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How can I dye my hair black?
Black hair small folk prescription:

1, black sesame

Beat black sesame into paste, drink one cup every morning and evening, and stick to it for a week to see the improvement effect. This is because black sesame has a magical promoting effect on the growth of human skin and hair. Eating black sesame seeds regularly can not only make hair soft, shiny and full, but also make skin moist, firm and translucent.

2. Black beans

Black beans are the best ingredients for tonifying kidney. Kidney deficiency can cause qi and blood imbalance, physical weakness, manifested as alopecia and dry hair. It is suggested that friends polish black soybean milk with a soymilk machine every day in daily life, so as to provide high-quality protein for hair growth and repair while tonifying kidney.

3. Walnut

Walnut is rich in linoleic acid, which is a healthy and educational food. Eating a few walnuts every day can make your hair black and bright, and your brain flexible and witty. It's a health product.

Mainly walnuts and black sesame seeds, if eaten for a long time, it is better for hair. I have drunk the dimples made by Polygonum multiflorum Thunb. I often hear that Polygonum multiflorum Thunb and Gleditsia sinensis Thunb are better. But there are fewer opportunities to use it. Walnut sesame seeds are more realistic. ? Besides eating something to make up for it, washing your hair is very important. ? You usually have to wash it twice. The first time is to apply shampoo to the hair roots and massage the scalp as much as possible. The best time is 10 minutes. If you feel impatient, 2 or 3 minutes is still necessary. The second time, apply shampoo to your hair and gently rub it. Rinse with clean water. Then touch the conditioner, not too much near the scalp. After all, it is the hair that moistens, not the scalp.

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Wait a few minutes, then you can do something else. Finally, rinse with clean water. Don't rub your hair hard after washing it. You should use a towel to absorb water. Personally, I advocate blow drying all my hair. If you don't feel well, at least your scalp should be dried. ?

Extended data:

Hair refers to the hair that grows on the head. Hair is not an organ, so it does not contain nerves and blood vessels, but cells. Hair is mainly used to protect the head besides enhancing the aesthetic feeling. Soft and fluffy hair is elastic, which can resist light collision and help head sweat evaporate. The average person's hair is about 654.38+ ten thousand. Of all the hairs, the length of hair is the longest, especially for women with long hair. Some can grow to 90 ~ 100 cm, or even 150cm, but generally it will not exceed 200cm.

Hair color is generally determined by genes, such as black, golden yellow, brown and red. When people get old, their hair usually turns silvery white. Due to different races and regions, hair is black, golden, reddish brown, reddish brown, yellow, gray, and even green and red. You can also dye your hair in various colors by dyeing it. Scientific research has proved that the color of hair is related to the difference of metal elements contained in hair. Black hair contains equal amounts of copper, iron and melanin. When the content of nickel increases, it will turn gray. Blonde hair contains titanium, reddish-brown hair contains molybdenum, reddish-brown hair contains cobalt besides copper and iron, and green hair contains too much copper. In some African countries, some children have red hair, which is caused by the serious shortage of protein.

? References:

Baidu encyclopedia-hair