Engine problems caused China’s J-20 production to be delayed. Photo: SCMP The South China Morning Post (Hong Kong, China) reported that the country has developed a new coating material for the engine, contributing to solving technical flaws and increasing the thrust of the engine. The new coating material was designed by Yuanke Energy-saving and Environmental Technology Development Co., Ltd. in Hebei Province. This material can withstand temperatures of 1,800 degrees Celsius and helps protect the engine from the risk of corrosion while ensuring higher power. The current widely used military aircraft engine in China is the WS-10, which can withstand a temperature of about 1,470 degrees Celsius and the improvement can make a significant contribution to increasing the engine’s output power. . The propeller has long been considered the “Achilles heel” of China’s military aircraft engine development program. An obvious example is the delay in the development of a new engine that slows down the production of China’s fifth-generation stealth fighter J-20. Chinese scientists have spent years trying to get the WS-15 engine designed for the J-20 to work, but still have problems with the propellers that constantly heat up at high speeds. As a result, the Chinese Air Force is forced to use Russian-made engines or an improved version of the WS-10. Both of these engines are said to reduce the combat and stealth capabilities of the fighter. The new coating material consists of a fullerene, a ball-shaped carbon molecule. The manufacturer says the coating has a “2,000-hour lifespan” and is resistant to corrosion. The special thing is that this material can withstand the heat required for the J-20 to operate at its maximum capacity.

Students studying for exams at Phan Chau Trinh High School (Da Nang). The key knowledge in the high school graduation exam is in the 12th grade Chemistry program, the number of questions related to the 11th grade program is very small and mainly combined with the general knowledge question. Reinforce basic theory Ms. Huong said: Chemistry is an experimental science with a large amount of knowledge, ranging from theory at the level of awareness and understanding to exercises at a high level of application and application. According to Ms. Huong, from qualitative to quantitative exercises, experimental questions to questions related to economic, social, and environmental issues… most students focus on conquering Quantitative exercises with the desire to achieve high scores in the exam but forget that quantitative exercises only account for 25% of the exam structure (about 10 questions/40 questions of the Chemistry exam). Click on the image to view the content. “Students should have a more realistic view of the exam questions, thereby increasing the amount of time to review and consolidate basic theory into a fixed source of capital for themselves before each exam,” Ms. Huong said. In addition, Ms. Huong illustrates the learning method for the knowledge content on metal corrosion, metal preparation in the metal outline section. Systematic knowledge to grasp includes: Corrosion of metals and metal processing. Specifically, metal corrosion is the destruction of metal or alloy due to the action of substances in the surrounding environment (M > Mn + + ne). In particular, metal corrosion has two forms: chemical corrosion and electrochemical corrosion. Chemical Corrosion: Corrosion reaction does not generate electric current. And electrochemical corrosion: Corrosion reaction simultaneously generates electric current. Electrochemical corrosion occurs when in a material there are different electrodes, in contact with each other and placed in an electrolyte environment. Rust (corrosion of cast iron and steel objects in moist air, acid …): Fe-Anode (-): Fe > Fe2+ + 2e (Oxidation) C-Catot (+): O2 + 2H 2O + 4e > 4OH– (Reduction) Or: O2 + 4H+ + 4e > 2H2O Rust generation reaction: 2Fe + 3/2O2 + nH2O > Fe2O3.nH2O The similarity between chemical corrosion and electrochemical corrosion is the oxidation – reduction process. But chemical corrosion does not generate electric current, metal corrodes slowly; while electrochemical corrosion generates electric current, metal is corroded quickly. For metal protection against corrosion, there will be two methods of surface protection: Isolate metal from the environment by coating the metal surface with environmentally sustainable substances such as grease, paint, and plating. metal, enameled; also electrochemical protection that binds a metal to another more active metal. For example, attaching zinc to the steel hull (submersible part) will corrode the zinc and protect the hull. Preparation of metals, the principle of reducing metal ions to metal atoms (Mn + + ne > M). With methods of electro-treatment, heat-treatment and hydro-treatment. Formula for expressing Faraday’s law: (according to the number of moles of electrons exchanged). m: Mass of substance collected at the electrode (g) A: Molar mass of the substance obtained at the electrode (g/mol) n: Number of electrons exchanged I: Amperage (A) F: Faraday’s constant (F = 96500) Students need to draw connections, simple ways of remembering when doing related types of work. For example how to solve the question package about metal modulation methods like: Which of the following metals can be prepared by hydrometallurgy? A. Ca. B. Na. C. Mg. D. Cu. Which of the following metals can be prepared by solution electrolysis? A. Ag. B. Na. C. Ba. D. Al. You can use diagrams for this type of question like this: K, Ba, Na, Mg, Al – Zn, Fe, Ni, Sn, Pb, Cu, Hg, Ag, Pt, Au Molten electrolysis Solution electrolysis, heat treatment, hydrometallurgy. The way to do the test effectively is to calmly read the exam questions. Hundred or used manually Ms. Huong said: When reviewing, students need to remember the principle “Hundred or not with familiar hands”, repeating information as much as possible, the deeper the memory, the easier it is to recall. So do as many exercises as possible. When doing the test, there must be a relationship of knowledge, good points, and skills that need to be applied to each type of post; exchange materials with friends and teachers. Click on the image to view the content. “For lessons on mainstream theory, students need to master the definition and concept, understand the essence of that definition and concept, and know how to apply it to solve related questions. For the lesson on quality, candidates need to firmly grasp the name, properties, relationship between structure and properties, and practical application”, Ms. Huong said. According to Ms. Huong, in order to solve chemistry exercises, students first need to master the theory, then practice more skills in applying theory to specific exercises, problem analysis skills, and using tricks. calculate… According to Ms. Huong, the effective way to do the test is to calmly read the exam questions. With the form of theoretical questions, quickly read through the sentences to see the answers immediately, the questions are left to do later. With the question type of counting the number of true/false statements, in each statement should note the points in the topic. wrong, exception, it will be more convenient for you to check your work again. With the form of quantitative exercises, which sentences are familiar, have been met and done first. Which sentences are difficult and novel to do later and when done, you should combine looking at the answer because some sentences can be easier to navigate from the answer.

