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Hair expert reveals what ruins your hair

Grace Raver
2016-04-29T15:18:13Z
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Kurt Stenn has studied hair for 30 years and lectured extensively on the biology of the hair follicle. In his recent book "Hair: A Human History," he dives into the biology, evolution, and cultural history of the subject. 

We asked him what are the most important ingredients to get healthy beautiful hair. 

Produced by Grace Raver. Camera by Darren Weaver.

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