Unexpected brass or orange tones are the sworn enemies of flawless blonde strands like Reese Witherspoon's, but if your shade starts to shift, there are a few easy ways you can combat it.
"The most common method is to use a violet-tinted shampoo, like Clairol's Shimmer Lights ($9 and $13; sallybeauty.com). The purple neutralizes yellow or gold tones in blondes," said Mariah Carey's colorist Kyle White. "Another way to get rid of brass is to go lighter and lift hair beyond the orange level. When getting your hair colored professionally, colorists have an arsenal of toners that are stronger and more permanent than shampoo, including even more tints that neutralize orangey colors."Read MoreLess