What is the skin barrier? The outermost layer of the skin is called the stratum corneum, which is composed of 20 layers of flat, interwoven keratinocytes. Keratinocytes are as tough as “bricks”, between which there are lipids, such as “mortar”, that connect keratinocytes closely to each other to form a “brick wall structure”, and a layer of its surface. On its surface, there is a protective film (hydrolipidic film) composed of sweat and sebum, which together constitute the skin barrier. Skin barrier can lock the skin moisture and oil, and resistance to a variety of skin surface bacteria invasion, plays a very important role in protecting human health. Second, skin diseases and skin barrier Skin diseases are diverse, many skin diseases are prone to recurring, but it is difficult to find specific causes. Common skin redness, itchy, dry and other “skin allergies” performance, it is difficult to find specific “allergy” source. But these skin diseases have a common cause can be found “skin barrier damage”, that is, the skin surface has lost the normal protective function and the loss of skin moisture, resulting in dry, flaky or itchy skin; at the same time, the surface of the skin germs are easy to go through the damaged skin barrier and enter the skin, which further At the same time, germs on the surface of the skin can easily pass through the damaged skin barrier and enter the skin, thus further triggering skin inflammation. Therefore, damaged skin barrier is not only a manifestation of many skin diseases, but also may be an important reason why skin diseases tend to recur. Skin care products and the skin barrier In the treatment of skin diseases, doctors not only use drugs, but also skin care products that can repair the skin barrier function, that is, through moisturizing skin care products to replenish the “hydrolipidic film” on the surface of the skin and the “plasma” between the cells, thus reinforcing the “plasma” on the surface of the skin. Reinforce the skin surface layer of the “brick wall structure”. Third, the basic raw materials of medical skin care products Repair of the skin barrier moisturizing skin care products should have the following three kinds of basic raw materials: wet agent raw materials, including glycerin, urea, etc., from the environment to absorb water, replenishment of water from the stratum corneum emitted by the loss of water. Sealing agents, such as petroleum jelly and avocado oil, form a thin hydrophobic oil film on the skin surface, which strengthens the skin barrier. Add and epidermal, dermal composition of the same or similar “bionic” raw materials, with the role of repairing the skin barrier, such as natural moisturizing factors, green prickly fruit oil, ceramides, hyaluronic acid. Fourth, what is medical skin care products? Doctors used to assist in the treatment of dermatological skin care products can be referred to as “medical skin care products”, it is compared with ordinary skin care products, the requirements have the following three characteristics: 1, a higher level of security: more than ordinary skin care products emphasize the formulation of streamlined, raw materials, strictly screened, does not contain or as little as possible easy to damage the skin or cause skin allergies, such as pigmentation, fragrance, preservatives, irritants, and so on. The skin care products emphasize more than ordinary formulations, strict screening of raw materials, do not contain or minimize the content of substances that are likely to damage the skin or cause skin allergies such as pigments, fragrances, preservatives, irritating surfactants, and as far as possible to the raw materials of the product for clinical safety assessment. 2, clear efficacy: moisturizing and repair the skin barrier function of the main components of the skin care products have a clear mechanism of action, and has been confirmed by scientific experiments and research. 3, a number of hospitals clinical verification: pre-market through a number of hospital dermatology department for certain skin diseases to verify the clinical effectiveness of skin care products to assist in the treatment of clinical efficacy and safety. By the above three characteristics can be seen, medical skin care products itself on the skin without any toxic side effects, can be used for a long time, as appropriate, in order to reduce or alleviate the recurrence of skin diseases. Fifth, which common skin diseases to use medical skin care products? In the treatment of different skin diseases, medical skin care products used in different ways. Some skin diseases can be relieved with moisturizing skin care products alone, some skin diseases must be based on drug therapy with the use of moisturizing skin care products. 