First, we need to know what hyaluronic acid is.
Hyaluronic acid, scientific name hyaluronic acid, is an acidic mucopolysaccharide. It is an important basic substance for skin hydration and a component of human body. It has special water retention function, and its weight is as high as 100 times of its own weight. It is the best moisturizing substance found in nature at present and is called the ideal natural moisturizing factor. It can improve skin nutrition metabolism, make skin soft, smooth and wrinkle-free, increase elasticity and prevent aging. It is also a good transdermal absorption promoter while moisturizing. Combined with other nutrients, it can play an ideal role in promoting nutrient absorption.
Hyaluronic acid has become a classic ingredient of skin care because of its good skin care effect, and has been added to many skin care products. Most skin care products with moisturizing effect on the market have it.
Therefore, from the composition of hyaluronic acid itself, it will not cause any harm to the body, but it is very effective for the skin (of course, this refers to real hyaluronic acid). So why do many people report that it is harmful after long-term use?
In fact, there are two situations, one is that the hyaluronic acid selected at the beginning is inferior or the use method is problematic. Generally, hyaluronic acid stock solution skin care products provide high concentration and need to be used with emulsion or essence. Sometimes, if hyaluronic acid is used alone, it has no direct moisturizing effect, and even because hyaluronic acid absorbs a lot of water from the skin, it will make the skin drier after use. Therefore, the correct usage is: after washing your face in the morning and evening, you only need to apply the mixed hyaluronic acid product to your face, and then apply moisturizing cream to lock the moisture. This will be more effective.
Another is that there is no problem with the use method and quality of hyaluronic acid, but due to long-term high-frequency use, the skin produces antibodies, which leads to some problems. Therefore, it is suggested that we should grasp the amount, amount and scientific skin care with any skin care products.
What harm does Xiao Wei bacteria have in using cosmetics containing hyaluronic acid for a long time?
It's really ridiculous to see this problem. You can even say that hyaluronic acid has no effect, but it is alarmist to say that it is harmful. Hyaluronic acid, scientific name sodium hyaluronate, belongs to skin conditioner and is an acidic mucopolysaccharide. It naturally exists in the corneal skin of human skin, so if what you have is harmful to you, it is really terrible.
Hyaluronic acid can absorb 1000 times its own weight of water, and its moisturizing effect is first-class among many ingredients. Immediately after use, a thin film is formed on the skin surface to make the skin smooth and moist, and at the same time, it can prevent water from losing through the epidermis, repair the keratin barrier, and make the skin no longer feel dry and tight. It can also improve skin nutrition metabolism and prevent skin aging.
However, the effect of hyaluronic acid for external use is difficult to take effect, because only a small part can be absorbed by the skin, so injection of hyaluronic acid can make you see the effect in a short time. However, injections cost a lot of money, and the amount is not well controlled, so it is not good to have a stiff face. Therefore, people who have no money and are afraid still use hyaluronic acid as their daily moisturizing. Don't expect too much.
Hyaluronic acid of Sun Society is good. You can apply the mask first. Hyaluronic acid and hydrating mask are absolutely a perfect match, but it should be noted that if the mask is not so moist, take off the mask and don't suck back the moisture in the skin. You can also make a base before makeup, so that the base makeup will be more docile and shiny. Making a base before lipstick can relieve lip lines, make your mouth look fuller, and lipstick will not stick.
Elaine hyaluronic acid essence is a domestic brand, and the factory is Freda. This factory supplies hyaluronic acid raw materials to major brands around the world, and all of them are owned by L 'Oreal Estee Lauder Group, so the quality is very trustworthy.
There is an advantage in price, the bottle feels good, the texture is relatively thick, and hyaluronic acid is like this. In fact, a little bit can be applied to the whole face, which feels good and has a good moisturizing effect. The student party can try this. There are many kinds of hyaluronic acid in their family.
Hyaluronic acid has high clinical application value. All kinds of ophthalmic lens implantation, corneal transplantation, glaucoma surgery, arthritis, accelerating wound healing, moisturizing and so on. It has no side effects and can be used safely.