How to live safely with asbestos-containing materials? Dangers of asbestos One of the most widespread uses of asbestos in the construction industry is the creation of fiber-cement sheets for roofing, which we often call Phibroximang, or asbestos-cement corrugated iron. Because of its heat-resistant and fire-resistant properties, asbestos has been added to many roofing products, including tiles. Fiber cement board contains not only asbestos. They are mostly made from cement. According to manufacturers, fiber cement panels are usually made of 10-15% asbestos. The most common way for asbestos fibers to enter the body is through the airways. In fact, asbestos-containing material is not generally considered harmful unless it releases dust or fibers into the air where they can be inhaled or ingested. Much of the fiber gets stuck in the mucous membranes of the nose and throat, where it can be eliminated, but some can travel deep into the lungs, or if swallowed, into the digestive tract. Once they get trapped in the body, the fibers can cause health problems. Asbestos is most dangerous when it is flaking. The term “friable” means that asbestos is easily broken up by hand, releasing fibers into the air. Asbestos is often “faded” after the roofing sheet is used for a number of years, rain, wind and moss make the protective cement layer rot. Damage and deterioration will increase the friability of asbestos-containing materials. Water damage, constant shaking, aging and physical impact such as drilling, grinding, polishing, cutting, sawing or impact can break materials making it easier to release fibers. Ceiling tiles, floor tiles containing asbestos, heat and sound insulation layers, shingles, fire doors, especially roofing sheets… will not release asbestos fibers unless they are disturbed or damaged as mentioned above. . For example, if asbestos ceiling tiles are drilled or broken, it can release fibers into the air. If it is left alone and undisturbed, it will not release the asbestos fibers, but this is very unlikely in practice, for example, when roofing sheets are used for a long time. Currently, there is no decision requiring removal of asbestos roofs, so the decision is up to the community. Obviously, it will be necessary to take into account the cost of removal and replacement. Therefore, for new roofs, it is not necessary to remove, but can live with it, provided that there are safe solutions. But with a weathered roof, there is a great risk of deterioration, which can expose families and neighbors of homes with asbestos to harmful asbestos fibers. Theoretically, in roofing, asbestos materials mixed with cement should be kept tight, they do not pose the same threat as fragile materials to human health. However, if these roofing sheets are broken, corroded, disturbed, damaged, degraded or broken, they can release toxic fibers into the air and become hazardous. Corrosion of asbestos-containing products by weather (rain, sun, wind, storm or frost, which causes a change in the cement layer surrounding the asbestos fiber over time) can cause fiber release in within 15 years. Safe living with asbestos When living with irreplaceable asbestos-containing material, it should be checked regularly for signs of wear or damage such as tears, scratches or water damage. If asbestos-containing materials are damaged more than mildly, or if home repairs are being made that could disturb it, extreme care should be taken and handling it in accordance with safety regulations. When asbestos-containing material is damaged, activities around it should be kept to a minimum. Take all precautions to avoid damage to the asbestos material. With any type of repair, the asbestos must be kept in place. Repair is usually cheaper than removal, but it can make later removal of asbestos, inevitably, more difficult and costly. Major repairs should only be carried out by specialized units that know the safe handling methods of asbestos. Before performing minor repairs, be sure to follow all of the precautions outlined above. Always wet the asbestos material using a fine mist of water containing a few drops of detergent. Areas with insulation can be covered by wrapping a special fabric, such as flexable glass cloth, around it. These products are available in stores. This is the best, safest, economic thing possible. We should replace asbestos-containing materials with other materials, such as: corrugated iron roof, PVA fiber roof, steel pipes… Currently, on the market, there are many alternative materials that are both durable and good. no effect on health and reasonable price. What not to do with asbestos-containing materials in the home: Do not dust, sweep, or vacuum debris that may contain asbestos. Do not saw, sand, scrape or drill holes in the face of the asbestos material. Do not use sandpaper, wire brush or other hard objects to remove rough spots on the surface of asbestos-containing materials. Never use the wiper on dry floors. Do not sand or attempt to smooth the floor with asbestos or its substrate. When asbestos floors need to be replaced, install new floor coverings on top if possible. Avoid contact with broken or broken asbestos materials. Take all precautions to not damage any materials that may contain asbestos. Only hire trained personnel to inspect, test, repair or remove asbestos. Asbestos is a toxic and dangerous mineral. Asbestos in all natural forms, including chrysotile asbestos, is a substance with proven carcinogenic activity in animals and humans, capable of causing cancer of the lungs, peritoneum, pleura, stomach and organs other in contact with asbestos particles. Temporarily without replacement, it is possible to live with asbestos-containing material, if it is not old (before 15 years), but with extreme caution. To reduce the risk of cancers, asbestos-containing materials should be removed, if temporarily unavailable, protect it with a coating or polyethylene film to prevent damage and dust release.