1, eczema, atopic dermatitis eczema or atopic dermatitis is one of the most common chronic recurring skin diseases, in the acute phase of swelling, vesicles, oozing, in the chronic phase of dryness, flaking. Moisturizing skin care products are therefore the basis of treatment for the chronic phase of such disorders (skin care products should not be used during the acute erosion and oozing phase). For mild chronic patients, the use of moisturizing skin care products alone may alleviate the condition, for recalcitrant or accompanied by obvious skin lesions of patients, based on moisturizing skin care, with drug therapy. After the lesions are controlled, consider discontinuing the medication and continuing to use moisturizers to reduce the recurrence of such dermatitis. For patients with atopic dermatitis, even the normal appearance of the skin is relatively dry, so also need to use moisturizing skin care products to reduce its attacks. 2, psoriasis Psoriasis is a chronic disease that manifests itself as repeated large-scale flaking of the skin lesions, which tends to be aggravated by the dry climate in winter. The basic treatment of psoriasis is moisturizing skin care, and at the same time using the corresponding topical drugs or ultraviolet light therapy, if necessary, the use of systemic oral or injectable drugs. However, oral drugs such as Avicenna or phototherapy can aggravate the dryness of the skin, therefore, it is necessary to cooperate with moisturizing skin care at this time. 3, erythroderma erythroderma is a manifestation of the whole body skin redness, swelling, flaking of a serious skin disease, this kind of dermatitis makes the patient unusually uncomfortable, and it is possible to make the surface of the skin bacteria through the damaged skin barrier into the human bloodstream and secondary systemic bacterial infection. Therefore, moisturizing skin care is very important, when the lesions are large dry, flaky, it is appropriate to use with oily petroleum jelly ointment or boric acid ointment, when erythroderma manifested as fine chaffy scales, it is appropriate to use a better comfort cream moisturizing skin care products. 4, dry skin pruritus The disease occurs in the fall and winter seasons, especially in the middle-aged and elderly sebaceous gland function decline, more likely to appear dry or itchy clinical symptoms. Single moisturizing skin care products can generally significantly reduce the symptoms, but need to be used for a long time, if necessary, with oral antihistamine drugs, and do not over-clean the skin. 5, congenital ichthyosis Due to genetic abnormalities, ichthyosis patients have different degrees of dry skin. Mild ichthyosis patients with moisturizing skin care products can relieve the symptoms, the more serious patients can be used during the day Vaseline ointment or boric acid ointment and other medicines that have the role of sealing, and then use the cream type moisturizing skin care products with better comfort at night. 6, perifollicular keratosis patients with perifollicular keratosis due to genetic abnormalities, so that the skin around the hair follicles rough, dry. Mild keratosis pilaris patients, can use moisturizing skin care products to alleviate the symptoms, the symptoms of obvious people in the moisturizing skin care on the basis of topical drugs or fruit acid peeling treatment. 7, exfoliative keratolysis is a chronic recurrent skin disease that occurs on the palms of the hands and soles of the feet, manifested as dry skin, flaking, no obvious itching symptoms, but the cause of the disease is not clear. Long-term external moisturizing skin care products is the main means of treatment of the disease, for the more serious can be short-term external hormone cream. 8, facial seborrheic dermatitis Facial seborrheic dermatitis is a kind of chronic dermatitis that occurs in sebaceous gland-rich areas. Due to the lesions at the skin barrier function is obviously impaired, thus appearing dry skin, flaking and other symptoms, and easy to recur. Mild patients with moisturizing skin care products alone is effective; for recalcitrant patients in moisturizing skin care on the basis of short-term topical drugs. For the nasolabial folds or the bridge of the nose with obvious greasy seborrheic dermatitis can be used in conjunction with the use of oil-control skin care products. 