There is also a ＂scientific model＂ for safe use of makeup and beautiful life skin care.

　　Editor’s note:Going out with a delicate face is believed to be the advanced pursuit of many beauty lovers. Therefore, how to make your skin coagulate fat? How to make yourself have a prosperous face? How to keep yourself young? It has become the ultimate goal of beauty lovers. Today, People’s Daily Online Health collects and sorts out an episode of "Make a Beautiful Life with Makeup Safely" for you, so that our skin care can also bring a "scientific style".

　　Two misunderstandings of injecting hyaluronic acid into beauty should be avoided.

　　"Hyaluronic acid, also known as hyaluronic acid, is a natural linear polysaccharide existing in human and animal tissues. It is mainly distributed in the vitreous body, joints, umbilical cord, skin and other parts of the eye and plays an important physiological function." Du Guocheng, dean and doctoral supervisor of the Graduate School of Jiangnan University, who has been engaged in microbial metabolic engineering, fermentation engineering optimization and enzyme engineering and technology research for a long time, said.

　　Hyaluronic acid is widely used in medicine, cosmetics and functional foods because of its good physical and chemical properties and biological activities such as water retention, lubricity, viscoelasticity, biodegradability and biocompatibility.

　　However, there are many misunderstandings about hyaluronic acid at present. "The first misunderstanding is that anyone can inject hyaluronic acid. Although hyaluronic acid is a naturally occurring substance in the human body, injecting hyaluronic acid is also a micro-plastic surgery without surgery, but not everyone can inject it. Pregnant women, lactating women, patients with multiple severe allergies, patients with abnormal blood coagulation mechanisms, and people with active skin diseases, inflammation, infection, etc. are not suitable for injection. " Blocking Guocheng said, "The second misunderstanding is that injecting hyaluronic acid is very simple, and you don’t have to go to a hospital or a regular medical institution. This is the most dangerous misunderstanding, and it is also the reason why the skin necrosis, disfigurement and even blindness of the injected person have occurred frequently in recent years due to the injection of fake and inferior products or improper injection techniques. "

　　At present, there are some chaos in the micro-plastic surgery market: there are a large number of parallel imports and fakes, as well as doctors without professional plastic surgery training and fake doctors without medical qualifications, which have had a negative impact on the development of the industry.

　　In this regard, Du Guocheng believes that state supervision, industry associations and enterprises should work together to promote the healthy development of hyaluronic acid industry. National management and supervision continue to improve, resolutely crack down on counterfeit goods and parallel imports, strictly examine and approve the system, give full play to the role of industry associations, and unite more professional doctors to convey positive hyaluronic acid knowledge. At the same time, as an enterprise, it should also enhance its core competitiveness and provide more high-quality, high-grade and high added value raw materials and end products.

　　Four requirements must be met in choosing medicines and cosmetics.

　　Cosmetic is a kind of product that has both cosmetic characteristics and pharmaceutical properties, or is between cosmetics and topical drugs in dermatology. It takes natural active ingredients as raw materials and has certain curative effect. Common cosmeceuticals have the functions of cleaning (generally soap-free, non-alkaline, mild and non-irritating), moisturizing (adding skin barrier repair ingredients), controlling oil and removing acne (containing surfactants for cleaning excessive sebum on skin surface), whitening and lightening spots (containing active ingredients for inhibiting or interfering melanin synthesis and operation), anti-wrinkle (containing cell growth regulators or antioxidant ingredients) and sun protection (containing no pigments, spices and sensitizing preservatives, with high safety).

　　For products that can be called cosmeceuticals, the formula ingredients should be completely disclosed, and all effective ingredients and safety must be proved by medical literature and clinical tests in dermatology, and they do not contain recognized allergens; Simple formula, no pigment, essence, preservative and chemical source surfactant; The content of effective components is high and targeted, and the efficacy is more clear and obvious than that of conventional cosmetics; Production according to GMP pharmaceutical specifications.

　　Medicinal cosmetics are not only different from ordinary cosmetics (batch number "Weizhuangzhun"), but also obviously different from special-purpose cosmetics (batch number "Weizhuangte"), and their safety and proven efficacy are the most important features.

　　It should be noted that compared with foreign countries, China’s local cosmeceuticals are still in the initial stage. Because there is no approval number and corresponding production standards for cosmeceuticals, the relevant policies are still not perfect, and cosmeceuticals have always been in a gray area without official status. It is illegal for many local products registered or filed in the name of cosmetics on the Internet to claim "cosmeceuticals". If consumers need to buy cosmeceuticals, it is best to go to a regular hospital and ask a doctor for a prescription.

　　Experts teach you to identify the "four steps" of cosmetic quality

　　Yan Jiangying, member of the National Medical Products Administration Party Group and deputy director, said that cosmetic safety has become a new focus of people’s livelihood, and protecting the public’s cosmetic use safety requires social co-governance, focusing on four aspects. First, enterprises implement the main responsibility, strengthen scientific and technological research and innovation, and put an end to false and exaggerated propaganda; Second, the industry should be self-disciplined; Third, the regulatory means should be innovated, and the regulatory information such as cosmetics registration, production and operation, supervision and sampling inspection should be organically integrated step by step to build channels and platforms for participation from all walks of life; The fourth is to do a good job in popular science propaganda.

