20 amazing facts about human hair

Fact 1: Human hair is made up of a protein called keratin, the same protein found in animals' hooves, claws, and feathers.

Fact 2: On average, a person has about 100,000 to 150,000 hair follicles on their scalp.

Fact 3: Hair growth rate varies, but on average, hair grows about half an inch (1.25 cm) per month.

Fact 4: Blond hair is the result of low levels of brown eumelanin, while red hair is caused by high levels of pheomelanin.

Fact 5: Each hair strand goes through a cycle of growth, rest, and shedding. The entire human scalp experiences this cycle independently.

Fact 6: Hair is a great absorber of oil. This is why unwashed hair can start to look greasy.

Fact 7: The average lifespan of a single hair strand is about 2 to 7 years.

Fact 8: Hair color is not determined by the actual color of the hair but by the presence and ratio of different pigments.

Fact 9: Hair is an excellent insulator, providing protection from the sun's harmful UV rays and helping to regulate body temperature.

Fact 10: The scientific term for hair loss is "alopecia."

Fact 11: People with black hair tend to have more hair strands than those with blond hair.

Fact 12: A single strand of hair can support up to 100 grams in weight.

Fact 13: Hair is one of the fastest-growing tissues in the human body.

Fact 14: Hair follicles are formed during fetal development, and the number of follicles is set before birth.

Fact 15: Cutting or shaving your hair does not affect its growth rate or thickness.

Fact 16: Hair is composed of three layers: the cuticle, cortex, and medulla.

Fact 17: Each hair follicle has its own blood supply, and the health of the hair depends on the nutrients it receives.

Fact 18: Hair can be stretched up to 30% of its length when wet.

Fact 19: The average person loses about 50 to 100 hairs per day.

Fact 20: Hair is a valuable forensic tool as it can provide information about a person's lifestyle, diet, and environmental exposures.