In beauty, hyaluronic acid is the best moisturizing substance found in nature at present, which can improve skin nutrition metabolism, make skin soft and smooth, wrinkle-free, increase elasticity and resist aging.
Adding hyaluronic acid to cosmetics;
It can form a breathable film on the skin surface, which can not only make the skin smooth and moist, but also block the invasion of foreign bacteria, dust and ultraviolet rays and protect the skin from harm.
It can tighten skin, penetrate deep into dermis, slightly dilate capillaries, increase blood circulation, promote skin absorption, eliminate wrinkles and delay skin aging.
It is a good natural moisturizing ingredient with good compatibility and can be added to almost any beauty cosmetics.
If you don't consider injecting micro-plastic surgery, the biggest harm of long-term use of hyaluronic acid (hereinafter referred to as hyaluronic acid) is to spend money. Labeling products containing hyaluronic acid is generally more expensive.
Hyaluronic acid will be synthesized in large quantities by human cells. For example, the main component of eyeball lens is hyaluronic acid-water complex. Hyaluronic acid has great influence on the normal physiological function of human body, Such as prevent cell adhesion, lubricating joint, etc. ....................................................................................................................................................., as a substance widely existing in human body, can be considered safe for external use in small doses.
Generally, low molecular weight hyaluronic acid is mostly used for external use, and its main function is to absorb water and moisturize. Hyaluronic acid has excellent water absorption, which can reach more than 1:400. As a skin care product, it can really lock the moisture on the skin surface.
But the effect of hyaluronic acid for external use is only a little bit, and glycerin can also moisturize. The price of cosmetic grade low molecular weight sodium hyaluronate is absolutely not more than 10 yuan/g. The final concentration of hyaluronic acid in skin care products is generally 0. 1-0.5%, but the nominal price of products using hyaluronic acid. .....
The application of hyaluronic acid in cosmetics is mainly based on its water-locking characteristics, which has little effect on human body from the perspective of external use, but in fact, the biological significance of hyaluronic acid in vitro is not great, and the theme propaganda is greater than the actual effect.
Hyaluronic acid is loved by many women because of its powerful water locking function. Then, hyaluronic acid is added to the cosmetic varieties. Does long-term use of cosmetics containing hyaluronic acid harm the skin? To understand this problem, we must first understand what hyaluronic acid is and what cosmetics containing hyaluronic acid are like.
1. What is hyaluronic acid?
Hyaluronic acid is a natural component of human body, which plays a role in maintaining collagen in human body and carries high moisture, so hyaluronic acid is a natural moisturizing component. From this perspective, hyaluronic acid is very safe. This is also the case when hyaluronic acid is added to many cosmetics and skin care products.
2. What are the hazards of long-term use of cosmetics containing hyaluronic acid?
Although hyaluronic acid is a natural hydrating substance, it does not mean that cosmetics containing hyaluronic acid will definitely play a role in hydrating. Because hyaluronic acid in both beauty hospitals and cosmetics is processed, the quality and efficacy of hyaluronic acid produced by different manufacturers are different. When you can buy all kinds of products containing hyaluronic acid, you must choose products produced by regular manufacturers.
Hyaluronic acid can replenish water, so it won't do any harm to use cosmetics containing hyaluronic acid for a long time. It's just that long-term use of cosmetics is bad for the skin.
Therefore, it is recommended that women who love beauty use cosmetics as little as possible, but skin care products containing hyaluronic acid can be used. Skin care containing hyaluronic acid can replenish the needed water for the skin, but before using hyaluronic acid products, you should pat the skin with enough water to make hyaluronic acid absorb and retain water to a greater extent.
Instructor: Li Yulan, Deputy Chief Physician of Plastic Surgery, First Hospital of Lanzhou University. He is good at surgical treatment of congenital cleft lip and palate, rhinoplasty, breast augmentation and early repair of hand injury.
Hyaluronic acid is an excellent moisturizing ingredient and has no harm to the skin!
