Aim for just shy of dripping: "The more your curls or waves dry on their own, the harder it will be to get them straight," says Rachael Coppola. Use a heat-protecting product; try L'Oréal Paris Advanced Haircare Smooth Intense Xtreme Straight Crème ($7; at mass retailers).
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2. Dry it 100 percent
"Most women stop at 90 percent, but it's that last three-minute push to total dryness that makes a blowout frizz-resistant," reveals Nathaniel Hawkins, a New York City hairstylist.
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3. Work in sections
It's easier to get hair straight if you tackle it in 2-inch chunks. (Keep wet strands out of the way with hair clips; in a pinch, use a chip clip.)
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4. Embrace the nozzle
That attachment that came with your blow-dryer focuses airflow so hair dries faster, leading to less damageand hair that stays silky longer.
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5. Perk it up in no time
If you used a styler with silicone, applying more the next day can make hair look greasy. Instead, just quickly blast with a dryer to reactivate the product.