Damaged scalp barrier may be related to scalp skin sensitivity, seborrheic dermatitis, etc. It needs to be repaired with the help of daily care and medication. 1. Daily care: During the period of scalp barrier damage, avoid the use of irritating shampoo, avoid the use of hot water with too high a temperature when washing hair, and avoid excessive scratching of the scalp. If the hair is short, or bald, usually pay attention to sunscreen, to avoid ultraviolet radiation stimulation caused by the scalp area of the skin again damaged. 2. medication: if the scalp barrier is damaged more seriously, there have been scalp breakouts, dandruff and cracking, etc., you can apply local epidermal growth factor gel and other medication. If infection occurs, you can also apply fusidic acid cream and other drugs to control the infection. It is recommended that patients with impaired scalp barrier should consult a doctor in time and strictly follow the doctor’s instructions, do not blindly treat themselves to avoid adverse reactions.