Living in the heat and humidity of South Florida, Heather Frankel's fine curls often turned to frizz. One day, she saw a curly Brazilian friend, and her hair was noticeably longer and straighter.

"She told me about the treatment," Frankel says.

That would be the Brazilian Keratin Treatment -- a curl relaxer that has taken the United States by storm in recent months. Known as Brazilian Keratin Treatment, Brazilian Hair Straightening, Brazilian Blowout or just BKT, it first came to the United States a few years ago. But over the past year, a growing number of hairdressers have embraced it.

Check out our keratin treatments update!

Thermal reconditioning -- also known as Japanese straightening -- seems like yesterday's news compared to this hot import from Brazil.

Frankel, who was considering doing thermal reconditioning, is thrilled with the results. She says hair has body and shine, and only takes five minutes to style. And frizz is a thing of the past.

"It opens the door to hairstyles I've always wanted but didn't think I could have," she says. "Now you can see the layers, you can see the highlights, you can see the flips. I am so happy - you have no idea."