Rid your hair of dulling product buildup by spraying a mix of half apple cider vinegar and half water all over, then rinse thoroughly. Skip it if your hair is dyed, though—vinegar can strip any artificial color.
In autumn, it's natural to get the urge to go darker. This year's inspiration? The reddish brown ponytails at Alexander Wang Fall 2013. If you have pink undertones, go with an auburn that has a golden (yellow), not copper (orange), base. "The yellow tones will balance the pink in your skin," says colorist Gina Gilbert, who has worked with Julia Roberts. Those with porcelain skin, like Julianne Moore, can handle a color with more red in it. And if your skin is olive, ask for a darker, more brownish copper.
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For poker-straight hair, like the styles seen at Reed Krakoff Fall 2013 (shown here) and DKNY Fall 2013, follow these steps:
• Start smoothing in the shower with a rich conditioner, like Biolage Advanced Keratindose. After rinsing, gently squeeze out the water and pat dry with a towel.
• Apply a conditioning heat protectant, like Tresemmé Platinum Strength Heat Protect Spray or Dove Style + Care Frizz-Free Shine Cream-Serum (for coarse or unruly hair), and get out of that steamy, frizz-inducing bathroom.
• Rough-dry your hair halfway, working in sections with a large round boar-bristle brush.
• Once it's dry, rub a few drops of argan oil serum between your hands and smooth them over your head from top to tips.
• Flatiron the hair in one-inch sections.
• Spritz a leave-in conditioner on a boar-bristle brush and run it lightly through your hair.
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Bangs for fall are blunt and below the brow, but there's no need to make the commitment just yet. "Clip-on bangs are so good these days. No one will be able to tell they're not yours," says Garren, who recommends clip-in human-hair bangs from Modu. Ask your stylist to trim them to fit your face.
Loose, barely-there waves are perfect for laid-back weekends. "It's carefree and natural," says hairstylist Paul Hanlon. Here's how to get them:
• Detangle hair in the shower when it's wet and covered with conditioner.
• Air-dry, if you have time. Otherwise, twist sections of damp hair around your fingers and blast with hot air until completely dry.
• Use a curling iron to define the waves, but remember: Perfection is not the goal.
• To finish, add a penny-size blob of glossing cream (like Bumble and Bumble Brilliantine) through the ends to break up texture, then quickly run a flatiron over the roots to smooth them down. Or, to be authentic about the model-off-duty thing, throw a beanie on your head for five minutes.
Blow out hair in three-inch-wide sections, stretching it up at the roots and then down in an arc. "Make sure you get a nice bend at the end, because that's how you get that luxurious, bouncy look," says hairstylist Guido. Using your fingers, gather hair at the nape. Secure it with an elastic and wrap a small section of hair around it, bobby-pinning it underneath. Then lightly spray all over with a shine spray, like Redken Shine Flash 02 Glistening Mist.
Part damp hair deeply on one side and brush it while following with the blow-dryer. Make a ponytail at the nape of your neck, then rub a drop of shine serum between your hands and over your head and tail.
When choosing a headband, like the one used at Nina Ricci Fall 2013, "the most important thing is to make sure the band is not too thick for your head, otherwise it will be the only thing you see," says hairstylist Serge Normant. Add a little volume at the crown, or else the band could flatten your hair and make you look like a pinhead, he adds.
5. Bangs made from real hair, like Modu's Clip-on Bangs.
6. An accessory, like the Emi-Jay headband in Black Satin, with just enough grab to keep the hair in place without giving you a migraine.
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Snow-white suits, ostrich feathers, thigh-high slits -- some of the fashion trends on fall's runways don't exactly make a seamless transition to the street. Fortunately, getting the hair is decidedly easier. Here's a primer on the season's hottest hairstyles.