Keratin, an important chemical component of stratum corneum, is a hydroxyl fatty acid containing 16 ~ 18 carbon.
The stratum corneum is often divided into two layers, which are close to the outer wall of epidermal cells and are keratinized layers composed of keratin and cellulose. Outside the cell wall is a thin stratum corneum, which is composed of keratin or mixed with wax.
The thickness of stratum corneum is greatly influenced by the environment. Leaves grown under drought and sunshine conditions have thicker cuticle and more wax. But when it grows in water or wet environment, it is very thin or even not at all.
Normal and healthy skin does not need special exfoliation work.
When the metabolism of keratin is slow, even when the skin is sick, not only will the skin appear uneven, dull and poor in 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 peeled off long ago.
Conversely, excessive exfoliation can also cause skin damage.
Extended data:
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.
As for oily skin, especially in summer, it is easy to produce oil, and the speed of keratin production will be faster than that of dry people, and it can be done 1~2 times a week. If you have mixed skin, oily T-shape and chin can be treated with oily skin.
In the maintenance step, facial exfoliation should be carried out when the face is clean and the face still retains moisture.
Exfoliation must be gentle and smooth slowly by drawing small circles, with an area of about 7~ 10. After exfoliation, rinse with clear water before maintenance.
The maintenance work that must be done after exfoliation of the face includes moisturizing and sun protection (if going out). For sensitive skin, it is recommended to use skin care products that help relieve before moisturizing.
In addition, the products and methods used for neck exfoliation should be consistent with facial skin.