Alexandra Owens, Allure magazine

The field of science is catching on to what the fashion world has known for quite some time now: The ideal brow has gone from thin and arched (circa 1990) to straight and full (circa practically every runway show at recent Fashion Weeks).

See more: Top 21 Drugstore Beauty Bargains

But hey, it's nice to have some empirical evidence, courtesy of a new study published in Clinical Plastic Surgery. "I blame Pamela Anderson for the thin brow everyone had in the '90s," says Kristie Streicher, a brow groomer at Streicher Beauty Bar at Warren Tricomi in Los Angeles and New York City. Yes, they were striking in their own right. But full brows without an arch make a stronger, and arguably cooler, kind of androgynous statement. "You need a naturally full, long brow to pull off the look," says Streicher, adding that straight-across brows are especially flattering to almond-shaped eyes. (They won't work as well on round or deep-set eyes.)

See more: The 6 Most

Courtesy of Getty ImagesCatherine Q. O'Neill, Allure magazine

With the exception of the Dallas Cowboy cheerleaders, Fox Sports broadcaster Erin Andrews might be the hottest woman to ever stand on the sidelines of a football game. We asked for her game day beauty tricks.

How do you stay so fresh and polished on the field? I feel like I never see you sweat.
Oh, then you're not looking hard enough because I'm a sweater. That's one of the reasons I'm stoked about teaming up with Degree for Women and this new antiperspirant they have with clinical protection. I do sweat and I do get nervous. There are times when I'll even have a sweat-stache on air.

See more: The 6 Most Flattering Haircuts for Round Faces

Do you ever do anything unconventional with your deodorant?
Oh yeah, I've used it on my chest, hands, and my feet with ballroom dancing. This is very attractive-I was sweating so much on Dancing with the Stars that my feet were sliding out of my shoes. So we had to dirty them up a little

By Stylist Anastasia Nam for GalTime.com

What's really behind the reason for your hair loss?We women do some crazy things to our hair in the name of beauty. We cut it short, then let it grow long...only to complain and chop it off again! We highlight, dip-dye, and chemically straighten our strands. We pull our locks into trendy braids and ponytails, and weave, glue, or clip on extensions for length and volume.

If we're lucky, the damage isn't long-term: some split ends here, some singed strands there, and maybe even a cringe-worthy haircut. But for a growing number of women, those too-tight braids and heavy extensions are leading to actual hair loss. It's a condition known as Traction Alopecia, and the main culprit is stress, or "pulling", on the hair follicle.

Related: Hair Sins You May Be Committing

Long-term, that stress can cause permanent damage, meaning your hair won't grow back. The good news? If diagnosed early, Traction Alopecia is reversible. Here are some ways to repair your hair and prevent additional

Remember when perfume just, you know, smelled nice? Nowadays fragrances are like those overachiever kids in science camp -- weight-loss perfume comes to mind. (Though I'm still itching to see if it actually works.)

Then Lady Gaga started the color insanity -- her black liquid scent actually mists on clear. And British design duo Boudicca are taking it one step further. Their scent Wode sprays in a vibrant, freaky cobalt blue; it fades to clear when it dries.

The scent is warm notes of juniper, berry, and nutmeg absolute. Not that it matters. With a gimmick like this, most of us will forget to smell it. Their shocking ad campaign (see the photo) is scary and grabby too.

Related: The Best Fall 2012 Fragrances

The secret ingredient that allows the color to dissipate is a plant extract called Woad that converts color when exposed to air.

Related: 7 New Ways To Wear A Perfume

Although the scent has been out in the UK for a while, it is now

Summer has come and gone, as have all those neon nail lacquers. Now we're switching up our manis with these fall nail trends - some obvious, like deep reds, and others not so much, like pearly white. (We've always thought wearing white after Labor Day was a fashion faux-pas that just had to be broken.)

Related Slideshow: Sneak Peek: MAC Marilyn Monroe Collection

jeweltones

Rich jewel tones were all over the fall runways, such as at Karen Walker's show where models nails were polished with CND Midnight Sapphire ($9, Cnd.com). Other jewel tones we're loving: Estée Lauder Black Turquoise ($20, Saksfifthavenue.com), MAC Gadabout Girl ($16, Maccosmetics.com), and Essie Stylenomics ($8, Essie.com).

simpler

Although light lacquers are typically associated with spring, pale nudes and even white are getting some play this fall. Use these simple, chic colors to accompany fall's bolder trends, such as a dark lip or cat-eye. Shades we recommend: OPI My Boyfriend Scales Walls ($7.25, opi.com

The first place to show our age (and late nights) is our eyes. We consulted with some of New York's top makeup artists to find out their secrets to covering up those circles of doom. Read on for their top techniques that will give you a super fresh and rested look. Really!

ALSO ON ELLE.COM:

• Diets Based on Your DNA?

• Up Close and Personal with the Victoria's Secret Angels

• The Best Nail Polish Colors for Your Skin Tone

Designers at New York Fashion Week definitely send some crazy beauty looks down the runway. Check out our fave super strange hair and makeup styles.

• 50+ Celebrity PDA Moments

• 33 Gorgeous Short Haircuts

• 101 Easy Ways to Start Losing Weight

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Reprinted with permission of Hearst Communications, Inc.

Photo: Marko Metzinger/Studio DFrom left

Lady Gaga
Fame Ultimate Masterpiece
A surprisingly sweet and feminine combination of belladonna, apricot nectar, tiger orchid, and jasmine. ($79 for 3.4 ounces; Macys.com)

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Lancôme
La Vie Est Belle
Iris, sweet praline, jasmine, and orange blossom in a delicate, sophisticated floral scent. ($75 for 1.7 ounces; Lancome-USA.com)

Tom Ford
Jonquille de Nuit
Lush and slightly spicy: peppery angelica seeds, violet leaf, narcissus, and warm amber. ($205 for 50 milliliters; Saks.com)

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Givenchy
Eaudemoiselle Body Mist
A skin-softening mist (a mix of glycerin and rose extract) with floral notes of orange blossom and ylang-ylang. ($46 for 3.4 ounces; NeimanMarcus.com)

Donna Karan
Woman
The rich, woody, and warm scents of sandalwood, vetiver, and orange flower. ($115 for 3.4 ounces; Nordstrom.com)

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Halle Berry
Closer
A fresh and powdery floral