Beverly Hills, September 27, 2009
A previously blond Jessica Alba switched things up and ran errands in Beverly Hills with this new auburn hair color.

X17online.com

England, September 10, 2009
Heather Mills has given up her platinum Posh/Kate Gosselin 'do for an auburn look. Here, she debuts the new shade at a photo op for an animal rights event.

PA

Rumer Willis at the Genlux Magazine's BritWeek Designer Of The Year Fashion Show and Awards
There's no doubt that Demi Moore's daughter is all grown up! Rumer has been hitting red carpets in bold attire and even bolder locks.

Jean Baptiste Lacroix, WireImage

Nicole Kidman on Malibu beach at a VOGUE photoshoot
Nicole has been wearing her hair blonde for years now, but the actress has made a return to her Tom Cruise era ginger locks. Could there be reconciliation in the future for the two? Maybe.

Flynet

Evan Rachel Wood at the 18th Annual Gotham Independent Film Awards
After two years as Marilyn Manson's lady love Evan Rachel Wood is single again. No doubt trading her dark gothy locks for this beautiful light red is a signal that she's over the shock rocker and the non-stop comparison to his ex-wife Dita Von Teese. Welcome back from the dark side!

Jemal Countess, WireImage for IFP

Kate Walsh at the Los Angeles Premiere of Kicking and Screaming
Walsh's character on Grey's Anatomy was only supposed to appear for five episodes, but she was so popular she ended up with a spin-off series Private Practice. Must've been the hair!

John Sciulli, WireImage.com

Julianne Moore at the 61st Annual Cannes Film Festival
The actress and Revlon spokeswoman rocks this dramatic hair color on red carpets and commercials alike.

Mike Marsland, WireImage.com

Cynthia Nixon at an Academy of Arts & Sciences Event
You may be surprised to learn that one of Hollywood's best-known redheads is naturally blonde!

Dimitrios Kambouris, WireImage.com

Amy Adams at the 80th Annual Academy Awards in Los Angeles
Adams' red mane, styled in loose curls and parted to the side, looks classic and elegant with her jewel-toned dress.

Chris Pizzello, AP

Nicole Kidman at the New York Premiere of The Others
The very lucky Aussie vixen was not only blessed with mile-long legs, but perfect hair color as well.

Jim Spellman, WireImage.com

Beverly Hills, September 27, 2009
A previously blond Jessica Alba switched things up and ran errands in Beverly Hills with this new auburn hair color.

X17online.com

England, September 10, 2009
Heather Mills has given up her platinum Posh/Kate Gosselin 'do for an auburn look. Here, she debuts the new shade at a photo op for an animal rights event.

PA

Rumer Willis at the Genlux Magazine's BritWeek Designer Of The Year Fashion Show and Awards
There's no doubt that Demi Moore's daughter is all grown up! Rumer has been hitting red carpets in bold attire and even bolder locks.

Jean Baptiste Lacroix, WireImage

Nicole Kidman on Malibu beach at a VOGUE photoshoot
Nicole has been wearing her hair blonde for years now, but the actress has made a return to her Tom Cruise era ginger locks. Could there be reconciliation in the future for the two? Maybe.

Flynet

Evan Rachel Wood at the 18th Annual Gotham Independent Film Awards
After two years as Marilyn Manson's lady love Evan Rachel Wood is single again. No doubt trading her dark gothy locks for this beautiful light red is a signal that she's over the shock rocker and the non-stop comparison to his ex-wife Dita Von Teese. Welcome back from the dark side!

Jemal Countess, WireImage for IFP

Kate Walsh at the Los Angeles Premiere of Kicking and Screaming
Walsh's character on Grey's Anatomy was only supposed to appear for five episodes, but she was so popular she ended up with a spin-off series Private Practice. Must've been the hair!

John Sciulli, WireImage.com

Julianne Moore at the 61st Annual Cannes Film Festival
The actress and Revlon spokeswoman rocks this dramatic hair color on red carpets and commercials alike.

Mike Marsland, WireImage.com

Cynthia Nixon at an Academy of Arts & Sciences Event
You may be surprised to learn that one of Hollywood's best-known redheads is naturally blonde!

Dimitrios Kambouris, WireImage.com

Amy Adams at the 80th Annual Academy Awards in Los Angeles
Adams' red mane, styled in loose curls and parted to the side, looks classic and elegant with her jewel-toned dress.

Chris Pizzello, AP

Nicole Kidman at the New York Premiere of The Others
The very lucky Aussie vixen was not only blessed with mile-long legs, but perfect hair color as well.

