What It Is Deep conditioning toning hair mask for neutralizing yellow tones in blonde hair and enhancing tones in silver hair. What It Does Take your toning to the next level with the So Silver Triple Power Blonde Neutralizing and Silver Enhancing Hair Mask. Brighten and banish unwanted yellow tones in blonde hair, add beautiful silver tones to platinum hair, or turn your gray into a stunning silver. Spectacular deep conditioning will leave hair feeling silky smooth and progressive technology gives the option to tone to your desired effect.