About the hair growth cycle

Time:2021-02-06 Views:2072

Fast-paced lifestyles have become the norm for modern people, especially young people in first- and second-tier cities. While life is under pressure, their work and rest schedules are irregular. The age of hair loss in the past is generally after 50, and now some are around 17. I started to notice that there was a hair loss problem, and some people would inevitably panic when they noticed it. In fact, the human body has metabolism, and hair is no exception. It is divided into growth phase, strong phase, degeneration phase, and resting phase. In these different cycles, the condition of the hair is also different, and it may be different from the hair. The stage. In other words, some hairs are in the growth phase, and some are in the degenerative and resting phase. What is the general time?

1. The initial growth period: The average time is about one year, accounting for about 10% of all hair. The hair is in the early stage of budding, relatively delicate and not easy to fall off, but it takes time and nutrient supply to grow.

2. Strong period: about 2-6 years on average, accounting for about 80% of all hair. Most of our hair is in a state of continuous growth. Hair in this period is difficult to fall off and is relatively strong. If it is pulled hard, the scalp will feel painful.

3. Degenerative period: an average of about 1 to 4 weeks, accounting for less than 5% of all hair. The growth rate slows down and the hair roots will move toward the skin surface, but the hair is still not easy to fall off, and some of it is yellowish.

4. Resting period: the average is about 5-6 weeks, accounting for less than 5% of all hair. At this time, the hair has completely stopped growing, the root position is very shallow, and the hair is easy to fall off, especially when washing and combing. Easy to fall off.

Generally, there are about 100,000 to 200,000 hairs on the head of a person, and about 10,000 hairs are in the resting stage, which is easy to fall off. Therefore, it is normal for an adult to lose about 50-100 hairs a day.