Turn on the TV, you can often see a variety of shampoo ads, which are always “dandruff” as a selling point. Dandruff is usually manifested as “small snowflakes” that often appear on hair and clothes, often giving people an unhygienic feeling. Dandruff greatly affects personal image, and often encounters troubles when interacting with others, and even has a huge negative impact on engaging in certain jobs, such as etiquette, models, flight attendants, etc. Dandruff is a common scalp disease with a prevalence of about 50% in the population, and it is more common and severe in young people, and relatively less in children and the elderly. The exact cause of dandruff is not fully understood, and it is currently believed that its production is mainly related to the inflammatory response of the scalp caused by an infection with Malassezia, a fungus that lives on the scalp. Malassezia causes disruption of scalp barrier function and keratinocyte accumulation through a variety of pathways, resulting in dandruff that is visible to the naked eye. There are also many factors that can affect scalp function, such as certain shampooing and hair care products, excessive shampooing, sun exposure, environmental irritants, and stress or overstress that can lead to increased dandruff. To deal with dandruff, it is currently advocated to use shampoos containing various effective anti-fungal ingredients, which are simple and convenient, and have obvious curative effects. It is worth noting that flaking scalp is not necessarily dandruff, and psoriasis, seborrheic dermatitis and asbestosis of the scalp can all have symptoms of increased dandruff, and some of them are greasy and stick together into flakes and clusters, and their treatment is different from that of dandruff. Therefore, once dandruff appears, you should go to a hospital specialist in time to get a clear diagnosis and avoid delaying treatment. Stress and other factors can trigger dandruff People who have the habit of staying up late may find that their hair is particularly prone to greasy and itchy after staying up late. This is because the neurotransmitters produced by lack of sleep may stimulate the sebum to secrete more oil and nourish the growth of scalp microorganisms, leading to the production of dandruff. In addition, studies have shown that stress and emotional instability can also cause dandruff to “grow like crazy” and itchy scalp, especially psychological abnormalities caused by anxious emotions can be the root cause of lesions. Therefore, it is recommended to maintain a normal routine and adequate sleep to avoid long-term emotional tension. At the same time, it is not advisable to take in foods containing too much caffeine, sugar as well as fried, spicy and stimulating foods. Moderate supplementation of foods rich in B vitamins, eating more vegetables and fruits and adjusting one’s immunity can effectively help control dandruff. How to choose shampoo for dandruff? 1.Shampoo products containing ketoconazole and zinc pyrithione (ZPT) can effectively kill scalp fungi and play a better anti-dandruff effect; 2.Shampoo shampoos containing selenium disulfide can regulate the metabolism of the scalp in addition to the antifungal effect, thus reducing dandruff; 3.Shampoo shampoos containing pyrrolidone ethanolamine can not only inhibit scalp fungi, but also reduce the inflammatory reaction of the scalp, thus achieve the purpose of anti-dandruff; 4, there are also some shampoo products using natural raw materials such as tea tree oil and honey, and these ingredients can also achieve a certain anti-dandruff effect through a complex mechanism of action. Before buying shampoo, you should look at its active ingredients and try to use the anti-dandruff shampoo produced by large companies.