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Nicole Richie swears by them. Ashley Tisdale's a fan, and Lindsay Lohan's been known to rely on them as well.

So what exactly is a Brazilian Blowout?

According to a lead stylist at the Andy LeCompte Salon, the Brazilian Blowout differs from Japanese straightening and other Brazilian straighteners because it doesn't completely straighten the hair. The hair still has plenty of volume and body and can still be worn curly or wavy. It just softens whatever curl or wave you have. If the hair is air-dried without a blow dryer, it will still have wave or curl but no frizz. On the flip side, if you want to blow dry your hair straight, you can do that, without a brush, in a fraction of the amount of time it would have taken without the Brazilian. Also, with other methods, there is a line of demarcation, meaning that when new hair grows in, it is curly/ wavy while the rest of the hair is straight. This blowout method washes away with time and is diffused, so there is no noticeable difference between new hair and treated hair. Other methods also have harsh chemicals in them like formaldehyde. The Brazilian Blowout does not have formaldehyde in it. And none of the chemicals in it are carcinogenic. It's also safe for all hair types, including fine, brittle, and damaged.

Treatments take 1 to 1 1/2 hours to complete, and start at $350. To find a salon near you that offers Brazilian Blowouts, click here.