The John Frieda Colour Correct Anti-Brassy Treatment aims to bring out the ideal colors in those with blond hair. This hair product is available in a 4-oz tube. The John Frieda Sheer Blonde Colour Correct is created with a special treatment formula that helps to tame hair that has gone off-color because of prior chemical processing. This hair solution is a unique 6-in-1 blend that works to rebalance color effectively. The anti-brass hair treatment also is designed to brighten and revitalize color for a salon-quality results. The treatment can help to reduce brassiness in hair. The John Frieda treatment works to cleanse and soften blond hair. This bottle of hair treatment strives to give hair a boost of shine for ideal results. To use the color correct, apply it to wet hair, let it sit for a minute and then rinse it out well.