Skin barrier damage is usually due to damage to the stratum corneum, which is the first line of defense to protect the skin. Once the barrier is damaged, it can lead to dryness, flaking, itching, and redness. Sensitive skin with a damaged skin barrier needs to be repaired under the guidance of a doctor, with the use of topical barrier protectants, topical medical skincare products, red and blue light therapy, and so on. 1. Topical barrier protectants: When the barrier is damaged, the skin’s resistance to the outside world decreases. Topical skin barrier protectants can temporarily replace the skin’s barrier function, thus promoting the skin’s self-repair, thus preventing and relieving localized discomfort. Commonly used are zinc oxide ointment, vitamin E milk, etc., which can be used under the guidance of a doctor. 2. Topical medical skin care products: such as skin care products containing sodium hyaluronate and collagen ingredients. Topical medical skin care products are for sensitive skin and barrier damaged skin, less irritation to the skin, without adding any preservatives, much safer than ordinary skin care products on the market, can effectively prevent dryness, flaking, redness. Need to be used under the guidance of a doctor. 3. Red and blue light therapy: red and blue light irradiation can effectively improve the barrier damage of sensitive skin, relieve local inflammation and redness, and promote the repair of the skin barrier. Once the skin barrier is damaged, it is recommended to go to the hospital in a timely manner and follow the doctor’s instructions to avoid the adverse consequences of sensitive skin. At the same time, we should pay attention to a light diet, do not eat spicy stimulating food, to maintain a good state of mind, more exercise, is conducive to the protection of the skin.