　　Wu Yan, chief physician of Peking University First Hospital, said that if consumers have adverse reactions after using skin care products, it is recommended to do three things: First, stop using suspicious skin care products immediately; The second is to go to the hospital immediately for relevant diagnosis and treatment; Third, it is necessary to report the relevant information to the relevant departments, which will help the relevant departments to better detect cosmetics on the market.

　　National Medical Products Administration reminded the public that in the pursuit of beauty, consumers should keep their eyes open, choose formal channels to buy cosmetics, consume rationally, do not believe in false and exaggerated propaganda, and correctly understand the efficacy of cosmetics.

　　Experts pointed out that identifying the quality of cosmetics is mainly a "four-step process": at first glance, the color changes, which may be due to the pigment produced by microorganisms that makes cosmetics yellow, brown or even black, or it may be that some ingredients in cosmetics deteriorate to produce color changes; Second, smell the smell, whether it produces bubbles and strange smell; Third, see if it is thin and thick, and whether it becomes thin and watery; Check the surface layer for green, yellow, black and other mildew spots.

　　Summer skin care should also have a "scientific model"

　　Every summer, the misunderstanding of skin care about cleaning and sun protection will always make many people "recruited". In fact, as long as you understand some scientific knowledge behind the skin, you can effectively prevent it.

　　Li Li, chief physician of west china hospital Dermatology Department, said that the skin consists of epidermis, dermis and subcutaneous tissue. The outermost layer of epidermal structure is stratum corneum, which has the function of locking moisture and resisting the invasion of various skin surface germs. As a skin barrier, once it is destroyed, the skin will be dry, red, itchy and allergic, and accelerate aging.

　　Many experts pointed out that it is precisely because of the characteristics of the stratum corneum that it is unscientific to excessively clean or use toner and spray water frequently in summer. Excessive cleaning will destroy the stratum corneum, leading to thin red skin, vasodilation, backlight rash, etc., and fall into a vicious circle of "covering-cleaning". Toner, spray, etc. can directly replenish the moisture in the stratum corneum, but it will evaporate soon. Excessive use will also wash away the natural sebum film and cause the risk of dry skin.

　　"Many skin patients are middle-aged and elderly men, so men should also pay attention to sun protection." Professor He Li from the First Affiliated Hospital of Kunming Medical University reminded that both men and women should do well in sun protection all year round.

　　To protect the skin barrier, we should avoid the following behaviors: improper selection and use of mask wet compress, deep cleaning, hot water washing, frequent exfoliation, neglect of sun protection, abuse of skin care products and cosmetics, etc. Once skin problems occur, you should go to a regular hospital in time.

　　External application of vitamin E, moisturizing and freckle removing

　　Vitamin E is one of the common antioxidants. Oral vitamin E can delay aging, reduce wrinkles and maintain youthful appearance. Zhang Jingdong, chief physician of the Department of Dermatology, Zhongda Hospital affiliated to Southeast University, said that the entry of vitamin E into skin cells can directly help the skin fight against free radicals, ultraviolet rays and pollutants, help it maintain elasticity and prevent aging. Therefore, in addition to oral administration, vitamin E can be directly applied to the face.

　　External use of vitamin E can weaken the photoaging of skin, reduce the risk of skin tumors, reduce the immunosuppressive reaction caused by ultraviolet radiation, and reduce the occurrence of erythema, edema and wrinkles related to sunburn. The specific usage is as follows:

　　Vitamin E whitening method: Take two spoonfuls of yogurt, half a spoonful of honey and half a spoonful of lemon juice, and mix with three natural vitamin E to make a paste; After 15 minutes of application, wash with warm water, and be careful not to use overheated or supercooled water. This method can thoroughly remove dirt from pores, nourish and whiten.

　　Vitamin e moisturizing method: puncture the vitamin e capsule with a needle, drop the liquid into emulsion or cream, and apply it to the parts that need maintenance, which can effectively moisturize. After bathing, vitamin E mixed with skin care lotion can avoid skin dryness and peeling, especially suitable for women who work in air-conditioned rooms for a long time.

　　Vitamin e freckle removing method: take the liquid in vitamin e capsule and smear it on the freckle, gently knead it for 5~10 minutes, twice a day, and it will have a good effect if you persist.

　　Experts remind that in order to avoid skin allergy, it is best to conduct a small amount of skin test before external application. Oral vitamin e should not be overdosed, and should be used according to the doctor’s advice. Besides external application, eating foods rich in vitamin E can also whiten and remove spots, such as kiwi fruit, spinach, cabbage, lettuce, sweet potato, yam, almond, hazelnut and walnut.