Recently, the Economic Police Team, Ba Dinh District Police (Hanoi) suddenly checked the Minh Phat seafood store, located behind Long Bien market, and discovered that the facility used hydrogen peroxide to bleach the ink. selling to the market. At the scene, authorities seized a plastic bottle containing about 30ml of hydrogen peroxide solution and 30kg of bleached apricot squid. The staff of this establishment admitted to repeatedly using hydrogen peroxide to clean the stench and bleach the ink, even though it was clear that this was an additive not allowed to be used in food. At the scene, authorities seized a plastic bottle containing about 30ml of hydrogen peroxide solution and 30kg of bleached apricot squid. It is known that according to the video recorded over many months by the group of reporters, the employees of this facility began impregnating ink in chemicals. The first step is to put a dozen packs of salt into the water tank. Next, put the cuttlefish that has removed all its organs into the barrel. The employee then took a plastic bottle containing a clear solution and poured it directly into the ink tank. According to the introduction of these facility staff, this is industrial hydrogen peroxide, which is very corrosive and bleaching. When working, this young man had to wear rubber gloves that reached to his wrists before putting his hands in the bucket to mix the solution to soak up the squids. Bleaching ink with industrial chemicals, specifically hydrogen peroxide, helps white ink cleaner, harder, remove all viscous substances. With this trick, every day a ton of dirty squid is transported to many restaurants, eateries, and markets in Hanoi. Eating squid bleached with hydrogen peroxide increases the risk of chemical accumulation in the body, which can lead to chronic diseases such as cancer According to Assoc. Prof. Dr. Nguyen Duy Thinh (Institute of Food and Biotechnology, Hanoi University of Science and Technology), the current situation of using cleaning chemicals in industry such as using hydrogen peroxide to bleach ink, helps Fresh squid is delicious, no longer stinks, increasing the risk of chemical accumulation in the body of the eater. Currently, the use of cleaning chemicals in industry such as using hydrogen peroxide to bleach the ink, help the ink stay fresh and no longer stink, increasing the risk of chemical accumulation in the body of the eater. The chemical used to bleach the ink, help the ink stay fresh, remove the dirt, and remove the stench in the dead squid for many days is a solution of hydrogen peroxide, the formula H2O2, also known as hydrogen peroxide. The Ministry of Health once issued a recommendation that the solution should only be used externally, not taken orally. Experts say that when using hydrogen peroxide to bleach food, it will generally have an antiseptic effect, whiten food, and remove odors. However, only pure hydrogen peroxide for medical use can be guaranteed. In fact, food processing facilities often use much cheaper industrial hydrogen peroxide, often containing many impurities and toxins that are harmful to consumers’ health. Therefore, the risk of ingesting ink bleached with hydrogen peroxide at such establishments is really dangerous. This is a form of commercial fraud, threatening the health of consumers. It is worth mentioning that these dirty food effects often appear in the form of chronic diseases, toxins that accumulate for a long time into dangerous diseases, not easily detected in a day or two. How not to buy ink bleached by industrial chemicals? According to experts, when buying ink, you should pay attention to the following selection criteria: – Color: Fresh ink will have a shiny color. The brown part will be dark brown, while the squid body will be milky white. The color of the ink eyes is clear, not protruding, the pupils can be clearly seen and there is no yellowing or discharge. If the ink is not fresh, the eye part has turned more opaque, sometimes there is a discharge. – When touching the squid body: The squid meat is firm and highly elastic. When pressing your hand on the ink body, the ink will quickly return to its original state and leave no dents. – When observing: Fresh squid, the head and tentacles, squid whiskers will stick together, definitely. If the squid is not fresh, the upper parts are usually soft and easy to separate.

