Why moisturize? Are you really moisturizing right? Take you through the key elements of moisturizing

Moisturizing is a very important part of skin care, Thermage FLX almost all doctors will tell you that "cleaning, moisturizing, sunscreen" is the most basic and most necessary skin care work. However, there are hundreds of moisturizing products and moisturizing ingredients on the market at present, leading to the concept of moisturizing often fog brake or there is a great misunderstanding!

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Why is moisturizing important?

Four processes of keratin formation:

Keratinocyte process

Horny lipid process

Natural moisturizing factor process

Desquamation process

What happens if you don't moisturize? When should you moisturize?

Why is moisturizing important?

Let's start with the most basic skin physiology and tell you why you should moisturize. The skin's natural moisturizing ability is mainly derived from a thin sebum film secreted by the sebaceous glands outside the stratum corneum, as well as natural moisturizing factors and lipids naturally produced in the metabolism of keratinocytes.

Sebaceous glands secrete sebum at the opening of the epidermis. Sebum naturally diffuses throughout the skin, forming a "seal" that reduces evaporation. Such as triglycerides, wax esters and fatty acids are the main components of sebum.

The outermost layer of the skin is a thin stratum corneum, made up of dead keratinocytes. Although the stratum corneum is a dead cell, it plays an important role in the outermost layer of the skin, one of which is moisturizing.

If there is no skin, the moisture of the human body can soon be lost and lead to death, so before you talk about moisturizing, you must first understand how "keratin" works, and ensure that you no longer feel that it is just a layer of dead cells, but that you should be grateful and praised every day!

Why moisturize

Four processes of keratin formation:

Each process has an important physiological significance and is briefly explained in sequence

Keratinocyte flow:

At the base of the epidermis is the basal layer, and deeper into the basal layer is the dermis. The basal layer will differentiate into keratinocytes. In the process of differentiation and movement, some components of the cell are gradually spit out and then gradually thin. Eventually, even the nucleus disappears, forming a flat keratinocyte without a nucleus.

Basically, keratinocytes are dead cells, but they are responsible for the important job of blocking the invasion of external bacteria, viruses, dirt, and moisture. The blocking effect is self-evident, but why do keratinocytes retain water?

Keratin lipid process:

During the process of keratinocyte formation, keratinocytes will gradually secrete some of the oil components contained in the keratinocyte, filling the stratum corneum between the cells.

Natural moisturizing factor process:

Keratinocytes also secrete more natural moisturizing factors, which are also stored in the keratinocytes.

These naturally occurring lipids contain ceramides, fatty acids, cholesterol, and triglycerides. Natural moisturizing factors include various amino acids, salts, carbohydrates, lactic acid, PCA, chlorine, sodium, calcium, magnesium plasma, and urea. Lipid components prevent water loss, and natural moisturizing factors hold water between the cuticle layers, which act like "bricks" and "cement" when combined with the physical barrier of the keratinocytes themselves, becoming the outermost barrier of the human body.

Desquamation process:

The production of keratin is a natural cycle. When new keratin is produced, old keratin is metabolized. Moisturizing well is not good, it involves the natural flow of desquamation. If the stratum corneum is moisturized well, the cell desmosomes can decompose normally, and the shed stratum corneum will be very, very detailed, almost invisible to the naked eye. If the moisturizing conditions of the stratum corneum are insufficient, the cell desmocles can not be broken down normally, there will be a whole piece of keratin shed, and the naked eye can see obvious dandruff.