First of all, sensitive skin and “skin allergy” are two different concepts. Skin allergy is a kind of allergic reaction, by allergens into the body, prompting the body to produce corresponding antibodies, triggering an antigen-antibody reaction, manifested in erythema, papules, doughnuts and other objective clinical signs, often accompanied by itching. Sensitive skin, on the other hand, is usually characterized by reduced tolerance to stimuli and a series of abnormal sensory responses, mostly lacking objective signs, and although the mechanism of its occurrence is not very clear, it is generally accepted that it is not accompanied by immune or allergic mechanisms. If your skin is sensitive, you need to choose your daily care cosmetics carefully and live a more attentive life. So what are the factors that lead to your sensitive skin? 1, the use of irritating facial cleanser Many people use facial cleanser containing irritating excessive cleaning ingredients, easy to cause the product to the skin irritation is too large, the use of the sebaceous membrane and stratum corneum lipids caused by damage to the skin barrier function is damaged in the long term, the vicious cycle begins: the skin’s ability to reduce the protective capacity of the skin leads to the entry of inflammatory substances; inflammation caused by itching and further reduction of the skin barrier. The result is that the skin is unable to retain moisture, and skin dehydration further causes skin inflammation, itching and dryness which in turn causes the formation of sensitive skin. Therefore, for the countermeasures to wash the face, there are the following points to note: (1) choose a mild cleansing products; (2) do not use too hot water to wash your face for a long time; (3) avoid frequent facial care in the beauty salon. 2, do not moisturize, excessive skin dryness Sensitive skin, a large part of the population is dry skin (of course, oily skin also has sensitive type), for dry skin, the development of sensitive skin is very likely, in the cold environment, the stratum corneum brittle enhancement, dryness caused by itching, itching caused by scratching easy to destroy the stratum corneum, but also easy to lead to damage to the barrier function. Moisturizing is the first need for skin care We need to do a good job of moisturizing the skin in a timely manner according to changes in the external environment. But the reality is that moisturizing products used so much, why skin did not become a little more moist? That’s because the moisturizing products you use in addition to traditional moisturizing ingredients, but also the lack of lipid repair ingredients and natural moisturizing factors, such as common lipid repair ingredients ceramide, fatty acids or cholesterol, natural moisturizing factors sodium lactate, sodium PCA-sodium, urea and so on. In particular, ceramides, fatty acids and cholesterol are essential for building a healthy skin barrier. Therefore, dry skin should use moisturizer or related products at least twice a day. If in an air-conditioned environment, use an air humidifier. In other dry environments, such as flight journeys, etc., are dry environments, some high cold and high altitude areas, remember to always do a good job of moisturizing the skin. 3, not sunscreen Sunscreen is a daily essential products, because sunlight not only lead to your black, sunburn, the cause of aging, at the same time sunlight will also destroy the skin barrier function. Sun exposure aggravates skin dryness, and UV rays inhibit the growth of skin enzymes that produce key components of the skin, thereby disrupting the skin’s ability to lock in water. As a result, sunburned skin becomes scaly and flaky, and this damage leads to further dryness and flaking. Sun exposure also reduces the amount of hyaluronic acid in the skin. Hyaluronic acid absorbs water, allowing the skin to become full and maintain a certain volume. Skin damaged by the sun tends to lose volume, partly due to the loss of hyaluronic acid. In addition, sun exposure can cause your skin to darken, sunburn, and age. So, it’s important to make sure you protect yourself from the sun. This is especially true for sensitive skin, and if you are worried about chemical sunscreens, you can use sunscreen products with physical sunscreens. 4, excessive skin care Cosmetic brands hate to empty your silver at once: education you have to support the use of a variety of products to be effective. At the same time and developed a variety of new product types, further increasing the steps of skin care, and the original steps together, increasing the possible harmful effects of some of these ingredients. For example, when it comes to preservatives, the excessive use of skin care products increases the total amount of preservatives that stay on the face. Preservatives that would not be a problem with normal dosage are stacked on top of each other, leading to excessive use and safety issues. On the other hand, some people like to use each brand of products to use with, such as A brand of water, B brand of essence, C brand of day cream, this combination is generally in accordance with the best products of each brand to choose, the ideal is good, but the reality is not necessarily work, and in turn, may not be good for the skin. A brand of products in the ingredients has been quite a lot, several brands of products, ingredients with different materials, so many ingredients together stacked, not to mention the effect will be how to change, just these too many ingredients, the skin does not need the kinds of quite a lot. Dozens of hundreds of ingredients on the face, who knows what will happen? That’s why streamlining your skincare routine is an important skincare principle to prevent turning into sensitive skin. Do not spend the money, the face did not become good instead of tossing bad, it is not worth it. 5, the use of hormone-containing skin care products Some skin care products secretly added hormone products, can temporarily play a role in contracting blood vessels, control the role of inflammatory response, sensitive skin seems to be very effective. Problem skin will also feel better soon after using hormone-containing products. But after discontinuing the use of hormonal skin care products, the condition will recur with vasodilatation, rashes, redness, swelling and other serious skin problems. The skin barrier function is also damaged in the use of hormonal cosmetics and sensitive skin ensues. Therefore, it is important to make sure that the products you use are regular products. Avoid using hormone-containing skin care products.