Dry and sensitive skin can be caused by factors such as decreased immunity, UV exposure, atopic dermatitis, and the use of poor quality cosmetics. It can be repaired by using vitamin drugs, moisturizing drugs, antihistamines, and reducing the use of cosmetics for relief. 1. Decreased immunity: Damaged skin cells will make the skin immunity decline, so that the skin stratum corneum thinning, resistance to external stimuli caused by dry sensitive skin. You can take vitamin C tablets and apply vitamin E cream as prescribed by your doctor. 2. Ultraviolet radiation: the skin is exposed to sunlight and air pollution for a long time, ultraviolet rays, dust in the air will stimulate the skin’s protective layer and the formation of dry skin. It can be repaired by physical sun protection and moisturizing drugs such as vitamin E cream and silicone oil cream as prescribed by the doctor. 3. Allergic dermatitis: dry skin can cause allergic dermatitis, dermatitis for a long time not dealt with will make the skin become dry sensitive skin, so that the skin redness, swelling, dry itching and other symptoms. You can take cetirizine tablets, chlorpheniramine maleate tablets and other antihistamines to repair it under doctor’s advice. 4. Use of poor-quality cosmetics: A few cosmetics contain excessive mercury, lead and other harmful substances, or contain fragrances and preservatives, which will irritate the skin with regular use, making the skin become dry and sensitive and prone to redness, swelling, stinging and other symptoms. This can be alleviated by reducing the use of cosmetics. When dry and sensitive skin, you can go to the hospital dermatology department to check the specific cause of the disease, in accordance with the doctor’s instructions for medication.