Li Bojian, a professor of dermatology at Guang 'anmen Hospital of Chinese Academy of Traditional Chinese Medicine, said in an interview with Global Times that regular hair trimming can stimulate the metabolism of hair cells and promote hair growth, thus keeping hair healthy and bright.

Moreover, regular hair trimming can also avoid hair tip bifurcation and ensure the sustainable growth of hair. Short hair is usually trimmed once a month; For people with long hair, the longest interval between haircuts should not exceed 3 months.

"Global Times" reminds everyone that not having a haircut for a long time will not only affect the personal image like a "weed", but also affect the breathing and metabolism of the head skin, increase the oil output of the scalp, cause sebum metabolism disorder, and then block pores and cause certain diseases.

In addition to regular hair trimming, if you want to have long black hair, you need to pay attention to the following two points in your daily life:

1. According to the Health Times, you should eat more black rice, black beans and sesame seeds at ordinary times, because these foods can provide nutrition and keep your hair black and bright.

2. In an interview with Yangzi Evening News, Dong Zhengbang, the attending physician of dermatology in Zhong Da Hospital affiliated to Southeast University, reminded everyone that when you blow your hair with a hair dryer, you can naturally dry it when it is 80% dry.

Moreover, the temperature of the hair dryer should not be too high, and it should not be blown for too long, otherwise the hair will be chapped.

Extended data:

Ensure sleep and nutrition, and your hair will be thicker.

In life, many people are worried about losing their hair. Is it a lack of nutrition? What causes hair loss?

In fact, just as leaves will fall off when they grow to a certain extent, hair will fall off when they grow to a certain stage, which is a normal phenomenon. We lose 50 ~ 100 hairs every day, so don't panic if we lose a few hairs.

However, if you feel that your hair is falling much more than before, you should pay attention. This is to remind you that your health has declined.

For most people, lack of sleep is an important cause of hair loss. Grow a bright black hair, and a good sleep is the foundation.

Nowadays, many people, especially some white-collar workers, often stay up late, work late, play games and play mobile phones. These bad habits are very bad for the health of hair.

Therefore, if you really find yourself losing a lot of hair recently, you should first consider whether you are too tired and lack of sleep recently. If so, you need to adjust your sleep and mentality to relax yourself.

In addition to the above factors, malnutrition can also lead to hair loss.

The essence of hair is keratin, which is a kind of protein. The formation of hair melanin requires an amino acid called tyrosine as a raw material.

Therefore, in the case of obvious shortage of protein, hair not only grows slowly, but also easily falls off, becomes thinner, becomes brittle, dries up and becomes lighter in color. Therefore, it is necessary to ensure adequate intake of high-quality protein in daily diet.

The staple food we usually eat contains 7% ~ 12% protein. It is generally recommended to eat 200 ~ 400 grams of staple food every day. If you don't eat staple food, protein's intake will be much less, and the starch in staple food can also "save" protein.

Without enough starch intake, even if protein ate it, most of it would be directly decomposed into heat, which could not be used for hair synthesis and growth.

People's Network-Regular haircuts are more conducive to "long hair and waist". The interval between haircuts should not exceed 3 months.

People's Network-Ensure sleep and nutrition to make hair thicker.