There are many reasons for dandruff, such as excessive sebum secretion at the scalp, which causes the shed cells to attach to the scalp together and turn into fine dandruff after drying; fungal infection of the scalp and patients with psoriasis, etc. How to reduce the production of dandruff? 1. Avoid eating fried, greasy, spicy, alcoholic and caffeinated foods, which will stimulate the formation of head oil and scalp and should be quit; 2. Wash your hair with warm water. The water is too hot will stimulate the scalp oil secretion, so that more head oil; water temperature is too cold so that the pores contraction, hair dirt can not be cleaned off, the application of about 20 ℃ warm water can be. 3, do not remember to wash your hair every day, too much hair washing will reduce the thickness of the scalp sebum, will accelerate the secretion of sebum. 4, do not use your nails to comb your hair. Should be fingertips gently massage the scalp, not only to increase blood circulation, but also to reduce the formation of the scalp. 5, morning and evening comb your hair one hundred, help improve blood circulation, reduce hair loss and can reduce dandruff. 6, can eat some food containing more zinc. Such as: brown rice, oysters, sheep, milk, eggs, etc.