How to manage skin scientifically

The most important function of skin is to protect you. It has three main functions: barrier function, sensory function and metabolic function.

Two misunderstandings of skin cognition

1. Skin doesn't care about breathing. For people, lungs are respiratory organs.

2. The skin is not responsible for absorption, especially active absorption. It is not so smart, it can't tell what is good, it needs to absorb more, and it has to guard against what is bad. Human skin has only a little limited permeability, and all skin care products actually use this little permeability to play a role.

Three things to do to keep good skin.

1, keep good habits and be in a good mood.

2. Exercise can help us to strengthen our physique.

Strong muscles and well-proportioned subcutaneous fat are important supports for the skin. Exercise can also promote blood circulation and clean up metabolic waste in time. People who have always maintained their exercise habits usually have a good complexion and younger skin. In addition, exercise can also promote the production of skin collagen, so exercise can supplement collagen and maintain skin elasticity more than eating pig's trotters.

3. A healthy and balanced diet.

First of all, we should control the intake of spicy food with high oil and sugar. These foods will stimulate the excessive secretion of sebum and change the composition of sebum, which is an important factor in the occurrence and aggravation of acne.

In addition, the intake of sugar must be controlled. Nowadays, many girls eat fruit as a meal. They think that fruits are nutritious, rich in water and vitamins. It must be good for the skin after eating it.

Doing so is not only not helpful to the skin, but harmful. The content of sugar in fruit is very high, and too much sugar will saccharify with collagen of skin, resulting in dull skin color. Understand this principle, you have to control coke, juice, dessert and so on.

Therefore, it is more important to avoid the pit of high oil and sugar and spicy stimulation than to study what supplements can make the skin better. Not eating or eating less is also a positive skin protection and management.

Don't exfoliate frequently. The stratum corneum is the most important defense layer of the skin itself, which prevents all external substances and harmful bacteria from entering, and at the same time, substances inside the skin, especially moisture, are not easy to lose out.

Drying and ultraviolet rays are two major culprits that lead to accelerated skin aging.

The scientific way to deal with dryness is not to replenish water, but to moisturize it. How to enhance the skin's own moisturizing ability, the key point is to strengthen the lipid molecules and moisturizing factors in the stratum corneum, so as to prevent water from easily losing. Our common face cream can help us to moisturize well.

Sun protection should pay attention to the following points:

1. When the sun is too big, try not to get sunburned. Even if you wear sunscreen, you have a chance to get sunburned.

2. Physical shading, in fact, the sunscreen effect is very good. Long-sleeved shirts and umbrellas are more useful than sunscreen.

3. To learn to look at the sun protection index, there are generally two values on the package: SPF and PA.

The higher the SPF value, the stronger the sunscreen ability, SPF50 is high-power sunscreen, SPF20 is medium sunscreen;

PA values are marked with a plus sign. Because the technology of skin care products against long-wave ultraviolet rays is not as mature as that against medium-wave, so try to choose as many plus signs as possible. China stipulates that the maximum number can be three plus signs.

4. For a long time outdoors, try to choose products with high sun protection value, and all exposed skin should be smeared. It needs polishing once in a while.

5. Daily commuting, the amount of ultraviolet rays is not particularly large, and products with moderate sun protection are enough. There is no need to pursue high-power sun protection.

6. The latest research found that air pollutants will greatly enhance the oxidative pressure of ultraviolet rays on the skin, and special attention should be paid to sun protection in foggy days.

Basic skin care, a clean facial cleanser, a moisturizing moisturizer and a sunscreen are actually enough, which is the basic configuration of a person's skin care.

No matter what you buy, it is safer than the sky.

First, three products are absolutely unnecessary.

No matter what your best friend recommends, say how well she uses it. Don't use it without products and homemade secret recipes. On the packaging of the three products, the manufacturer information, production date and license number cannot be found.

Second, chemistry is actually very safe, and naturally it is not necessarily safe.

You may often hear many people say, "chemistry is unsafe, but nature is safe." Some businesses will take advantage of your weakness that you may not be familiar with chemical knowledge to demonize chemistry, thus stimulating consumption. But it is unscientific to set chemistry against nature.

The so-called pure natural substances are also composed of molecules with clear chemical structure. If we clearly know what the molecules in a substance are, and the structure and properties can be clear, we can systematically study the safety of components through scientific methods.

Some products claim to be free of essence, pigment, preservatives, minerals and alcohol. It seems that without these things, the product will be extremely safe.

In fact, the safety of these chemicals has been verified by long-term rigorous scientific experiments, and there are also clear usage methods and dosage regulations. As long as it is used reasonably, it is safe.

Besides, think about it, a bottle of cream takes three to six months. If it was not well preserved, the product would have gone bad and hairy long ago.

Third, stop using products that make you uncomfortable.

At present, some products unilaterally pursue the so-called powerful effect, and the concentration of some ingredients will be particularly high. Remember, as long as you feel uncomfortable, itchy, tingling and red, no matter how much you spend, the wisest thing to do at this time is to stop using it quickly.

In addition, once the skin care products are opened, use them up as soon as possible. It is generally best to use it within six months. When the seal is opened, the product will be exposed to an environment full of microorganisms. Our skin care products have enough moisture and rich organic matter, and they are placed at room temperature. Together, these three things are a paradise for microbial reproduction.

After skin care products are bought back, it is best to store them at room temperature, in a dry and dark place. Some people think that fruits can be kept fresh in the refrigerator, and skin care products are so expensive that it must be better to put them in the refrigerator. In fact, this is a big misunderstanding. Unless otherwise specified, skin care products must not be put in the refrigerator.

Long-term low temperature will accelerate the water-oil separation and deterioration of skin care products. The result will not only shorten the life of your product, but also shorten its life.