There is no unified standard for the dosage of Chuan Bai Anti-Itch lotion at one time, and the dosage for topical application should be determined according to the actual situation and specific symptoms of the patient. Chuan Bai anti-itch lotion is a proprietary Chinese medicine, not a hormonal drug, and because it is relatively viscous, it is best to dilute the drug in the process of topical application, you can add 3-4 times of warm water to dilute the lotion and apply it locally to the affected area with warm water. If the vulva itching or skin local itching symptoms are very intense, you can directly apply Chuan Bai anti-itch lotion, should be based on the area of itching and the severity of the symptoms to determine the amount of application, generally not too much, and in general a day can be used externally up to two times, and at the same time after a use, about 3-5 minutes should be rinsed off with water.