Hair is a protein filament that grows from dermal follicles. It is one of the distinguishing features of mammal species. Apart from areas of glabrous skin, the human body is covered in follicles that produce thick terminal and fine vellus hair. Hair is an important biomaterial primarily composed of protein, mainly alpha-keratin.
- The hairs grow at the fastest pace during the day in the summer season and grow the least slowly in the night of winters.
- The people who are really intelligent contain have larger quantities of minerals like copper and zinc in their hair compared to less clever people.
- Dandruff is made up of clumps of dead skin cells which are mixed with scalp oil and dirt. We lose millions of these skin cells each day.
- It’s a myth that stress can turn hair grey as it is not scientifically proven. In real, telogen effluvium (hair loss) can start up to three months after a stressful event.
- Our hair is made up of a body protein called keratin, and it grows out of an opening of the skin called a follicle.
- Hairs can grow anywhere in our body except the palm of the hands, lips, soles of feet, eyelids, and mucous membrane.
- Black is the most common hair color. Whereas red hair is the most uncommon hair type, and only 1% of people in the world possess red hair.
- The fastest-growing tissue in our body is the bone marrow. The second fastest-growing tissue is the hair.
- An average scalp of a human being has 100000 hairs and the same number of follicles. Each follicle is capable of producing 20 individual hairs during a person’s lifetime.
- The hairs of males are denser and grow faster than females.
- A hair in our scalp grows at a rate of 0.3 to 0.5 mm per day, 1 to 1.5 cm per month, and 12 to 15 cm per year.
- Blondes (people with yellow or fair hairs) have more hair than dark-haired people.
- The life span of human hairs is two to seven years.
- On average, people with black hair have about 110,000 hairs. In comparison, redheads have about 90,000 hairs.
- We, Humans, have about the same number of hair follicles compared to that of a chimpanzee.
- The hair of healthy human beings can emit sound.
- The pigment of our hair is produced in the shaft of hair underneath our skin.
- About 35 meters of the hair fiber is produced on the scalp of an adult every day.
- Men who do not have hair on their chests are more likely to get cirrhosis of the liver than men with hairs on the chest.
- On average, the maximum length of hair can be 70 to 90 cms.
- 50-100 hairs are likely to fall every day.
- Our eyebrow hairs last between 3-5 months and then sheds.
- A person that is on a crash diet tends to lose hair at a faster pace.
- Hair is made from the same substance as fingernails which are keratin.
- In an average adult, there are over 5 million hair follicles.
- Hair is comprised of 51% carbon, Oxygen 21%, Nitrogen 17%, Hydrogen 6%, and 5% sulphur.
- On average, the life span of a hair strand is about five and a half years.
- A single hair can bear 100 grams of weight. At the same time, whole hairs can bear a staggering weight of up to 12 tonnes.
- Our nose hair will grow six feet in a lifetime.
- Brylcreem was created in 1929 and was the first product for man’s hair.
- Our color of hair is determined because of a pigment known as melanin.
- Many people who have cancer go through a treatment known as chemotherapy because people lose their hair. For some people, when the hair grows back, it can grow in different colors and can come as straight or curly.
- Straight hair lies flat because it is round and grows out of round follicles.
- On average, it takes about 13 days for grey hair to grow.
- It’s a myth that frequent washing of hair causes hair loss.
- Bears or facial hairs grow at the fastest pace in the human body. If the average man never trims his beard, it would grow to nearly 30 feet long in his lifetime.
- Goosebumps on our skin are caused by the pull of muscles that are attached to the hair follicles and make the hair upright.
- Our hair gets grey in color as our age increases because the pigment cells in the hair follicle start to die, which is responsible for producing “melanin,” which gives the hair its color.
- When the baby is in the womb, the body of the baby is covered with a thin layer of hair, but as soon the baby is born, it gets disappears.
References
- Wikipedia-Hair
- Britannica-Hair Anatomy
- Designessentials(hair composition)