News

We are every day by Amway, L 'Oreal, SKII, Estee Lauder and other skin care products grass weeding, but we really understand their own skin?

Let us understand the professional knowledge of facial skin, so that we can accurately understand our skin, and choose skin care products that suit us according to skin problems and characteristics.

The skin is divided into three layers: the skin is roughly divided into epidermis, dermis and subcutaneous tissue from the outside to the inside.

The epidermis is only 0.2mm thick. It has five layers called the five brothers of the epidermis, including the stratum corneum, the transparent layer, the granular layer, the spinous layer and the basal layer;

epidermal role of five brothers:

1, big brother stratum corneum: protect the brothers, belongs to the outermost layer of the skin, it can protect the skin, lock moisture, resist friction, chemical substances within the invasion; The stratum corneum is too thin to be sensitive, red blood, spots, too thick stratum corneum skin care products are not easy to absorb, the skin is dark, rough, no luster;

2, two brothers transparent layer: also has a certain protective effect, can control skin moisture, prevent water loss and excessive entry. (The transparent layer only exists in the palms and soles of the feet. So the transparent layer of facial skin you often hear has no practical meaning.)

3. Three Brothers Granular Layer: It can neutralize acid and alkali substances, balance moisture, filter ultraviolet rays, and prevent foreign body invasion.

4. The four brothers have spinous layer: it is the thickest layer in the epidermis, with high water content, delivering nutrition to the epidermis and nourishing the epidermis.

5. Brother Basal Layer: It is composed of base cells and a small amount of melanocytes (melanocytes secrete melanin to determine the color of skin). Basal cells are the "birthplace" of skin cells. It is the key to self-repair and renewal of skin. Cells in this layer continue to divide, gradually move upward, keratinize and deform, forming cells in other layers of epidermis, and finally keratinize and fall off. The whole process is 28 days, called the metabolism of the skin. The strong regeneration ability of the basal layer is a feature of young skin. On the contrary, if his regeneration ability is low, it is an important manifestation of skin aging.

It is closely related to the scar, when the skin is injured, does not reach or small area to the basal layer, the wound will fully recover, no scar. If a large area of the basal layer is injured, it will leave a scar.