Mask answer questions

What the students say most is whether the mask can be used for beauty. This time, we will talk about the function of facial mask.

Simply put:

Specifically, most masks used in China are patch masks. This mask was first invented in 1993, and entered the China market around 2000. Now the annual sales volume is about 10 billion to1200 million RMB, which has been growing at a high speed in the past few years, with an annual growth rate of over 24%. 95% of China women aged 20 to 50 have used facial masks within six months. These are the approximate data of China.

But this is not the case in Europe. In the same age group, only 16% of women have used masks in the past six months, and even less in the United States, only 7%.

Therefore, the mask is a bit like animation, or like plastic surgery culture, which is a regional consumption boom led by China, Japan and South Korea.

The ultimate appeal of female facial mask is to make the face look better, fuller and rounder, without wrinkles.

The quality of skin consists of several factors:

First, whether the skin is infected;

The second is whether the pores are blocked;

Third, whether the water is sufficient;

Fourth, whether sebum secretion is appropriate;

Fifth, it is the metabolism of cells.

If these five factors are well maintained, there may be an overall effect of blowing bombs and breaking them.

However, the mask can only partially alleviate the third and fourth problems, and other problems cannot be solved.

All countries have restrictions on the functions of skin care products. Although there are some differences in the details of this restriction, the general principle is:

It can't be a drug, otherwise it must go through the test and approval procedures of drugs, which are complicated and expensive.

Therefore, all skin care products can only work on the epidermis.

If there is propaganda that its ingredients have reached the dermis, then this kind of thing can only appear in places where medical supervision is not strict, otherwise it will be severely punished.

The surface layer of skin is epidermis, and the lower layer is dermis.

The thickness of the epidermis varies throughout the body. The heel may be 3 or 4 mm thick, and the palm may be more than 1 mm thick, but the part like the eyelid is less than 0.1mm. The epidermis can be divided into five layers, each of which has its own function, forming a defense line as a whole, protecting the body from external microorganisms and protecting the water in the body from being evaporated so quickly.

Therefore, the most basic function of this defense wall is to block, not to absorb. Otherwise, the skin will become small intestinal epithelial cells.

On this basis, most of the advertisements we see are about what plant extracts, amino acids and collagen can be absorbed. These statements are all lies.

Skin can only absorb water and some substances the size of water molecules, which is very inefficient.

How low is the absorption efficiency?

For example, we won't feel thirsty after swimming for hours, or we will definitely sweat after taking a hot bath, but you will definitely sweat hundreds of times more than the whole body skin absorbs the water in the bathtub, and the skin's water absorption efficiency is so low.

As I just said, the mask can only partially replenish water and regulate sebum. This is because the elasticity of skin is determined by the whole skin, which includes epidermis and dermis, and dermis also plays a major role here.

Mask can only affect epidermis, not dermis, so I say it only plays a part.

The moisture content of dermis is about 70%, which is relatively small. The reason why it is so stable is that the dermis is densely covered with capillaries, which naturally provides sufficient moisture for the dermis. But when it comes to the epidermis, there is no blood vessel distribution, otherwise we rub our hands, which means there is blood on our hands.

So the moisture content of the epidermis changes greatly. For example, in a particularly dry winter, the air-dried face has barbs, and the water content at this time may be only 5%. For example, just after the rain, the air humidity is particularly high. 90% of the time, the moisture content of the girl's epidermis can even reach 30%.

Most of the water in the epidermis permeates from the dermis, and the reason why it can permeate is because there is a power to absorb water actively. This is a large number of substances in epidermal cells, collectively known as natural moisturizing ingredients, NMF.

These components include various amino acids, CPA and various salts, and their proportion exceeds half of the total mass of epidermal cells. They form osmotic pressure, which makes the water in the dermis flow from below to the epidermis. When the epidermis and dermis are full of water, the skin appears moist.

How do you increase the moisture in the epidermis?

The most important thing is the external environment of epidermis.

In winter, it is dry and hot indoors, and the moisture in the epidermis evaporates very quickly. If you can drink enough water, the pool under the epidermis, that is, the water in the dermis, can be supplied continuously.

For the external environment, you can get a humidifier nearby. If there is no humidifier, you can use a small watering can and spray some water on your face from time to time.

And, of course, the facial oil that people often use. Its main function is to seal water, so in principle, as long as it is safe and odorless and does not change the color of the skin, it can be used as facial oil, which can play a role in moisturizing. Therefore, vaseline is the most important component of all face-wiping oils, which is not only the mass ratio, but also plays the biggest role in the effect. Other ingredients in those expensive facial oils are only psychological comfort at best.

For example, when we apply a mask, in those 30 minutes, the mask blocks the water evaporated from the epidermis, and a little water will penetrate into the epidermis from the gap in the stratum corneum. This is the hydrating function mentioned in the mask advertisement.

