What is the growth rate of hair? 10

The growth rate of hair varies from person to person, and the growth rate varies from season to season. In general, healthy adults who do not suffer from various hair loss diseases have hair growth of millimeters per day, about 1 cm a month. Hair grows a little faster in the summer than in the winter.

During the normal growth life cycle of hair, all hair follicles are renewed at different rates, and hair growth is a continuous process that can be divided into three distinct stages.

Agen: Hair grows continuously for 2 to 4 years, growing about 1 cm per month on average. The longest anagen phase of hair can be up to 25 years, so you can see a beautiful woman with hair up to 2 meters in length in the Guinness Book of World Records.

Catagen: Lasts 2 to 4 weeks.

Telogen phase: lasts about 2 to 4 months, late in the telogen phase, the hair will fall out and new hair will begin to grow in the area that has fallen out. Repeat a new growth cycle.

During the normal growth life cycle of hair, all hair follicles are renewed at different rates, and hair growth is a continuous process that can be divided into three distinct stages.

Agen: Hair grows continuously for 2 to 4 years, growing about 1 cm per month on average. The longest anagen phase of hair can be up to 25 years, so you can see a beautiful woman with hair up to 2 meters in length in the Guinness Book of World Records.

Catagen: Lasts 2 to 4 weeks.

Telogen phase: lasts about 2 to 4 months, late in the telogen phase, the hair will fall out and new hair will begin to grow in the area that has fallen out. Repeat a new growth cycle.

It's growing a little fast.

That's a centimeter in a week.

And how did you measure that number?

It's too fast, it's only three or four centimeters a month.

The growth rate of hair is millimeters per day. There are generally 120-240 hairs per square centimeter, and the average for the whole head is 100,000. The diameter of the hair is millimeters.

After the process of growth, catagen, telogen and hair loss, the hair will naturally fall out and new hair will grow.

In the case of hair, the growth phase is 2-5 years, the catagen phase is 2-3 weeks, and the telogen phase is 3-4 months, after which it falls out. Healthy people lose 50-80 hairs a day. The hair in the growth stage can withstand the pull of the cow, and it will not fall out when washing the hair.

Once in the telogen phase, it will fall off with a gentle pull.