Criteria for choosing type of cold corrugated iron According to demand It is possible to rely on the AZ index (weight of zinc-aluminum coating layer) to choose cold corrugated iron suitable for needs. For example, common houses usually use AZ70 or AZ100 corrugated iron. Factories and workshops should choose corrugated iron with a higher coating volume. Color cold corrugated iron has a variety of color options. You are free to choose colors based on feng shui point of view or house style, to harmonize paint color and corrugated iron color. By geographical location Due to the influence of sea steam, the corrugated iron roof of the building near the sea is prone to rust and decay. Easily affects the life and aesthetics of the building. This area should choose colorfast, highly resistant to corrosion, specialized for marine environments. Houses in cold climates should choose corrugated iron with dark colors to help keep the house warm. On the contrary, light colors cool the space, suitable for hot climates. By reputable brand The market is diverse as not all types of corrugated iron have the same quality and meet the needs of use. Should choose corrugated iron from reputable brands. Corrugated iron products from these brands always have clear specifications and good after-sales policies. KING/WIN/S cold sheet of Ton Dong A meets 3 criteria In 2020, Ton Dong A has planned a set of KING/WIN/S brands to give customers many choices. The set of brands has 3 lines of corrugated iron, meeting each need and suitable for different geographical areas. KING high-end line includes KINGCOLOR (color KING sheet AZ100) and KINGALUZIN (Cold sheet KING AZ150). Suitable for all projects, especially works in geographical locations with severe weather. The product is highly resistant to corrosion, durable, and has a much longer life than conventional corrugated iron. The high standard WIN series includes WINCOLOR (color WIN corrugated iron AZ50) and WINALUZIN (refrigerated WIN sheet AZ100). Shiny corrugated iron surface, good heat reflection, heat reduction, heat resistance and effective anti-corrosion. Especially, suitable for residential and civil works. WIN belongs to the high standard product line of Ton Dong A. The S standard series includes S COLOR (Color S-Tel AZ50) and S ALUZIN (Cold S-Til AZ75). The surface of the product is painted with 4 layers, with a total paint thickness of 18 microns to increase adhesion, color fastness and scratch resistance. Both of these cold corrugated iron lines have a shiny surface, good heat reflectivity, effective heat resistance and high economic value. S belongs to the standard product line of Ton Dong A. Ton Dong A products are guaranteed for up to 50 years, professional customer service. In addition, Ton Dong A’s agents are present in all provinces and cities, making it easy for you to buy high-quality corrugated iron. Update the latest information about the KING/WIN/S brand at Ton Dong A fanpage and Website www.tondonga.com.vn.

