Sensitive skin is a sub-healthy skin state, a skin type with reduced tolerance to the outside world, also known as “intolerant skin”, the skin barrier is weak, prone to external stimuli symptoms, resulting in the normal physiological function of the skin is disrupted. The symptoms are aggravated by erythema, papules, dilated capillaries, itching, tingling, burning, redness, and peeling. It is clinically classified into primary and secondary. 1, primary: for example, genetic factors, especially in women with thin skin epidermis, are easily sensitive. 2.Secondary: In dermatology there are many skin diseases that can be complicated by sensitivity, such as inflammatory skin diseases (acne, solar dermatitis); drug irritation (hormones, retinoids, salicylic acid); inappropriate skin care and skin whitening and spot removal (peeling syndrome); minimally invasive and invasive skin treatments (post-laser surgery), etc. In 1983, the American scholar Elias PM proposed the famous “brick wall theory” of the skin’s natural barrier. The skin’s stratum corneum cells and cells form a “brick wall-like structure” through lipids and natural moisturizing factors. The keratin-forming cells are the “bricks”, the intercellular connections are the “reinforcement”, and the intercellular lipids are the “mortar”. Together, they form a natural protective barrier for the body. This means that when the skin barrier is damaged, sensitive skin will appear. How to choose skin care products for sensitive skin Medical skin care products are an important way to repair damaged skin barrier In the process of repairing the skin barrier, doctors should not only use the appropriate drugs, but also use skin care products that can repair the skin barrier function, that is, through moisturizing skin care products to replenish the water-lipid film on the surface of the skin and the “gray pulp” between the cells, so as to strengthen the non-“gray pulp” on the surface of the skin. The moisturizing skin care products that can repair the skin barrier should have the following 3 basic ingredients: 1. moisture-absorbing ingredients, including glycerin, urea, etc., which can absorb water from the environment and replenish the moisture emitted from the stratum corneum. 2. 2.Sealing agent raw materials such as petroleum jelly, avocado oil, etc. 3, add the same or similar to the epidermis, dermis, “bionic” raw materials, with the role of repairing the skin barrier, such as natural moisturizing factor, green thorn fruit oil, ceramide, hyaluronic acid, etc. What is medical skin care products doctors used to assist in the treatment of skin disease skin care products can be referred to as “medical skin care products “Compared with ordinary skin care products, it requires the following three characteristics: 1. higher safety: more emphasis on streamlined formulations than ordinary skin care products, strict screening of raw materials, no or as little as possible substances that can easily damage the skin or cause skin allergies, such as pigments, fragrances, preservatives, irritating surfactants, etc., and as far as possible, clinical safety assessment of raw materials products. 2, clear efficacy: the main product ingredients of moisturizing and repairing skin barrier function skin care products have clear mechanism of action, and have been confirmed by scientific experimental research. 3.Clinical validation in many hospitals: Clinical studies on the auxiliary treatment of certain skin diseases in dermatology departments of many hospitals are conducted before marketing to verify the clinical auxiliary efficacy and safety of skincare products. From the above 3 features, it is clear that medical skin care products themselves have no toxic side effects on the skin and can be used for a long time as appropriate to reduce or mitigate recurrent skin diseases. In addition to the barrier repair of medical skin care products, for some appearing symptoms of the affected also need to be intervention means. 1, symptomatic treatment: cold spray, sedation and anti-itch (Q1064, freezing, micro-needling), moisturizing . 2, anti-inflammatory treatment: hydroxychloroquine, tetracycline, compound glycopyrrolate, etc. 3.Treatment of dysbiosis: Trichophyton rubrum, Sporophora furfur. 4, capillary dilation treatment: drugs (Dexin, brimonidine); laser (intense light, DPL, photoelectric combination) 5, psychotherapy: communication 6, Chinese medicine conditioning: dialectical treatment Daily care of sensitive skin 1, the choice of cleanser Try to use cold water, do not use granular cleanser, not to choose scrub or exfoliating cream, and try to avoid staying in too cold or too hot environment. 2, skin massage Massage skin can increase skin resistance, but it should be noted that the massage to finger tapping is good, you can use the finger belly along the shape and lines of the face to gently massage back and forth to promote blood circulation in the face, but do not use excessive force, so as not to cause dermatitis. 3, diet To pay attention to the nutritional balance, vitamin A, B, C are indispensable substances for skin metabolism, can improve the skin’s resistance, from external adverse factors on the skin, especially vitamin C has anti-allergic effect, can eat more soy products and fresh vegetables, fruits, to increase skin resistance. Be sure to avoid eating irritating food, should be light. 4, skin moisturizing hydration is more important for sensitive skin, skin texture is too sensitive to suffer from the surrounding weather changes, seasonal changes and environmental changes. The corresponding hydration treatment can prevent the loss of skin moisture, the formation of a protective film on the surface of the skin, so that the skin looks more elastic, more youthful. 5, skin sun protection The direct UV rays of the sun is a source of skin allergies, if you travel, especially in places with strong sunlight, you can use the appropriate sunscreen to protect the skin and avoid direct sunlight and UV rays. 6, stay away from cosmetics Sensitive skin is allergic to cosmetics, various chemical components in cosmetics and the cosmetics themselves tend to remain in the pores of the face, lingering, more will aggravate the degree of skin allergy.