Nowadays, people pay more and more attention to appearance. A good mental outlook will not only make you more confident, but also bring others a good impression. Many people will dress up carefully when they go out, and hair dyeing is a common way of beauty in our daily life. < / P > < p > many people know that there are many chemical components in hair dyes, but most of the former hair dyes were extracted and dyed with plant pigments. Now, due to the rapid development of science and technology, many hair dyes produced by factories have chemical properties, although traditional hair dyes are not as bright and beautiful as industrial hair dyes However, the harm is relatively small. Many people think that regular hair dyeing can lead to cancer. What’s going on? Although hair dyeing can significantly improve the appearance of human body, hair dyes also contain harmful substances. Many people have different opinions on the problem of hair dyeing causing cancer. Some doctors have done corresponding investigation and Research on the problem that hair dyeing can lead to cancer. < / P > < p > through the research of doctors, it is found that the probability of diseases in the blood of the group with hair dye is about 3.8 times that of the people without hair dyeing. When the human body is dyeing hair, many harmful substances in the hair dye will penetrate the scalp tissue of the human body and enter into the blood vessels of the human body, causing discomfort of the blood vessels of the head. < / P > < p > after the human blood circulation, these harmful substances will spread to all parts of the human body, leading to the malignant transformation of hematopoietic stem cells and many blood diseases, which will cause extremely serious harm to the human body. Moreover, frequent hair dyeing will increase the risk of lymphatic cancer and breast cancer, not only for the hair dye, but also for the hair dye Barbers can also be harmful. There is a substance called phenylenediamine in hair dye. However, many countries in the world have explicitly stipulated to cancel the addition of phenylenediamine to hair dye. However, this kind of policy has not been implemented in China, although phenylenediamine can strengthen the color of hair and help to fix the color of hair. < / P > < p > but it is more likely to cause allergic reaction of head skin in our body. Once the allergic reaction occurs in the process of hair dyeing, patients will have pruritus and rash. In addition, patients with severe allergy to this substance may even cause anaphylactic shock symptoms, threatening the health of the human body, and even endangering the safety of human life. < / P > < p > the harmful substances contained in hair dyes can cause extremely serious harm to human body. Therefore, when dyeing hair, we should pay attention to the selection of hair dyes. We should not dye hair because of the desire for good color. When choosing hair dyes, we should ask the barber to choose the right hair dye. We should not blindly follow the barber’s arrangement and use those that do not Regular hair dye. < / P > < p > after choosing the right hair dye, you should pay attention to whether you have allergic reaction to hair dye. You should go to the hospital to do the relevant hair dye allergy test. If there are adverse reactions of skin at the same time of detection, you should immediately give up the use of hair dye. < / P > < p > moreover, hair dyeing can not be carried out when there is a wound on the head of the human body, so as to avoid infection of the wound, damage of skin tissue, and more serious complications, which will have adverse effects on human health. Waistcoat line type abdominal abuse posture, shaping the perfect abdominal curve!