Titanium is now an important factor in the design of fashion and accessories. Thanks to its high strength, corrosion resistance, and light weight, watchmakers begin to use this metal for the reasons below. Light-weight According to the Momentum Watch , the craftsman can easily design complex titanium watches because it is light and durable. Many people believe that lightweight watches are more suitable for women. However, men are now looking for lightweight products so as not to interfere with arm performance. This is one of the reasons titanium watches are so popular among men. The light weight of the watch makes the user operations easier. Photo: Keepthetime. Durable The titanium watch’s weight is 45% lighter than stainless steel. Also, titanium watches are virtually impossible to rust. This metal can resist most acids, except for nitric acid (a very rare substance that occurs in everyday life). In fact, the corrosion resistance of tian and platinum is similar. Works well underwater Titanium is composed of an oxide film, which does not allow metals to rust or corrode. This makes titanium watches a great choice for divers and those engaged in underwater activities. In addition, titanium can easily survive in harsh environments. Watch makers report the water resistance of this metal to differ from model to model. Water resistance and natural stress resistance make titanium material popular. Photo: watchipidia. Do not irritate the skin According to the GQ Mexico Titanium does not cause any skin irritation when exposed to sweat or water. In contrast to titanium, stainless steel contains nickel, which causes skin rashes or allergies. If you are looking to buy luxury brand watches, titanium watches are the ideal choice. Fashionable Titanium material cannot be mechanically cast to specific shapes in the automated production system. Instead, it needs to be drilled and machined manually. This gives a unique aesthetic to titanium products. In addition, this material also gives a trendy and distinctive color compared to stainless steel. When wearing a titanium watch, you exude both classic and modern style. Its diverse features and outstanding advantages make titanium an indispensable material in watchmaking. Photo: blastingnews. Environmentally friendly metal Besides, titanium is an environmentally friendly metal because it can be easily recycled. Titanium’s unique properties make it the ideal metal for high-end, trendy watchmaking. You can choose a watch model according to your preference or wallet. How to choose watches for men Tim Dessaint suggests a few tips to help the guys get the model that suits the style.

