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Photo by: Felipe Dana

FILE - This Feb. 3, 2011 file photo shows Adriana Guedes as she has her hair straightened by hair dresser Tania Machado at a salon in Ipanema, Rio de Janeiro, Brazil. The Brazilian Blowout surfaced around 2005 in Brazil, where a combination of high humidity and a largely mixed-race, curly haired population made for a nation of eager customers. It soon spread throughout North America and Europe. (AP Photo/Felipe Dana, File)

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