Hyaluronic acid is one of the components existing in human skin, which has excellent affinity with skin and hardly causes allergies. The main function of hyaluronic acid is to absorb and catch water, which can absorb 500- 1500 times of its own water, and at the same time firmly lock the water. In the case of low humidity, hyaluronic acid has strong water absorption ability, but it is weak in high humidity environment, which can just meet the needs of skin moisturizing.
Hyaluronic acid molecules are large and small. Small permeability is stronger and can play a role in the cracks of stratum corneum. Macromolecules have strong water retention ability, which can better grasp the skin moisture. Usually skin care products combine hyaluronic acid with different molecules to achieve the best moisturizing effect. No matter what kind of molecule, it can't pass through the stratum corneum, and it won't enter the dermis of the skin to play a role.
If you want hyaluronic acid to enter the dermis, only by injection, such as the popular water needle injection. There is also hyaluronic acid filling, which is also one of the good ways to improve skin wrinkles and can effectively support the skin.
Cosmetics are harmful things in themselves. Think about it. At the earliest time, who would smear something on his face that was not like a person or a ghost for a long time? At the beginning, cosmetics appeared to change the appearance of actors into what people wanted. Now? Whether you are an actor or not, you can buy a bottle on the street and take it home to make a uniform for your face as long as you want to wipe it. As everyone knows, there is a painful price behind the fire. Don't ask me why I think so, because I have suffered from cosmetics. I worked in a local intellectual property company for half a year last year. In the meantime, a female colleague of mine has been telling me about a cosmetic she is selling. The brand is Ji Cunxi, which may contain hyaluronic acid. Otherwise, my situation would not be so bad. After her eloquent persuasion, I liked her a little, and finally agreed to buy six bottles of facial cleanser and four boxes of facial mask from her, and * * * paid her 640 yuan. Oh, my God! This damn thing lied to me! At the beginning, I wanted to hook up with her because I just had money in my hand. I promised her to buy a set meal without much thought, but it made my hard-earned money suffer. After using her cosmetics, her face began to itch especially, and finally her face was covered with pimples. I went to the clinic and bought more than 200 yuan of medicine to treat my face. I was so angry. My hard-earned money of nearly 1000 yuan was wasted. The important thing is that I have never touched her hand, let alone brought her home. Aren't you obviously cheating your colleagues out of money to make yourself rich? I hate her! ! ! Therefore, take my advice, long-term application of cosmetics will definitely do harm to your face, and in serious cases, it may disfigure your face. I am a person who has been hurt by cosmetics. Especially cosmetics containing hyaluronic acid, think about it. Generally speaking, both acid and alkali can do harm to human body, not to mention close contact with one's face. Isn't it obvious to push yourself into the fire pit? Haha, hope to adopt.
At present, many cosmetics on the market are named "hyaluronic acid". What contains "hyaluronic acid stock solution", "hyaluronic acid essence" and "hyaluronic acid mask" ... but it doesn't really have hyaluronic acid components and hyaluronic acid effects. My attitude is still in doubt.
Hyaluronic acid has a powerful function of filling and shaping, replenishing water and rejuvenating skin. Hyaluronic acid is a very common maintenance method in medical beauty. In principle, macromolecular hyaluronic acid is used externally and small molecular hyaluronic acid is taken orally. Hyaluronic acid for external skin care is the largest molecule, which has the property of blocking moisture and can be injected into the dermis of the skin to moisturize and renew the skin.
However, the above functions I mentioned are all at the level of medical beauty. Hyaluronic acid stock solution used for medical beauty belongs to medical supplies, while cosmetic supplies belong to beauty supplies. Their preparation, concentration, function and effect are quite different. Hyaluronic acid in cosmetics is free, so it is easily absorbed and decomposed, and it is usually metabolized and absorbed in about one day.
If cosmetics really contain hyaluronic acid, it can only be a basic moisturizing effect, which may not give you a magical hydrating experience.
There won't be any harm. Hyaluronic acid is a good humectant.