Jim Spellman, WireImage.com

Kim Goes Streaking
Kim Kardashian has faked us out before, but this time it's not a wig--it's real! Kardashian debuted these J.Lo-style highlights just in time for the 2009 Teen Choice Awards in August.

Katharine McPhee's Blonde Ambition
The formerly brunette American Idol alum went platinum in August 2009 while shooting a cover for her upcoming album, "Unbroken."

Ellen Von Unweth

Britney's Back in Blonde
Just days after Lindsay Lohan scored her long blonde extensions, Britney followed suit in August 2009. Reports have even said that Lohan stopped by the Andy LeCompte Salon in LA while Brit was getting bleached. Perhaps the two stars were going for the same look?

Ice, X17online.com

Lindsay Lohan's Blonde Extensions
LiLo looked unsure of her new blonde 'do on July 29th. We have to admit, the excessive extensions and banana-yellow color don't do her justice, especially compared to her gorgeous natural hue!

X17online

Angelina Jolie on the set of Salt
Jolie makes a drastic beauty switch in her new movie role transforming from a raven-haired femme fatale to a blonde all-business woman.

Sony

Drew Barrymore, January 2009
Drew Barrymore's locks have vacillated between shades of honey, caramel, and sunny blond, but this is the first time we're seeing her with an all-out platinum 'do. Her hair looks full and funky swept up in a punky updo, which is a huge tress trend for spring.

Reese Witherspoon in Legally Blonde
Witherspoon's Elle Woods inspired blondes everywhere to follow their dreams while staying true to their gorgeous hair color.

Tracy Bennett, 12/MGM/The Kobal Collection/WireImage.com

Marilyn Monroe at her Home in 1953
Not much needs to be said about the infamous Ms Monroe, whose blonde locks and stunning beauty speak for themselves.

Alfred Eisenstaedt, Pix Inc., Time & Life Pictures / Getty Images

Pamela Anderson in Baywatch
Anderson's role as C.J. Parker on '90s hit Baywatch, landed her a place in the blond hall of fame.

Kobal, BAYWATCH CO/TOWER 12 PRODS/The Kobal Collection/WireImage.com

Nicole Richie at a 2007 Pool Party in Beverly Hills
As she grew from notorious party girl to mature new mom, Richie's ditched her ratty extensions for this gorgeous shade of blonde.

Gregg DeGuire, WireImage.com

Whether you dye your hair at home or in the salon, you probably want to spend less time (and money) doing it. We'll show you how to wait longer between highlight appointments, touch up roots at home, and even cover grays with ease. By Marissa Gold

Getty Image

Get Professional Color at Home
With so many women forgoing salon visits to color their hair at home, Fekkai probably figured--hey, if I can't beat 'em, why not join 'em?

His Salon Color system is a line of permanent home hair color complete with a professional bowl and brush, protein pre-treatment, and conditioning post-treatment. If you've been visiting the salon to go red, or to dye your natural color something darker, this kit can achieve the same results at home--and you won't have to tip anyone!

Shop Now: Fekkai Salon Color, $30

Courtesy of Frederic Fekkai

Visit the Salon Less Often
If you'd like to have more time between salon visits, it's all about minimizing those roots. "Ask your colorist to weave highlights through hair in layers, which makes them less obvious," says Sharon Dorram-Krause, Color Director for Nexxus and the Sally Hershberger Salon in NYC.

To go 2 months (or more) between appointments, "Make sure you only go 2-3 shades darker/lighter."

Courtesy of Sharon Dorram-Krause for Nexxus

Touch Up Roots
This Emergency Retouch Kit, available at Space NK starting September, is available in 9 shades of premium hair color. The formula infuses keratin protein, amino acids, and caviar essential oils to help keep hair conditioned.

Available at: SpaceNK

Courtesy of Kelly Van Gogh

Refresh Dull Color
A clear gloss is the secret to shiny, just-from-the-salon hair. Most colorists use them to seal in color and close the cuticle after color treatments, especially highlights. You can do the same at home with a product like this one from Frederic Fekkai.

Tip: Use it 2-3 weeks after salon (or home) color to keep it looking fresh and make it last longer.

Shop Now: Fekkai Salon Glaze, $28

Courtesy of Frederic Fekkai

Keep Color Bold
Many experts believe sulfates (lathering agents) in shampoo are the culprit of fading color. But Sharon Dorram-Krause, Nexxus Color Director, blames water: "Water is the main cause of color fade, even more than sun exposure, chlorine and harsh shampoos," says Dorram-Krause. 

