When the stratum corneum is damaged, it usually recovers on its own after a period of care, and is not never self-healing. The stratum corneum can be damaged, often due to the usual exfoliation too often or prolonged use of cosmetics and drugs containing hormones, etc., resulting in thinning of the stratum corneum and expansion of capillaries, resulting in skin flushing, heat, itching, dryness, peeling and other manifestations. If you want the damaged stratum corneum to return to normal, you need to stop using hormone-containing drugs or cosmetics. When cleansing the facial skin, it is advisable to use a mild cleanser and pay attention to the hydration of the facial skin to keep it moist. When you go out, you need to carry out the necessary sun protection, such as wearing sun hat, sunshade, etc., to prevent ultraviolet radiation from causing skin irritation. In normal life, supplement more collagen-rich foods, such as pig’s feet, soybeans, etc. Avoid spicy and stimulating foods, smoking and alcohol. Through a period of recovery, the damaged stratum corneum can basically be improved. In order to prevent damage to the stratum corneum, you should pay extra attention to skin care in your daily life, avoid excessive cleaning of the facial skin, and choose cosmetics that are suitable for you.