Japanese hair grows 0.3 to 0.4 mm per day by standard, which means that on average, hair grows 1 mm in 3 days, 1 cm in 1 month, and 12 cm in 1 year. If you want to grow short hair down to your waist, it will take 4 to 5 years. You may be thinking, “My hair will grow faster than that. If you think, “My hair might grow faster than that,” then your hair is probably growing fast. Women’s hair grows faster than men’s due to the influence of female hormones.
How does hair grow?
The surface of the skin has dead skin cells. As women are well aware, if this remains on the surface of the skin indefinitely, the skin may look dull and makeup may not apply properly. The cycle in which old keratin is replaced by new cells is called “turnover,” and each cycle takes about 28 days. This number of days increases with age. Since hair is also a part of the skin, the speed of hair growth slows down with age. By the way, one thing that determines the speed of hair growth is growth factor. This is a small protein secreted by cells. However, it is not yet clear which growth factors affect the speed.
How far will my hair grow?
How far will hair grow if it is left to grow? The growth phase of the hair cycle is about seven years at the most, so even if you leave your hair long, it will grow to about 90 cm. However, according to the Guinness Book of Records, the person with the longest hair in the world is from Thailand, and it is 515 cm long. It takes about 40 years for a person’s hair to exceed 5 meters, so this person is a superhuman whose hair grows very fast and whose growth period lasted for a long time.