Her salon stocks Nexxus Dualiste products, which were developped to block water from entering the hair shaft--a main cause of color fade in their tests.

Shop Now: Nexxus Dualiste, $11.99-$15.99

Courtesy of Nexxus

Protect Your Investment
This paraben, sulfate, and silicone-free line of haircare products debuted this summer at Kiehl's. Not only do these product not contain any color-stripping ingrediants, but Sunflower Seed Oil contains a natural UV-protective filter to protect hair from the sun, too.

Shop Now: Kiehl's Sunflower Color Preserving Line, $18-25

Courtesy of Kiehl's

Quick Fix for Roots
Think of this product like mascara for your hair. Keep it in your bag for those moments when roots suddenly appear, and simply brush on using the unique pen formula to cleverly conceal them. Available in colors from Beige Blonde to Jet Black, it'll dry onto hair as a quick fix and then rinse away when you shampoo.

Shop Now: Oscar Blandi Root Touch-Up Pen, $23

Courtesy of Oscar Blandi

Go Demi-Permanent
To avoid getting stuck with a new color when experimenting at home, a demi permanent is a great way for a brunette to go red or a blonde to go darker without any salon commitment. "Since it washes out in about 24 washes, the client has the flexibility to try new looks frequently," says Danny Lapointe, Artistic Director for Clairol Professional. Try that with a permanent color, and you'll be left with roots that only a colorist can usually correct.

Visit your local Sally Beauty Supply for the best selection.

Courtesy of Clairol

Get Rid of Gray
Clairol's new Advanced Gray Solution, developed for use on African American Hair, promises to cover grays without damage: "The dye molecules react with oxygen in the air instead of a developer," says Tippi Shorter, celebrity colorist for Clairol. "Because the typical developer is not involved there is no peroxide or ammonia and the color is gentle enough to use even after a relaxer." The color lasts up to 12 shampoos.

Find a Retailer: ClairolPro.com

Courtesy of Clairol

Thinking of changing your hair color this fall? Read this first. We consulted the country's top color experts to get their take on what's hot for fall. From brunettes to blondes, redheads to grays, big change or small, you'll find the best look for your hair color right here. By Marissa Gold

Courtesy of Clairol

Trends on the Runway
"I see a lot of cool grey, black, slate tones happening on the runways, which instantly puts my color palette on warm for contrast and complimentary purposes," says Naomi Knights, Colorist at ION Studio in NYC. If you're the kind of girl who likes to stand out, "go vibrant warm red," suggests Knights.

Nexxus Salon Hair Care

Color Without the Commitment
Permanent hair color is so...permanent. To try a bolder shade without as much commitment and damage, ask your colorist to use a demi-permanent color.

These dyes can add vibrant, bright tones to your hair without stripping it or permanently changing the color. Because they're ammonia-free and fade out gradually after about 24 shampoos, they're a great way to experiment.

Courtesy of Wella

Red Color Forecast
"This fall and winter, redheads will be more sophisticated and playful with deep red tones and a few cool, blonde highlights throughout to enhance the red even more," says Tracey Cunningham, Redken Creative Consultant for Color, who has worked on Lohan.

Michael Buckner, Getty Images

Keeping Your Color Bright
"Since red is the most difficult shade to keep bright, adjusting the water temperature to tepid in the shower can be very helpful as well as using gentle shampoos made specifically for color treated hair," says Eva Scrivo (shown here), Wella Spokesperson and Owner of the Eva Scrivo Salon.

Courtesy of Eva Scrivo Salon

Brunette Color Forecast
"Girls who have highlighted their hair for years are embracing their natural hair color, giving the hair a well needed break from highlights," says Scrivo.

"Going back to a beautiful light brown with just some highlights around the face allows women to get their hair back in shape and grow it longer than they could when they were regularly bleaching it."

Tip: "This must be done in a two step process by using a filler as a first layer on the hair, and the second layer is the desired shade of brown," explains Scrivo.

Courtesy of Wella

Cool Tones Rule
The big color trend this fall is cool tones. Ash browns, plum reds, sparkling blondes: "Think Fergie's shade; her lighter highlights really show through her dark, chestnut base making her haircolor look so flawless and effortless," says Tracey Cunningham.

Jon Kopaloff, FilmMagic

Blonde Color Forecast
"I think that the most natural looking blondes, no matter how light they are, want multi-dimensional color," says Scrivo.

