Popular Science 1 | The Physiological Structure of The Skin

Popular Science 1 | The Physiological Structure of The Skin


The first step of skincare is "cleansing", although this is very basic, it is the most important step in skincare! Many sisters people spend a lot of time and money on skincare every day, but they don't see their skin in good condition. Most of this is because of problems with the "cleansing" method. The right way to clean your face can make your skin look healthy and radiant, but the wrong way to wash your face will only accelerate the aging process of your skin. So what is the correct way to wash your face?


First of all, let's understand the physiological structure and metabolic process of the skin. Only by in-depth study and understanding of the structure and physiological role of the skin, we can prescribe the right medicine.


The skin is the largest organ of the human body and has seven physiological functions: protection, sensation, body temperature regulation, absorption, secretion and excretion, respiration, and metabolism. It is composed of 70% water, 25% protein, 5% inorganic salts, and fatty acids. Through the proportion, we can see that water is very important. However, in our facial skin, the proportion of moisture is 15%-20%. Generally, as long as the child's skin reaches 20%, if the moisture content of the facial skin is lower than 15%, the skin will be dry and fine. Texture, dull, etc.


The skin is composed of three layers: epidermis, dermis, and subcutaneous organizer. The stratum corneum is the outermost layer of the epidermis, which is mainly responsible for maintaining skin moisture. We emphasize not to damage the skin barrier when cleaning, which is the first line of protection for human skin, including the sebum film and stratum corneum.


The sebaceous membrane is a layer of membrane attached to the surface of the stratum corneum, which is formed by the fusion of sebum secreted by the sebaceous glands of the skin, lipids produced by keratinocytes, sweat secreted from sweat glands, and oil secreted by sebaceous glands in a certain proportion. Among them, under the action of external force, whether the sebum membrane is healthy depends on whether the secretion of sebaceous glands and sweat glands is balanced.


The sebum film is the most important layer for the skin to lock in moisture, which can effectively lock in moisture, keep it moist and lubricated, prevent excessive evaporation of skin moisture, and prevent dryness and cracking. At the same time, the sebum membrane is also the immune layer on the skin surface, which can prevent the infiltration of foreign substances and play a certain anti-infective effect. Some free fatty acids in the sebum membrane can inhibit the growth of some pathogenic microorganisms and have a self-purifying effect on the skin. The reason why some people have a rotten face when using certain facial cleansing devices is because of excessive cleaning, which destroys the sebum film wrapped on the skin surface, allowing some external microorganisms to invade the skin.

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