All kinds of cells in our body need to be renewed, and the cells of the epidermis mostly leave the body by shedding when they die. But normally you cannot see the shedding of necrotic cells of the scalp. However, when the dead cells of the dry scalp are in the form of scales or flakes and fall off automatically, this is commonly known as dandruff. Studies have found that dandruff is caused by a disruption in the ecological balance of the scalp. A healthy scalp ecosystem is maintained by three major balances: oil, flora, and metabolic balance. When the balance is disturbed, dandruff is produced. The amount of scalp oil secretion, directly affect the number and balance of scalp flora, when too much oil secretion, the scalp of the two most important bacterial groups – propionate bacillus and staphylococcus will be out of order, grease increased staphylococcus reproduced in large quantities, and propionate bacillus number declined, and the scalp moisture increased when the decline in oil is just the opposite situation. The balance of water and oil is directly related to the body’s metabolism. Therefore, excessive metabolism, secretion imbalance, dysbiosis is the main cause of dandruff. Specifically in children, often caused by the following problems: 1, improper head care, such as shampoo used to wash the hair shampoo is not clean 2, scalp oil secretion exuberant 3, head dermatitis If the baby’s head has a small amount of dandruff is normal, the baby’s sebaceous secretion is exuberant, easy to lead to the formation of sebum buildup of the scalp, if the cleaning is not timely, it will be easy to form a scale shell, that is, dandruff, but scalp for a long time to clog the pores, impeding the growth of hair, should also be noted. Hair growth should also be noted.