Even healthy hair is dead. It may be thick and lustrous, but it contains no living tissue. Tiny cup-shaped pits found all over the scalp, called hair follicles, produce hair.
The hair you struggle to maintain is made of dead cells that have been turned into cylinders of keratin. These cylinders form the hair shaft, which grows at about 1cm per month.
Even though it's dead, hair contains fats, pigment (melanin), water (at least 10 per cent of dry hair) and traces of vitamins and minerals. Good hair care is necessary for keeping the dead alive.
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