"Colorists are strategically placing brighter pieces with hand painting techniques like balayage to not only create more impact of the all over color, but put less stress on the hair. We are more and more allowing our natural hair color to come through and be more a part of the over all result."

Courtesy of Wella

Go with a Gloss
Whether you're changing your color this fall or sticking with what nature gave you, a gloss is the perfect compliment to any hair color. "Clear glazes do a beautiful job of smoothing down the surface of the hair as well as adding shine, just like a top coat for nailpolish," says Scrivo.

If you're gray, a gloss is especially beneficial: "When the hair looses pigment, it can become wiry and course, a very different texture from the way the hair used to feel," explains Scrivo. A gloss (like Wella Touch of Gloss, an in-salon product favored by Scrivo) will seal down the cuticle to make hair smoother and shinier.

Courtesy of Wella

Courtesy of Prevention

There's nothing like a great dye job to turn back the clock. Hair color not only covers gray but also boosts volume and shine, makes fine lines less noticeable, and brightens a dull complexion. That is, unless you're still coloring the same way you did in your 30s. "What worked then might be aging you now," says celeb colorist Kim Vo of the Mirage Las Vegas. To the rescue: 3 rules for do-it-yourself dyeing that can make you look and feel a decade younger (no salon required!).

RULE NO 1: Choose an Age-Defying Shade
Extremely light or dark hair looks harsh against mature skin. For the most youthful effect, lighten hair two shades from your current natural color (for instance, from medium brown to light brown or dark blonde). "Going lighter softens your face, so fine lines and age spots are less noticeable," says Gary Howse, creative director of Seattle's Gary Manuel Salon. Besides being flattering, it also minimizes mistakes and avoids noticeable roots.

Gareth Davies, Getty Images

RULE NO. 2: Go Multi-tonal
The vibrancy of youthful hair comes from the subtle contrast of color--a mix of highlights and lowlights against your base color. "Nothing is more aging and looks more unnatural than hair that's flat and all one color," says Brad Johns, Clairol's global color director. Next are two tips to re-create this radiant effect:

Gregg DeGuire, WireImage.com

Tip 1: Use a multi-tonal dye
A tip-off that a dye delivers multi-dimensional color: The product name contains words such as shimmering, blended, or tone-on-tone. To hide a smattering of silver, choose a demi-permanent dye; if you're more than 40% gray, opt for a permanent color.

Joe Kohen, WireImage.com

Tip 2: Add highlights
Face-framing highlights make eyes look brighter and give skin a healthy glow. Perfect your technique by "sketching" your pattern beforehand with conditioner, which has a similar consistency to hair color. Face-framing highlights make eyes look brighter and give skin a healthy glow. Compensate for skin sallowness by using a warm shade--look for words such as golden, honey, or amber in the product's name. Stick with hues that are closer to your hair color; for example, brunettes use light brown, not blonde, and redheads use copper.

Jon Kopaloff, FilmMagic.com

RULE No. 3: Apply Like a Pro
For foolproof home coloring that delivers salon-worthy results, try these next three tips:

Getty Images

Tip 1: Concentrate on roots
When we're younger, our hair is naturally lightest at the ends. To re-create this effect, apply dye to your roots, but not your ends (as some kits instruct)--they soak up color the fastest because they're so porous. During the last 3 minutes of processing, splash water onto the crown of your head and then comb color through from top to bottom. "That shot of water dilutes the dye, creating a more natural-looking hue," says James Corbett, owner of James Corbett Studio in New York City. Rinse hair until water runs clear. Then apply the kit's conditioning treatment, and rinse well. Wait at least 24 hours before shampooing.

Steve Granitz, WireImage.com

Tip 2: Employ heat
Because heat opens hair's cuticle, warming an old towel in the dryer and wrapping it around your head after applying the dye allows the formula to soak into gray's more stubborn hair shaft.

Tip 3: Try a gloss
There's now a host of at-home glosses (once only available at salons), including tinted formulas that help intensify a fading shade. "They contain silicones that coat and smooth the cuticle, allowing light to reflect evenly," says Vo. Use monthly to maintain shine and vibrancy.

Getty Images

For amazing at home color, try:
Revlon Frost & Glow Highlighting Kit ($9; www.drugstore.com) for subtle or dramatic streaks with less damage.

Clairol Perfect 10 by Nice 'N Easy ($14; www.drugstore.com), delivers color in 10 minutes--reducing exposure time to harsh chemicals by 50%.

Available in six permanent shades, Garnier Color Breaks ($7.30; www.drugstore.com) can be used after coloring to add lighter or darker tones