How to Get Celebrity-Caliber Hair Color

Blake Lively, aka the new Mrs. Ryan Reynolds has the dye job you're dying for—62 percent of colorists say their clients beg to be golden like Lively.

Ask your colorist for: Butter blonde base plus ivory highlights plus butterscotch and apricot lowlights.

Looks awesome on: Chicks with cool skin. Blue or green eyes play well, too—they're yellow's neighbors on the color wheel. And you might want to work a spray tan: The hottest blondes have a contrast between hair and skin, says Kyle White, a colorist at Oscar Blandi in New York City.

Tweak it if you have...

Warm skin:Your natural hair likely has red in it, so uberblonde can be brassy. A better bet is a dark blonde base with buttery streaks, says Candace Bossendorfer, an Aloxxi Hair Color Expert in Los Angeles.

Pale skin: Opt for a few more lowlights. That way, your hair and complexion won't be all matchy-matchy.

Use a low- or no-sulfate shampoo and a conditioner with antioxidants, color protectors, and hydrators. Our faves: Bumble and Bumble Color Minded Shampoo, $29, and Conditioner, $32.

Coating strands with a UV-blocking oil (don't worry—it's not that greasy) saves hair from Kermit comparisons, bleaching and dulling. Try L'Oreal Professionnel Mythic Oil Colour Glow Oil, $32.

Switch to a tinted on (we like Paul Mitchell Forever Blonde Platinum Blonde Shampoo, $13) once a week. It leaves behind and undetectable layer of violet color, which neutralizes brassiness.

Kate Middleton. When it comes to brown locks, the Duchess reigns: 43 percent of colorists say their clients want to copy her warm chocolate hue.

Ask your colorist for: Milk chocolate base plus caramel highlights.

Looks awesome on: Just about everyone. With cool or warm skin, dark or light eyes, brown done right is universally flattering, White says. It looks insanely amazing with light eyes (lucky you, Kate) because the contrasting combo is pretty rare.

Tweak it if you have...

Freckles and light eyebrows: Warm medium brown will wash you out. Try espresso instead, so it's not mousy, Bossendorfer explains.

Superlight hair: When roots come in, it could look like thinning. Prepare for constant touch-ups, or do low-maintenance light-brown lowlights.

Make a color-safe, tone-enhancing shampoo and conditioner you go-tos, and you'll stay just-got-my-hair-done fab. Our picks: Pantene Pro-V Brunette Expressions Daily Color Enhancing Shampoo and Conditioner with Liquid Crystals, $5 each.

Over time, sun exposure—even in short spurts—can turn warn brown into pumpkin, White says. Every morning, spray hair with a lightweight UV-shielding leave-in, such as BlowPro Time to Shine 3-D Illuminating Mist, $21.

When your brown borders on brassy, mix a scoop of Grape flavor in a cup of water and comb through dry hair in the shower. Rinse after five minutes. The drink mix gives hair a bluish cast that erases rusty hints, White says.

Amy Adams. Sorry, Ariel: 43 percent of colorists report that their clients are enchanted with this actress's rosy, mermaid-worthy shade.

Ask your colorist for: Golden copper base plus rose-gold highlights.

Looks awesome on: Ladies with warm, peachy skin: Green undertones compliment red. Sure, light eyes are piercing with siren hair, but brown-eyed girls can totally pull it off, too.

Tweak it if you have...

Cool skin: A full head of fire-engine red can make blue-tinged skin seem icy. Add crimson ombre pieces at ends, Bossendorfer says.

Medium to dark skin: Experiment with the tipping technique above, or wild out like Rihanna and rock an overt cherry red.

Red peaces out faster than other shades because pigment molecules are tiny and easily escape porous strands, says Michael Canale, a colorist in Beverly Hills. Replenish color with a glaze like Ulta Ultimate Red Color Restoring Glaze with Vibrant ColorComplex, $10.