One of the keys to the difference of Activate technology lies in the unique composition and microstructure of the coating. In addition to the aluminum-zinc alloy already in the previous generation, the technology also integrates two magnesium compounds, creating four layers of barrier protection. Unique four-layer matrix microstructure forms four layers of protective barrier for COLORBOND and ZINCALUME. With this unique four-layer matrix microstructure, the new generation COLORBOND and ZINCALUME corrugated iron are able to self-seal at cut edges, screw holes and scratches, thus providing superior corrosion resistance to roof and corrugated iron. This special mechanism protects the building even in the harshest conditions such as coastal environment and polluted industrial zones, helping the building to be durable at the same time. Interestingly, to develop this technology, the Australian Steel Corporation – BlueScope has invested more than A $ 100 million in research and development. Comprehensive test over 20 years To ensure the maximum durability of COLORBOND and ZINCALUME, BlueScope has run a comprehensive testing program that includes laboratory corrosion tests as well as outdoor exposure testing. Over a period of more than 20 years, the company has been experimenting with salt spraying in the lab on more than 8,000 samples. More than 10,000 other samples were exposed to samples at 22 different exposure points across Australia and around the world. In addition, 50 model houses of different applications and 5 models were built for testing in real world conditions and in harsh marine environments. These are remarkable numbers of serious investment, making up the remarkable success of current Activate technology. More than 18,000 prototypes have been tested over 20 years to verify the corrosion resistance of Activate technology. More than 20 patents protected worldwide Another indispensable number is that Activate technology is also granted more than 20 patents protecting manufacturing technology and unique coating structure. In Vietnam, since its first launch in 2019, this technology has created a great reputation, setting a new standard for the domestic galvanized steel industry. Warranty period up to 36 years * Thanks to the outstanding corrosion resistance of Activate technology, BlueScope has confidently increased the warranty period for the new generation COLORBOND and ZINCALUME sheets up to 36 years *. It is worth mentioning that, even in harsh environments such as marine environments with high corrosion, the product is also covered by a warranty. This is the warranty period that few steel brands in Vietnam dare to commit. Kizuna’s storey service workshop area is one of the first projects in Vietnam pioneering the application of COLORBOND iron with Activate integration. The above “talking” numbers partly explain why Activate technology is considered the leading technology in the galvanized steel industry and set a new standard for the galvanized steel industry in Vietnam. * Warranty terms and conditions apply

Porsche cars are perfected on a new technological line Painting the body of a new Taycan on an assembly line at the Zuffenhausen factory previously required workers to move a tool weighing almost 7 with just the thumb 3,600 times per work day. It sounds strenuous, but Porsche has adopted a new system that eliminates that stress and improves quality by using patches to seal holes in the bodywork. These holes are not visible to the naked eye, but are intended to be filled by anticorrosive paints while in the paint shop. Once completed, these holes must be sealed so that they are watertight. If not, leaks will form. Taycan was not only the first Porsche to use this new patching method, but also the first car in the world to do so. The holes in the body of Taycan will be painted with new technology A total of 106 of the 143 holes in the Taycan body are now patch sealed in a very quick and automatic process. As noted previously, line workers do not have to push up to 3,600 plugs into holes in the body per shift. This new process is less complicated, faster and produces a higher quality product. The robot does this kind of work that looks like a barcode scanner. It only takes three minutes to do the whole job while 1 person needs more than seven minutes. Dirk Paffe, Paint Shop Process Planning Manager at Porsche: “The key feature of the solution is not just the seal itself, but also the automation of the process. We can glue patches in large quantities and at high cost, speed with absolute precision using a robot. ” New technology on Porsche Taycan will be spread on its models in the near future Does this mean that robots will soon take over all the work on the human assembly line at Porsche? Not at all, but making the worker’s life much easier and securing a better quality car.

Mistake after extensions

According to the Sohu, The patient is Ms. Wang, 50 years old, from Jiang Yin District, Wuxi City, Jiangsu Province, China. On April 12, she went to the Traditional Chinese Medicine Hospital for an examination after suffering itching, losing eyelashes, and dry eyes. Before that, Wang had extensions at a local beauty salon.

