Associated Press
In this Feb. 4, 2013 photo, a stylist brushes the hair of a customer at a salon in Sao Paulo, Brazil.  In 2008, L'Oreal opened a lab in Rio to focus on hair. Human hair falls into eight types depending on diameter, curliness, the number of waves, twists and other measures, and highly multiracial Brazil has all eight, unlike most countries in Europe, Asia or Africa, said Blaise Didillon, head of research and innovation for L'Oreal Brazil. (AP Photo/Andre Penner)

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