Shampoos mainly contain ingredients such as primary surface activators, secondary surface activators, thickeners, and silicone oil additives. The silicone oil additives in shampoos, namely polydimethylsiloxane, may cause sebaceous alopecia in some people, but the effect is small. In addition, silicone-containing substances in shampoos are usually very small particles, and after rinsing shampoos containing silicone-containing substances with water, there is basically no residue, so the effect on hair loss is minimal. Some people have dry hair, the amount of oil secretion is not enough to protect the scalp and hair, when the application of shampoo containing silicone oil ingredients, can form a protective film between the scalp and hair, instead of their own secretion of insufficient oil, to a certain extent to prevent hair loss phenomenon. However, it cannot be ruled out that a very small number of people may be sensitive to silicone oil, resulting in inflammation of the scalp and thus hair loss. Compared to the effect of shampoo on hair loss, frequent shampooing is more likely to lead to hair loss. The protective oil of the hair is washed away, and the evaporation of water from the hair without the oil protection may generate static electricity or become swollen, which tends to accelerate the damage to the hair scales and may lead to seborrheic hair loss. Shampoo has minimal effect on human hair loss, resulting in hair loss usually due to endocrine disorders, high mental stress and other factors. Therefore, it is recommended to seek medical attention and targeted treatment when hair loss occurs. In addition, when washing hair, pay attention to clean the scalp, try not to use the same shampoo for a long time, do not blindly believe in “silicone oil-free” and other propaganda, choose the shampoo is the most important for you. Daily life should pay attention to the regularity of personal work and rest, try to avoid staying up late, maintain good habits, maintain a healthy and reasonable diet, pay attention to hair cleaning and care, avoid excessive hair coloring, perming and other acts that damage the hair, can avoid hair loss.