Hair Growth

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What Does Hair Grow?

The scalp directly affects the growth of hair, so the scalp is the key to healthy hair growth. The scalp is afraid of dryness, wind, heat, direct ultraviolet rays, dirt, external chemical contact, and dust. And the scalp likes to be wet and cold, and the scalp is weakly acidic and has oil covering the epidermis. So to summarize: the growth of hair depends on the scalp, and the scalp needs a good environmental condition, and the environment is roughly divided into 3 categories~

1. The outer environment of the epidermis

The epidermal environment also refers to the scalp environment. The scalp is one of the thinnest parts of human skin, and its thickness is only 1/50 of the thickest part of human skin. It is the first barrier to isolate hair follicles from external damage.

If the shampoo is used improperly or there is shampoo residue, it will irritate the scalp, damage the hair follicles, and fail to grow hair. In addition, wearing a hat for a long time is easy to breed bacteria, or not paying attention to sunscreen on the scalp, etc., will damage the scalp and affect the growth of hair.


These 3 points are to be noted:

01. If the scalp is red and oily and is accompanied by itching and long packs, you can use medicinal shampoo or shampoo containing salicylic acid to reduce inflammation and sterilize the scalp.

02. If the scalp is more sensitive, the oil output is not much but the hair loss is large, you can buy a weak acid shampoo, which will help neutralize the alkaline residue, protect the hair follicles, and be more gentle on the scalp.

03. Change the shampoo regularly, about once a month.

2. Microcirculation environment

Long hair on the scalp depends on the microcirculation of the capillaries on the scalp to transport blood, transport away metabolic waste, and have good blood circulation, and hair is more conducive to growth.


3 steps of microcirculation:

01. Scalp massage: stretch out the five fingers of the left or right hand, gently massage the scalp with your fingers, massage in the backward direction, then massage in the left and right directions, and finally massage in a circular motion, usually 5-10 minutes, each morning and evening every day once. Over time, the effect is more significant.

02. Combing hair with horns: Combing for about 15 minutes every morning or evening can improve the blood supply of the scalp.

03. If you want to have more stable hair roots, you can take phototherapy regularly to stimulate the scalp and promote the growth of hair follicles.

3. Nutritional environment

99% of hair is made up of protein. If the hair is undernourished, then hair loss is an inevitable trend.

(1) Nutritious food

01. Vitamin B food

Mainly vitamin B2 and B6. Vitamin B2 has a very important role in controlling protein metabolism. Vitamin B6 also promotes protein synthesis and fat metabolism. These two vitamins are inextricably related to the proteins in various parts of the hair follicle. Moreover, water-soluble vitamins are easy to lack, so eating more foods rich in vitamin B group is very good for hair.


Recommended food:

Eggs, milk, beans, nuts, spinach.

02. Vitamin E food

Vitamin E is also called tocopherol. As the name suggests, it has a lot to do with the regulation of human hormones. The growth of hair, including the transmission of signals in the differentiation of hair follicle cells, most of the biological behaviors will be affected by hormones, so maintaining the balance of hormones is of great significance to the stability of the hair growth cycle. Vitamin E can play an active role in this regard.


Recommended food:

Black sesame, corn.

03. Foods rich in zinc and iron

Hainan Medical College once analyzed the levels of trace elements in 130 patients with hair loss, and the results showed that the iron and zinc of the patients were significantly lower. Both of these two kinds of trace elements are closely related to metabolism and endocrine. The more obvious effect is on hair growth and health.


Recommended food:

Oysters, salmon, spinach (high iron content).

04. Foods rich in protein

Protein is an essential component for hair synthesis. In various physiological activities of the human body, the expression priority of hair follicle-related protein is very low. This means that if the body does not consume enough protein, the hair will suffer first. Especially people who have long-term weight loss habits, or who are more resistant to meat eating, need protein supplements to promote hair growth.


Recommended food:

Chicken, nuts, black sesame seeds.

(2) Foods with special effects

In addition to regular nutrition, some foods also have some special effects, such as:

01.Black sesame

Some studies believe that black sesame extract can promote melanin production and turn gray hair into black, which is actually due to the presence of tyrosine. Many foods also contain tyrosine, but it does not prove that it can promote gray hair to turn black. (But black sesame is indeed a very good food for hair)

02. Soy milk

Soy isoflavones in soybeans belong to phytoestrogens, which can promote hair growth. It sounds right, but the actual effect is definitely not as good as the estrogen in the human body.


03. Walnut

It is said that walnuts can grow hair. In addition to the rich vitamin E content in walnuts, omega-3 fatty acids also have a good effect on hair health. They are indeed good foods for hair growth.
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