When we talk about sensitive skin, we usually refer to the skin type that is prone to discomfort due to physical, chemical and mental stimuli. Unlike allergies, sensitive skin has no specific allergens, the biggest cause is the skin barrier is damaged, so the external micro-stimulation will lead to sensitivity and discomfort, there may be fever, tingling, itching and tightness, but also may be accompanied by erythema, flaking and so on. Strictly speaking, sensitive skin is not a disease, but a kind of skin sub-health state, and allergy is a symptom, contact with allergens triggering redness, swelling, itching and heat. Sensitive skin main performance: 1, looks like thin skin, easy to allergy, red blood on the face is obvious (dilated capillaries); 2, the skin is easy to redness, general temperature changes, too cold or too hot, the skin is easy to redness, heat; 3, easy to be stimulated by the bad factors, seasonal changes and facial care products, usually attributed to the genetic factors, but more often due to the use of hormone cosmetics lead to sensitive skin. Sensitive skin. Sensitive skin is divided into primary and secondary. More than 70% of sensitive skin is secondary, including that caused by topical acne, whitening, anti-sensitizing drugs (such as hormone-containing ointments, fruit acids, retinoids, etc.), inappropriate skincare (excessive cleansing, exfoliation, whitening and blemish removal), and post-laser surgery. As well as dermatologic diseases accompanied by hypersensitivity . Whether primary or secondary sensitive skin, skin barrier damage is a key component in the development of sensitive skin. Every day in the outpatient clinic can see a large number of young women due to skin barrier function damage caused by a variety of facial skin problems, making their suffering. Research shows that in our country 1.3 billion people, there are nearly 1.1 billion people’s facial skin is sub-healthy, of which about 400 million people’s skin is in a damaged state, are you one of them? Ever wondered why, exactly, our skin is always all kinds of problems? Let’s take a look at what the skin barrier is. Skin barrier system – the natural defender of human skin Everyone’s skin surface actually has a layer of natural skin barrier system, which consists of human epidermal stratum corneum and sebaceous membrane. The stratum corneum is the outermost part of the epidermis, and the moisture content of the skin is determined by the water content of the stratum corneum, that is to say, whether our skin is dry or not, it depends on this layer. In the stratum corneum, keratinocytes and intercellular lipids are arranged in a brick-wall-like structure, forming a stable skin structure that protects the skin’s barrier function, effectively preventing excessive evaporation of water from the body while preventing bacteria or foreign objects from invading the body. In general, the skin barrier consists of the top layer of the skin on the entire body, which is the surface of the skin visible to the naked eye. Its function is to keep the skin moisturized, smooth and shielded from harmful substances. Most skin problems stem from a damaged skin barrier Undamaged, healthy skin looks and feels smooth, soft, plump, and definitely not dry. However, when the skin barrier is damaged, the skin becomes dry, rough and dull as if dehydrated. Closed air-conditioned environment, increasingly serious environmental pollution, frequent washing and bathing, listening to false and exaggerated advertisements indiscriminate use of skincare products and unknown origin of the beauty salon products …… all kinds of problems will cause damage to the skin barrier, when the barrier is damaged, the skin will quickly start self-repair, but with the passage of time, the skin’s self-repair speed will gradually slow down, once the skin barrier is damaged, the skin barrier will be damaged, the skin will be damaged. Once the skin barrier is damaged, the skin barrier can’t lock the water internally, and can’t resist the attack of microorganisms and chemicals externally, leading to a series of vicious circles. The skin becomes drier and drier, producing all kinds of discomfort. So how to repair the skin barrier? 1, master the correct knowledge of skin care: this is the focus of the focus, as the saying goes, knowledge changes destiny, efforts to learn scientific knowledge of the skin, advocating scientific skin care methods, realistic, do not listen to cosmetic advertisements, cosmetic salesman’s flimflam. 2, the correct cleaning: no matter what type of skin you have, to the correct cleansing, try to use a mild type of cleansing products, such as less foam gel cleansing, be sure to avoid strong oil-control cleansing foam cleanser, soap-based cleansing products, handmade soap, etc. should also try to avoid. Because strong cleaning products will quietly destroy your skin barrier. 3, reasonable exfoliation: not all skin types are suitable for exfoliation, it is not recommended to blindly exfoliation. 4, do not use stimulating products: regardless of whether the skin barrier is damaged, we must consciously avoid the long-term use of strong irritating products (such as alcohol, fragrance, dodecyl sulfate irritating detergents, etc., etc.). Because this will make the healthy skin barrier is damaged, so that the damaged skin barrier and then enter a vicious cycle of 3 steps (i.e., barrier damage – inflammatory substances into the – skin inflammation – barrier damage) 5, auxiliary skincare products: containing natural moisturizing factors of skincare products not only can not stimulate to help the skin to maintain moisture, but also promote the repair of the horny layer of Jun, and then, and then the use of some of the cream containing natural plant oils, in addition to them They can lock the water in the skin, but also provide free fatty acids to the skin, improve the speed of skin barrier repair. In addition, be sure to do a good job of sun protection, choose a mild and non-irritating sunscreen, and carefully apply it every day before going out. At the same time, pay attention to makeup removal, try to choose makeup remover or makeup remover oil, if possible, it is recommended to try to use natural plant oils. 6, self-repair: the skin’s self-repair process is relatively slow, and the speed varies from person to person depending on age, generally speaking, around 20 years old, 3-5 months can slowly recover, more than 30 years old mature skin, it will take at least half a year or longer, in short, this is the need for a very patient process.