With enviable waves like Eva Mendes's it's no surprise she's lending her hair to Pantene's Beautiful Lengths campaign. The actress recently hosted a Twitter chat with the brand, where she answered a few of our questions, as well as shared some of her top hair and makeup tips.

When it comes to the best beauty advice she's ever received, Eva gives credit to Sophia Loren: "Beauty is 50% what you've got & 50% what people think you've got," she said. And we couldn't help but wonder if the gorgeous actress ever took bad beauty advice. It turns out, she did. She counts her beauty look from the Ghost Rider premiere among her not-so-favorite red-carpet moments.

Eva was also full of other great advice of her own. Her quick fix for a bad hair day? "Definitely throwing it up in a high bun, with a beautiful scarf as a distraction," she tweeted. And as for her day-to-day makeup look, Eva swears by light foundation with a heavy moisturizer, a natural lip balm, and a light bronzer.

Tell your tangerine (2012's Pantone color of the year) to tango right out the door, because the color experts at Pantone have just named emerald the 2013 color of the year. Described as lively, radiant, and lush, the color was seen on the runways of Stella McCartney (eyeliner), Christian Dior (eye shadow), Marimekko (eye shadow), and Kenzo (nails and eye shadow, pictured above). "Symbolically, emerald brings a sense of clarity, renewal, and rejuvenation, which is so important in today's complex world," Leatrice Eiseman, executive director of the Pantone Color Institute, said. "This powerful and appealing tone translates easily to both fashion and home interiors."

Emerald is such a versatile color because it's a new kind of neutral. It works well in both warm and cool temperatures, and pops on a variety of different skin tones and eye colors. Wear it with peach, rose, or aubergine for a complementary effect, or swipe on your nails when you need a color boost, but don't want something too overpowering. In addition, just as Sephora and Pantone linked up for 2012 with its Sephora + Pantone color collection, the beauty brands will be at it again for 2013; look for the launch of the line exclusively at Sephora this March.

Does the special guy in your life fashion himself a master groomer? Then give him the extra edge with the Gillette Fusion ProGlide Styler. The 3-in-1 facial hair styling tool trims evenly, shaves closely, and edges accurately whether he favors a simple goatee, a thin chin strap, or a clean shave. Plus, it's watertight and totally safe to use in wet environments, so he can perfect his best look, even in the shower — and easily open and rinse the trimmer door under a stream of water when he's done.

Watch the video below to take a quick look at the Gillette Fusion ProGlide Styler (which comes with its own smart organizing case). And to learn more about its great features, including ultimate maneuverability and an ergonomic handle, grip, and control, visit http://www.gillette.com/en/us/Products/Razors/proglide-styler-beard-trimmer.aspx.

'Tis the holiday season, and we're getting in the spirit with our fourth annual 18 Days of Holiday Giveaways! Every day for the first 18 days of December, one of the POPSUGAR sites will be revealing a new amazing prize. Click on the giveaways below to enter to win that site's fabulous prize, and remember to check back every day to enter to win. Good luck!

Day 1: GeekSugar — Latest Gadgets From HP	Day 2: POPSUGAR Must Have — Win a Year Subscription and Our Luxury Box	Day 3: POPSUGAR — Win a $2,500 Barneys New York Gift Card
Day 4: TrèsSugar — Win a $1,500 Victoria's Secret Gift Card	Day 5: Fashionologie — Win a $2,000 Helmut Lang Wardrobe	Day 6: FitSugar— Win a $1,500 Reebok Prize Package

It's the most wonderful time of the year — and not just because the holidays are around the corner. It's the time to whip your hair back into seriously healthy shape. "Now is when you'll start to see the damage left behind from the Summer," says celebrity stylist Mark Townsend, who has worked with stars like Natalie Portman and Mariah Carey. No matter where you spend your Winter, there is one thing you should add to your hair care regimen: deep conditioning.

"Make sure you've got a good conditioner," Townsend says. Something that's deep penetrating with lots of moisture. Yes to Carrots Pampering Conditioner ($16) is a great option, especially if you also need to clarify.

The easiest way to deep condition is to just tend to your hair first in the shower. "Wash and then leave your conditioner in while you do everything else," Townsend explains. "Rinse the conditioner out with cold water and you're set." But if you want something a little more substantial, try a hot oil mask or pick up a deep conditioner. Molton Brown Mer-rouge Deep Conditioning Mask ($40) will easily get the job done.