Dr. Zhang Gaoming, deputy head of the Department of Ophthalmology, Traditional Chinese Medicine Hospital diagnosed this woman with blepharitis caused by Demodex mites. On closer inspection, this doctor also discovered a series of demodex ticks nesting on the eyelashes of the patient.

The cause of this phenomenon comes from the unhygienic process of eyelash extensions, the patient does not clean the eyes, the eyelids after the extensions. Doctors have washed the eyes and thoroughly cleaned the area where the eyelashes are nested by the mites. However, the patient is forced to remove the entire eyelash and wait for it to regrow.

According to Dr. Zhang, people with blepharitis caused by Demodex mites often have symptoms of dry eyes, itching, redness, feeling of foreign bodies in the eyes, loss of eyelashes. The disease is common in people who do not regularly clean their eyes, keep pets and accidentally get invaded by ticks. Through the above case, Dr. Zhang recommends that women choose a reputable address, ensure hygiene and have to take care of their eyelashes properly, and clean them regularly.

Ashley had to see a doctor after getting the eyelashes on and got blepharitis caused by Demodex mites. Photo: WFTC 9.

This is not the first documented case of Demodex tick attack and disease after eyelash extensions. April 2018, TV channel WFTV 9, report on Ashley (hide age and address), in Florida, USA, suffering from eye irritation and discomfort after using this beauty method.

Doctors at the Dry Eye Support Center, Orlando Eye Institute, Florida, USA, took Ashley’s eyelash and looked it under a microscope. They found only one eyelash but dozens of tiny Demodex mites are hiding.

Dr Keshini Parbhu, Center for Dry Eye Support, Orlando Eye Institute, said the ticks dug deep into the bottom of the hair follicles and ate up the nutrients in each eyelash. Ashley has been dealing with this and has been advised to regularly clean and disinfect the pillowcases. However, this woman shared herself never again.

How dangerous is blepharitis caused by Demodex mites?

According to the Healthline, tick-borne blepharitis is usually caused by two types: Demodex folliculorum and Demodex brevis. They are all super small in size so they cannot be seen with the naked eye.

Demodex is a tick that lives mainly on the hair follicles of the face, eyes, especially the eyelids and eyelashes. At night, Demodex mites appear to feed on dead skin cells, lay eggs, and discharge residue (also known as mites) into the eyelid glands, eyelash follicles.

Normally, Demodex mites that appear naturally on the skin in small amounts are not only harmless but also beneficial. Because they remove dead cells and cause no harm or symptoms.

However, when the number of mites is increased, it can cause significant damage to the skin and eyes such as dry skin, redness, itching or eczema, blepharitis, oil gland damage at the edges of the eyes, meibomian glands, stigmas fungal skin …

Symptoms of Demodex blepharitis are itchy eyelashes and surrounding skin; rough, scaly patches of skin; redness of the eyes and around the eyes; burning sensation inside the eyes …

Worse, the eyelash will dry out, stick to the eye and eventually cause it to grow abnormally. Blepharitis affects up to 45% of the population in the US and can be caused by other causes such as obstruction of the oil glands at the base of the eyelashes.

Demodex tick blepharitis is often not visible to the naked eye, making it difficult to detect it on its own. Photo: Freepik.

The American Ophthalmology Association AOA) says blepharitis is usually not contagious. However, Demodex ticks can jump from sick to healthy people and from animals to humans. If you are in close contact with someone with Demodex blepharitis, your risk of infection is very high.

Therefore, we should not use the same makeup, especially the eyes such as mascara, eyeliner, eye cream, eyeliner … In addition, you should also limit the use of oil-containing products because it is easy to create the environment. for ticks to grow, clogging pores. Every day, we need to maintain the habit of washing face 2 times, gently clean the eye area with water, dry and remove debris, excess oil.

Ticks are very small in size, not visible to the naked eye, so if you have eye problems, you should get checked for early detection and timely treatment.