10 interesting facts about hair

10 faits intéressants sur les cheveux

1 – Your hair is dead! The hair is divided into two parts: the root, the living part which is located inside the scalp and the visible shaft, which is biologically dead.

2 - A person has on average 100,000 to 150,000 hairs.

3- The speed of hair growth varies depending on several factors, including seasons and age. Overall, the average is 1 to 1.5 cm per month.

4 - A hair is mainly made of keratin, the same protein that makes up horns, nails, feathers or beaks.

5 - A person loses between 30 and 60 hairs on average per day.

6 – Black is the most common hair color. Red hair is the rarest and affects only 1% of the world's population.

7 - All your past is preserved in one hair! Hair is one of the most reliable types of forensic evidence since it contains information about anything that has been in your bloodstream, including drugs and medications.

8 - The scientific name for split ends is trichoptilosis.

9 - A hair has an average lifespan of 5 years.

10 - The density on your head per square centimeter is 150 to 200 hairs.

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