Ketoconazole lotion is usually used 1~2 times a week, due to their actual condition and different types of diseases, the frequency of use will vary, it is recommended to choose reasonably under the guidance of a doctor. Ketoconazole lotion is clinically used for the treatment of dandruff, itching and scaly scalp diseases, usually blue, blue-green viscous liquid. During the treatment of dandruff, the intervention is usually carried out in the form of 1 to 2 times per week for 2 to 4 weeks of use, and the frequency needs to be adjusted at a later stage according to the effectiveness of the treatment as well as the doctor’s recommendations. Ketoconazole lotion may cause local irritation or allergic symptoms in a small number of people, it is recommended to stop using it in time, and after examination by a doctor, to determine whether it is necessary to change the drug treatment. The same disease, the patient’s physical condition is different and at different stages of the disease, the treatment will be different, should be standardized under the guidance of the doctor treatment.