Skin science, in-depth understanding of skin
Before skin care, if we have basic knowledge of skin science, we will have a clearer understanding of the concept of skin care.
The skin is the largest organ in the human body, helping us resist external invasion and sense and block the external environment. The skin is mainly divided into three major structures from the inside out, namely subcutaneous tissue, dermis, and epidermis;
The subcutaneous tissue is the lowest layer of the skin structure, and the main function of this layer of adipose tissue is to help the body insulate from temperature, store energy, and maintain body temperature. Half of the total fat in the human body is actually located in the subcutaneous tissue.
The dermis, as the core of the epidermis system, contains sebaceous glands, sweat glands, hair follicles, nerves, blood vessels and other structures. The "collagen" that everyone often hears is a protein in the dermis, and the elasticity and toughness of the skin comes from it. this.
The epidermis has an important barrier function. Most skin care products are designed to meet the needs of the epidermis. Although the epidermis is divided into many layers, we must understand the stratum corneum and sebum film. This is why the skin feels "dry." ” source.
The stratum corneum - the main barrier in the skin, is composed of keratinocytes and interstitium like a brick wall. Under healthy skin, the natural moisturizing factors in the stratum corneum will maintain skin moisture retention. On the contrary, when the stratum corneum is damaged, natural moisturizing factors will When the factors are reduced, the skin will appear dry or even peeling.
Sebum film - a film composed of sebum secreted by sebaceous glands, lipids produced by keratinocytes, sweat secreted from sweat glands, dust in the air, bacteria, etc., is also located on the outside of the stratum corneum, although to the naked eye Invisible, but it covers the entire skin surface. In addition to the most important thing of preventing water loss and maintaining skin elasticity, it can also block bacteria and foreign substances.
(We often say that excessive cleansing is bad for the skin, because we worry about excessive damage to the sebum film and skin barrier)
Why is oil-water balance the key to healthy skin?
Oil-water balance is an ideal state for skin. As the name suggests, when skin oil secretion is normal and the stratum corneum contains sufficient moisture, problems such as excessive greasiness and dryness will be less likely to occur.
In the process of pursuing oil-water balance, replenishing water and replenishing oil, the most easily overlooked thing is "replenishing oil". Because many times, we think that oily skin means controlling oil and removing oil, and dry skin means desperately replenishing water. But in fact, oily skin also needs to replenish oil, and dry skin needs the help of good oil. There are several key points. share:
-
Most skin problems are caused by an imbalance of oil and water
Dryness, greasiness, sensitivity, scaling and peeling, pore problems, etc. are all problems derived from the imbalance of oil and water. This also directly shows that,
The pursuit of "oil-water balance" is the key to maintenance. -
Many Oily Skin Facts: Oily on the outside and dry on the inside
Although skin characteristics are mostly related to body constitution or environment, the face often overproduces oil. The fact is that when the skin is not truly moisturized and is too dry, it overproduces oil for protection, which is caused by "oil-water imbalance." Skin troubles. -
Frequently hydrating, but unable to achieve long-lasting moisturizing and improve long-term dry skin problems
When the skin does not have enough oil protection, it will be easily lost no matter how much water is given. Therefore, the key "oil replenishment" is the fundamental way to improve some skin problems.
Understanding the science of skin, and even the balance of oil and water, can make skin care more effective with less effort. By truly learning how to identify skin conditions and how to choose appropriate and necessary nutrients for your own skin.
