In the Middle Ages, there was a popular saying in western Europe: people were sick mainly because of the imbalance of various elements in their bodies. As long as additional "elements" are introduced, they will be restored. Blood is considered as the most easily derived "element", so Europeans think that "bloodletting is the beginning of rehabilitation." However, the doctor thought that this was something done by inferior people, refused to bleed automatically and manually, and entrusted the barber to do it, so the barber became an amateur surgeon. 1540, with the approval of the king of England, the Federation of hairdressers and surgeons was established and a grand ceremony was held for this purpose. The king personally handed the ratification to Vickery, president of the Federation. Since then, the hairdresser has officially played the brand of surgeon and chose tricolor column as his signboard for practicing medicine and cutting hair. Red in the tricolor column represents arteries, blue represents veins, and white represents gauze. 1745, King George II ordered the establishment of the Royal College of Surgeons. The surgeon was separated from the barber shop, but the tricolor column in front of the barber shop has been used.

Barbershops all over the world think this style is beautiful and eye-catching, so they follow suit. Barbershops in China also follow this decoration as the only sign of barbershops. Because of the need to attract customers, the pillars at the entrance of the barber shop are not necessarily red, blue and white.

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The purpose of washing hair is to wash away the dirt on the scalp and hair, so that the scalp can breathe well. Therefore, to protect hair, it is necessary to wash your hair and massage it frequently, so that your hair is always in a clean state. Comb it off by combing your hair.

When shampooing, soak your hair in water first, and then use shampoo. First pour shampoo on your hair, and then rub it with your fingers like a massage. It is used to clean the scalp epidermis, because hair is easily stained by sebum and sweat on the scalp, so it should be carefully rubbed and washed. The second time I washed it with half the shampoo I used the first time. After washing, wash it repeatedly with clear water until there is no shampoo on your hair.

Try to dry your hair with a dry towel after your head, air dry naturally, and use less hair dryer; If necessary, the hot mouth of the hair dryer should not be too close to the hair. Then roll up your hair bit by bit and blow it half dry with a hair dryer, and you can make various hairstyles according to your personal hobbies.

If your hair is badly damaged due to careless ironing and dyeing, it is suggested that you apply a conditioner that can prevent split ends or add moisture and oil to the hair surface to strengthen the health of your hair.

Baidu Encyclopedia: Hair