Hello, is it raining frequently in your environment recently? Is the environment you live in humid, unventilated, sunny and airtight? When do you usually wash your hair? Did you blow-dry your hair immediately or let it dry by itself after washing it? Are you in good health? (e.g. greasy stool, cold fear, less menstruation, cold hands and feet, oily skin, easy asthma, fatigue, dry mouth, heavy breath, etc.) Shampoo water temperature, when you use conditioner, is it applied at the hair tip or at the hair root? Whether to keep long nails, whether to grasp the scalp with your nails when shampooing, whether to use flowing water or basin water for shampooing, whether to wash and expose your hair frequently with pillowcases and towels, it is recommended that you carefully look at the above problems first, and make corresponding adjustments according to these conditions.