9, Rosacea Rosacea is a chronic dermatitis that mainly occurs in the center of the face, such as cheeks, forehead, perioral or nasal, mainly manifested in the center of the face paroxysmal redness, and in the sun, emotional excitement or elevated temperatures when the redness aggravated, and facial vascular hyperplasia and red pimples, pustules, a small number of patients can be seen in the nose redness or enlargement (therefore, this disease can be called). “rosacea”). Clinically, the vast majority of patients with rosacea occurring on the cheeks and around the mouth are associated with varying degrees of impaired skin barrier function and dryness and flaking, so it is very important to moisturize and care for the skin while taking oral medications. However, patients who occur in the nose often show greasy skin, it is appropriate to use oil control skin care products. 10, hormone-dependent dermatitis Hormone-dependent dermatitis is due to long-term topical hormone drugs or topical hormone-containing skin care products and make the skin barrier serious breakthrough of a chronic dermatitis, moisturizing skin care is the key to treatment. However, after stopping hormone 3 days or so, there will be a rebound of symptoms (i.e., manifested as uncomfortable dryness, itching, burning and other symptoms aggravated), must adhere to the use of moisturizing skin care products, generally in the treatment of 2 weeks after the symptoms began to gradually improve, and then continue to use moisturizing skin care products for 4-8 weeks so that the symptoms continue to subside. 11, chronic photodermatitis chronic photodermatitis is a good in the exposed parts of the elderly, such as face and neck, back of the hands of chronic dermatitis, with the characteristics of aggravation after sun exposure. This dermatitis is often accompanied by dry, flaky symptoms, in the oral and topical drugs at the same time, need to use moisturizing skin care products. 12, white furfury occurs in children, the disease is self-limiting, should not be excessive drug therapy. Topical moisturizing skin care products is the first choice, if necessary, short-term topical drugs. 13, sex lipitis and perioral dermatitis Peeling lipitis is one of the most common chronic inflammatory disease, manifested by repeated flaking, thickening of the lip mucosa. Perioral dermatitis occurs in the upper lip, jaw, nose and lips, also manifested as redness, dryness, flaking. These two types of dermatitis single moisturizing skin care products may achieve good clinical results, for recalcitrant patients can be short-term topical drugs, to be better after the lesions that is to stop using drugs, but the need for long-term use of moisturizing skin care products to reduce the recurrence of this type of dermatitis. 14, sensitive skin facial skin due to impaired skin barrier function and stinging, burning, dry, red and other clinical manifestations, but not due to a specific skin disease caused by this phenomenon in medicine called “sensitive skin”, the common causes are as follows: facial skin of a sub-healthy state: often due to dry climate, Environmental pollution, poor skin care habits or patients with neurological disorders and triggered. Pharmacological treatment of dermatologic conditions: for example, oral retinoids for acne or psoriasis, one of the side effects of these drugs is a temporary impairment of the skin barrier function, i.e., dryness and flaking of the skin or the mucous membranes of the mouth and lips. Minimally invasive treatment of dermatological diseases: such as modern laser or fruit acid peeling treatment despite the breakthrough progress brought to the dermatological diseases and skin beauty, but this treatment has a temporary damage to the skin barrier function, to cope with sensitive skin, mainly the use of moisturizing skin care products. 15, accompanied by dry skin and other skin diseases, but where accompanied by dry skin and other skin diseases such as neurodermatitis, pityriasis rosea, pigmented purpura dermatitis, skin amyloidosis, etc., can be used to moisturize the skin care products to carry out auxiliary treatment. Sixth, the use of methods and instructions Face: should consider the use of mild non-stimulating cleanser, and in the cleansing of the face after the use of moisturizing water, and then the use of medical moisturizing skin care products, while going out when the use of sunscreen appliances, and outside the application of mild and non-stimulating sunscreen, but in the acute stage of dermatitis, the need to be careful with the use of sunscreen. Trunk and limbs: Cleanse only with water or mild non-irritating body wash and apply medical moisturizers. If topical medications are needed, moisturizers can be applied first to increase skin hydration, and then medications can be applied after 30 minutes or so. Types of moisturizing skin care products: commonly used as creams, but can also be gels, water or masks, etc. In the clinic, how to choose the type, should be based on the skin symptoms to make a decision.