The stratum corneum is the first natural barrier of our human body, which can be divided into the following aspects:
1, electricity-proof. The stratum corneum is a poor conductor of electricity and has certain resistance to low voltage and low current. The resistance value is influenced by skin, sweat gland secretion and excretion activities, mental state and climate, especially the moisture content of stratum corneum and its surface humidity. The resistance value is inversely proportional to the amount of moisture, that is, the resistance value to the skin is higher when it is dry than when it is wet, and the conductivity is low.
2. The ability to absorb light. Most ultraviolet rays are absorbed by the epidermis to protect the organs and tissues of the body from sunlight. Artificial removal of the stratum corneum will inevitably expose the skin tissue to the sun.
3. Protection of body skin. The stratum corneum is the surface layer of skin and the layer of dead cells. This is a very thin stratum corneum membrane, about 0.02 mm thick, but it has an important protective effect on the body. We touch the detergent with our bare hands, and the detergent cannot penetrate into our skin. This is because the stratum corneum plays its barrier function. In addition, it can also prevent the water in the body from evaporating outward.
Extended data:
Normal and healthy skin does not need special exfoliation, but when the keratin metabolism is slow, even when the skin is sick, it will not only make the skin look uneven, dull and have poor water retention, but even skin care products are not easy to absorb, so it is necessary to use some methods to remove the old waste keratin that should have fallen off a long time ago.
Conversely, excessive exfoliation can also cause skin damage.
Excessive skin shedding will dry out, and redness and itching will be more obvious.
In addition, many people are afraid that the more skin falls off, the thinner it will be. In fact, keratin is only the first layer of epidermis, and it will not make the skin thinner because of long-term exfoliation. Unless you really go too far, it will make your skin thinner.
First of all, you should know your facial skin.
If the skin is dry or sensitive, it doesn't matter if you don't exfoliate it. If you want to do it, remember to choose a mild exfoliating product and do it once every 1~2 weeks.
If you are worried about the allergic reaction caused by exfoliating products, you can first find a professional dermatologist, or use it on the inside of your elbow first, and then use it on your face when there is no allergic reaction.
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