COMBAT YELLOW UNDERTONES AND FIX BRASSY HAIR As the trend for lightening continues to grow, so does the need for a wider range of neutralization services Ð across both lighter and darker bases. Regularly required for home maintenance or color correction services in the salon, 'neutralization' is commonplace in the world of blondes, where cooler tones are often more desirable. However, darker hair has neutralization needs too, where orange undertones can show after lightening. Building on the Ôtoning no tonerÕ concept our highly pigmented GOODBYE YELLOW and GOODBYE ORANGE Neutralizing Bonding Washes provide unique neutralization no matter the base.