To fix blonde hair that is too brassy, use a shampoo or a conditioner that contains hues such as violet or blue. Moisturizing treatments can also help correct brassy hues.
Blonde hair colors contain several different pigments, including warm colors such as red and yellow and cool colors such as blue. As hair color fades, the cool hues tend to wash away first, leaving the warmer hues in the hair. This creates a brassy effect.
Shampoos and conditioners that contain violet or blue color can add cool pigments back to hair, which balances out the brassy effect. Examples of violet and blue shampoo include Dessange Paris California Blonde Brass Color Correcting Creme, Keratin Complex Blondeshell Shampoo and Joico Color Endure Violet Shampoo.
Glosses such as L'Oreal Paris Brass Banisher and John Frieda Color Refinishing Gloss can also help treat brassy hair. Blondes can apply refinishing glosses once per week and leave them in for up to 5 minutes.
Moisturizing hair helps keep blonde hues looking shiny and bright. Blondes can use hair masks or other moisturizing treatments to help preserve the color.
The sun can bleach hair and cause pigments to fade. Blondes can protect hair from sun damage with scarves and hats or apply a spray with a UV filter before going out in the sun.