1. What is hyaluronic acid?
The human body itself has hyaluronic acid.
Full and elastic skin depends on it.
Open the white list of cosmetic raw materials, there is no ingredient called "hyaluronic acid" at all. Why is this happening? In fact, the HYALURONICACID we often say is hyaluronic acid, and the English name is hyaluronic acid. Because the earliest hyaluronic acid was extracted from bovine vitreous, it was translated into hyaluronic acid after entering the market. Han Xuefeng, deputy chief physician of Plastic Surgery Hospital of China Academy of Medical Sciences, said in an interview with Science and Technology Daily that hyaluronic acid is an inherent component in the human body, and the hyaluronic acid in the human body will be updated every 48 to 72 hours, which means it will be completely metabolized and regenerated.
Hyaluronic acid in connective tissue and dermal tissue of human skin can not only maintain skin elasticity, but also store moisture, increase skin volume and make skin look full, plump and elastic. Baby's skin contains hyaluronic acid 20 times higher than that of adults, so baby's skin looks full and smooth. If the content of hyaluronic acid in a 20-year-old human body is defined as 100%, the content of hyaluronic acid in the human body will drop to 65%, 45% and 25% respectively when people reach the age of 30, 50 and 60. Therefore, the content of hyaluronic acid in skin is very important to the appearance of skin.
Injection of hyaluronic acid is better than smearing.
But they can't resist aging once and for all.
Some hyaluronic acid on the market is used for injection, and some hyaluronic acid can be smeared. Is there a difference between the two? Hyaluronic acid can be divided into medical injection hyaluronic acid and cosmetic hyaluronic acid. Han Xuefeng said: "Hyaluronic acid for medical injection belongs to drugs, and hyaluronic acid for skin care belongs to beauty and skin care products."
Hyaluronic acid for injection is only used after crosslinking in clinic. According to the cross-linking degree or molecular size of hyaluronic acid raw materials, various models are made to meet the different requirements of facial plastic surgery, with different timeliness and functionality. As far as timeliness is concerned, different kinds of hyaluronic acid can last for 6-24 months, and then it will be slowly metabolized out of the body. As far as functionality is concerned, different kinds of hyaluronic acid have different functions of moisturizing and rejuvenating skin, removing wrinkles, filling or supporting plastic molding. Hyaluronic acid in cosmetics is uncrosslinked or slightly cross-linked, which has a short-term moisturizing effect and lasts for about 2 ~ 3 days.
"At present, hyaluronic acid can only improve facial rejuvenation and delay the process of aging in a certain range and time, but it can't stop it, nor can it resist aging once and for all." Han Xuefeng stressed.
Injection beauty is not suitable for everyone.
Once it enters the blood vessels, the consequences are very serious.
It seems that the injection of hyaluronic acid has quick effect and long duration, and it seems to be the best product for hydrating, wrinkle removal and plastic surgery, but the risks that need to be taken when accepting hyaluronic acid injection should not be underestimated.
Han Xuefeng said that medical practitioners in regular hospitals can accurately judge the positions of blood vessels and nerves and avoid them when injecting hyaluronic acid after strict and systematic training. Because once hyaluronic acid is accidentally injected into blood vessels, it will enter the ophthalmic artery with blood flow like sand, causing embolism. As the saying goes, "it is easier to scatter sand than to pick sand". Once there is a problem with injection, the prognosis will be very poor.
In view of the frequent medical accidents caused by injection of hyaluronic acid in recent years, Han Xuefeng explained that there are two main factors in the cosmetic disfigurement of hyaluronic acid at present. One is that many beauty institutions don't have medical qualifications, and the operators don't have relevant medical knowledge at all, and they don't know the structure of human face and eyes at all. It is easy to inject hyaluronic acid that should be injected into subcutaneous tissue directly into blood vessels; The other is that the hyaluronic acid used by these illegal institutions or individuals is fake.
In addition, not everyone is suitable for injecting hyaluronic acid, such as pregnant women, lactating women, people with multiple severe allergies, people with abnormal coagulation mechanism, people with active skin diseases, inflammation and infection. Not suitable for injection.
2. Matters needing attention in injection of hyaluronic acid
1. Keep your skin clean before injecting hyaluronic acid, and any cosmetics and skin care products need to be cleaned. It is recommended to use facial cleanser and astringent water to clean the skin. Wash and shrink pores with cold water. It is strongly recommended that patients should not take anti-inflammatory drugs (aspirin) 3-4 days before treatment, because it may aggravate the bleeding and swelling at the injection site of hyaluronic acid.
2. Avoid facial massage, sleeping, leaning forward and exercising within 4 hours after hyaluronic acid face-lifting. Keep a straight posture for at least 3 hours after hyaluronic acid thin face.
3. Within 48 hours after injection, keep the injection position still, do not touch or press, and avoid frequent movements of facial muscles such as laughing and crying, so as to keep the filler evenly distributed at the injection site.
4. Never apply any cold or hot compress to the injection site, which will change the fixed hyaluronic acid.
5. Try not to do strenuous exercise in the short term after injection to prevent accidents.
6. Pay attention to the implementation of certain maintenance care after injection, but be careful not to massage the injection site.