1. Get a haircut frequently, such as dyeing or napping, or using a hair dryer frequently;

2. Mental stress, such as work and academic stress, sorting out housework, taking care of children, and doing things that you don't want to do, these heavy pressures and anxieties will increase the secretion of oil glands and cause girls' scalp to get oily;

3. Excessive use of air conditioning. Often in air-conditioned rooms, hair loss or hair turning white is likely to occur;

4. Excessive weight loss and dieting, the main component of hair is a kind of protein called fish protein, which contains many trace elements such as zinc, iron and copper, while people who lose weight have insufficient intake of protein and their hair is malnourished;

5. Frequent use of computers will make the brain in a state of excessive excitement for a long time, which will lead to the disorder of endocrine function with the growth of hair, thus causing obstacles in the supply of nutrients to hair;

6. Eat too greasy and spicy food, eat too many birth control pills, and your hair will fall out!