The hair shaft has three layers. The outermost one, the cuticle, is a sleeve of overlapping keratin scales that protects the cortex underneath. When those scales erode at the tip, from friction, heat, ...
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I’m tired of dealing with split ends—so I asked the experts how to treat, trim and prevent them
Split ends: nobody wants them, yet somehow we all get them. So, what actually causes them? How can we prevent them? And crucially, can they even be treated? As a beauty writer, talking about how to ...
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