Full capacity of the mask

So how strong is the effect of mask hydration?

On 20 14, China Consumers Association entrusted the Cosmetics Technology Center of China Academy of Inspection and Quarantine to test 26 masks on the market, mainly from two aspects:

The first is safety, which depends on whether hormones are secretly added and whether prohibited ingredients are added to preservatives with antibacterial effects;

The second is efficacy, which only tests the moisturizing function, which also shows that the mask has no other quantifiable efficacy.

These 26 masks were all applied for 30 minutes, of which 17 would increase the skin moisture content by more than 10%, and the other 9 masks with less than 10% only increased by 1.3%.

More importantly, how long can this improvement last?

The result is that after two hours, only nine models can still maintain the added value above 10%, and after six hours, only three models can still maintain the added value above 10%. In other words, more than 2/3 of the masks have no effect after two hours of application.

Because of the influence of environmental factors and water content in dermis, epidermis will always return to its proper state.

The mask only has an effect of about two hours. After two hours, it should be wrinkled or wrinkled. Moreover, it does not mean that it is effective if it is expensive. At that time, only a few dollars did the best in the exam, and there were more than 190 dollars. Although there is no last place in the ranking, the moisturizing effect is only moderate.

Then why do you think there are three models that can keep the water content increase effect of 10% after 6 hours?

Mainly because the mask added more sealant.

As the saying goes, the ingredients of facial oil are added. The cheapest is to add vaseline or mineral oil. For better, you can add sheep oil, olive oil and squalane. If you are not sure whether the mask you are using has a particularly good moisturizing performance, then you can apply the face oil yourself and keep the effect for several hours.

These sealants actually play the fourth factor I mentioned at the beginning, and improve the effect of skin oiling. Some people just don't secrete enough sebum, so they have to let face oil help. this

These are roughly all the functions of the mask. Don't think about other substances, it is impossible to enter the skin.

Extra attention

Then let's talk about several other factors. One is whether the skin is infected. This is mainly caused by squeezing when squeezing acne. Don't squeeze it. Even if it is squeezed, it should be disinfected in a formal way after squeezing. The reason why you get acne is because your pores are blocked, so you should develop the habit of washing your face frequently.

The reason why the skin gradually loses its elasticity is related to aging. As we said before, part of aging comes from the body itself. It's only about age and genes. Irresistible, unable to adjust at present. Just accept it.

Another factor that causes aging is ultraviolet rays in the sun. A white-collar worker who has been in an office will have much better skin than an athlete. You can also apply sunscreen to avoid sunlight.

Some people may find it unbelievable to hear this, because some sisters around them really wear some kind of mask, and their faces will be smooth and look better.

So I'm going to leave this part at the end to emphasize:

All masks with similar effects should be very vigilant, because hormones are secretly added. These hormones include glucocorticoids and various sex hormones, especially glucocorticoids, which have a very direct effect.

For example, in the early 1990s, small advertisements for treating sexually transmitted diseases and condyloma acuminatum were posted on telephone poles all over the country. As a matter of fact, those itinerant doctors didn't prescribe any serious drugs for patients at all. They prescribed some unnamed pills, most of which were glucocorticoids.

They will immediately make the skin with inflammatory reaction fade away, giving people the feeling that, alas, this is a great doctor and I have to see him later. In fact, it actually delayed the illness.

For example, if we have acne, or acne is inflamed, it is also an inflammatory reaction, but the application of glucocorticoid will stop the body's self-protection mechanism, and bacteria will be unimpeded from now on. It seems nothing, but it actually leaves a bigger hidden danger. Hormone-dependent dermatitis will appear in the future, which is very itchy and very easy to get red and swollen. The end result is that you must always use that mask to relieve it.

This kind of skin patients have even accounted for about 20% of dermatology patients in big hospitals, and they are basically women who use masks for a long time.

I'm not saying this to scare you. It's not that there are some small possibilities in theory, but very common situations.

Just last year, the US Food and Drug Administration in Guangdong purchased 137 masks from major e-commerce platforms and WeChat merchant platforms, with prices ranging from several yuan to more than 200 dollars.

In the end, 24. 1% masks were secretly added with glucocorticoid, accounting for about 1/4.

This substance does not mean that the content exceeds the standard, so it is forbidden to use it. Moreover, hormone-dependent dermatitis can only be formed once every two weeks, and once it is formed, it takes about a year to cure.

So how to avoid buying such a mask?

That is, you bought serious products from big brands, not WeChat merchants. Of the 33 projects that went wrong in this spot check, 32 were produced by informal enterprises.

So finally, let's sum up:

The mask can only replenish water temporarily, and there is no other magical effect that can be quantified. Those masks that are effective as soon as they are pasted and cannot be separated in the future are basically unqualified products with glucocorticoid added, so be very vigilant because they are more difficult to treat.

Ok, this is the answer to the mask.

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