50 Interesting Facts about Hair

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From the sordid history of shampoo to an insane, auction-winning bid for a lock of Elvis’s hair, we count fifty fascinating facts about hair!

 

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50It seems like it takes forever for your hair to grow back when you get a crappy haircut. Meanwhile, unwanted hair can seem like it’s growing twice as fast as usual. This is just a perceptual difference, though, as our hair consistently grows 0.44 millimetres a day.

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49Hair colour is determined by two different forms of pigment: eumelanin, which has the largest influence, and phenomelanin. Eumelanin is a black pigment, and phenomelanin is a red or yellow pigment.

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48The medical term for hair loss is Alopecia. It’s an autoimmune disorder, meaning the person’s own immune system attacks their body, forcing their hair to fall out.

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47Blonde-haired heads have more strands of hair than red- or dark-haired heads. Blondes have approximately 140,000 hairs, while their darker-haired counterparts have only 108,000.

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46Compared to other races, Asian hair grows the fastest and has the best elasticity. Despite this, Caucasians’ lighter hair tones are commonly revered in some Asian cultures.

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45Next to bone marrow, hair is the fastest growing tissue in the human body. This is why hair experts say you should get your hair trimmed at least every six weeks to maintain healthy ends.

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44The innermost layer of hair is called the medulla. Fine hair usually doesn’t have a medulla. Its purpose has not yet been determined.

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43Although a point of contention for some researchers, heat stimulates circulation and is thought to encourage hair growth. Because of this, it’s not uncommon for hair to grow quicker during warmer months.

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42Going all Prince William? Don’t reach for the toupee yet. Balding only becomes visibly noticeable once you’ve lost over 50 percent of the hairs from your scalp.

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41The word ‘shampoo’ comes from the Hindi word ‘champna’, which means ‘to knead’. The first liquid shampoo, Dop, entered the market in 1952.

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