigmented and potent dark purple toning shampoo is easy to use and helps get rid of brass with every rinse. Use it to brighten and color-correct yellow tones on silver, pre-lightened or natural blonde hair with strengthening ingredients like keratin, purple fig and iris. After rinsing, follow it up with your favorite conditioner—maybe add a few drops of OGX Purple Toning Drops to enhance the effect. Banish unwanted, brassy tones.