1. Hair is made of Keratin, the same substance that forms nails and the barrier at the top of the skin.
2. Hair grows faster in the summer than the winter, and faster by day than by night.
3. Cutting hair can help your hair grow longer than it could before, but it doesn't make it grow faster
4. Scalp does regenerate, the cycle of hair growth happens every 28 days.
5. Normally, due to higher levels of female hormones, Estrogen, the growth cycle of hair is slower in women than in men.
6. Pulling out one gray hair does not cause seven to grow back.
7. Your chance of going gray increases 10-20% every decade after 30 years.
8. Hair is as strong as aluminum, can hold 1/3 its own weight in absorbed moisture, and can be stretched to 1 1/2 times its length when it's wet.
9. The word "shampoo" dates back to 1762 meaning "to massage".
10. Your hair knows more about you than your mother! A single strand of hair can determined if you smoke, drink or take drugs. It can also tell your ethnic origin. Although hair can’t be used to identify gender, it is true that intelligent people have more zinc and copper in their hair.
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