InStyle.com

Shop by Color

Twitter

Courtesy Photo

Full Color: Key Product

Perry's hairstylist Rita Hazan recommends her Ultimate Shine Foaming Clear Gloss ($26; ritahazansalon.com) to keep fading to a minimum. "Try to wash hair only a few times a week—the less you wash, the better—since rainbow shades have a short lifespan," Hazan said.

Quick Links:

More Photo Galleries

Most Popular on InStyle.com

Please Note: You may have disabled JavaScript and/or CSS. Although this news content will be accessible, certain functionality is unavailable.

Skip to news content.

Shakira’s Full, Sexy Hair Take Center Stage on This Week’s The Voice

Shakira’s Full, Sexy Hair Take Center Stage on This Week’s The Voice More

Cannes Film Festival Fashion Continued: Jessica Chastain, Sharon Stone, and More

Cannes Film Festival Fashion Continued: Jessica Chastain, Sharon Stone, and More More

The Most Popular Dress of the 2013 Cannes Film Festival

The Most Popular Dress of the 2013 Cannes Film Festival More

Stars Come Out to Celebrate Jimmy Choo’s Launch of “The Season,” and More Party Pics

Stars Come Out to Celebrate Jimmy Choo’s Launch of “The Season,” and More Party Pics More

Reader Poll: What’s Your Purse-onality?

Reader Poll: What’s Your Purse-onality? More

The Cannes Film Festival’s Most Memorable Looks, from Princess Diana to Queen Beyonce

The Cannes Film Festival’s Most Memorable Looks, from Princess Diana to Queen Beyonce More

The Feel-Good Story Behind Pippa Middleton’s Floral Dress

The Feel-Good Story Behind Pippa Middleton’s Floral Dress More

We Did It! InStyle.com Predicted Kate Middleton’s Latest Look

We Did It! InStyle.com Predicted Kate Middleton’s Latest Look More

Inside the Bulgari and Cleopatra 50th Anniversary Reception With Jessica Chastain

Inside the Bulgari and Cleopatra 50th Anniversary Reception With Jessica Chastain More

This Is Why We Love Now You See Me Star MÃ©lanie Laurent

This Is Why We Love Now You See Me Star MÃ©lanie Laurent More

Trend to Try: Wild Hair Colors

BACK

11 of 11

NEXT

Full Color: Key Product

UP NEXT:Question

SEE ALL LOOKS

Advertisement

Look of the Day

Lea Michele

Lea Michele was pretty in Alon Livné's pink

TRENDS THIS SEASON

Sites We Love

InStyle.com is part of the Time Inc. Style Network Copyright © Time Inc. InStyle is a registered trademark of Time Inc. All rights reserved.