What causes the skin to be rough and dull?

Many girls say that their faces are not good, that is, their faces are dull and dull. So, what do you want to do to deal with rough and dull skin? Only after first understanding the reasons for the dull skin, the girls can carry out the skincare action of repelling dullness and yellowing. Let's take a look at the reasons for the dull skin. Find the reason to break the dull skin one by one!
Rough skin, dull skin, dark skin, skin retention, skin melanin
Cause 1. Excessive deposition of melanin in the skin
An important reason for the dull skin is that due to excessive deposition of melanin, this dullness is more common in the eyebrows of negligent sun protection. You can observe whether the skin color of the facial skin is darker than the color of the skin such as the arms and calves. If the sunscreen work is not in place, it will cause the skin to deposit melanin, and the skin will be damaged after the sun exposure. The skin surface is very rough to touch, and the face naturally becomes ugly. Therefore, the girls must do a good job of sun protection to prevent dull skin.
Cause 2, stratum corneum oxidation
The skin's stratum corneum oxidation is an important reason for the skin to look dull. It usually causes the formation of the stratum corneum, including the ubiquitous electromagnetic waves in life, long-term exposure to computer screens, smoking, lack of sleep, etc., which can lead to skin. Produces free radicals and causes aging of the stratum corneum.
Reason 3, the accumulation of waste horny
If the skin's waste keratin does not have normal metabolism, it will accumulate on the surface of the skin. The accumulation of waste keratin will make the skin feel very rough, which makes melanin difficult to metabolize. This type of skin is dull and accompanied by enlarged pores. , oil secretion and other skin performance. Therefore, the girls should promptly remove the dead horny and let the skin breathe freely.
Cause 4, insufficient skin water retention capacity
The lack of water and water-retaining ability of the skin will make the skin very dry. When the skin is seriously dehydrated, the regulation function of the stratum corneum will decrease. At this time, some dirt and static electricity generated by the computer screen will also be generated. Fine dust deposits on the surface of the skin, which is also an important cause of dull skin.
Reason 5, irregular work and rest
Do not underestimate the relationship between work and skin health, irregular work and rest, will cause the body's metabolism to decline, affecting the metabolism of melanin, but also reduce the repair capacity of the epidermis, affecting the skin. Sleeping time in the evening is the best time to update and repair the skin. New skin cells will grow and aging keratinocytes will be discharged at this time. If the girls sleep too late or lack of sleep, the skin's metabolism will not be smooth, and the skin will lose its natural transparency and become dull and yellow.
Cause 6, often pull the skin
Frequently pulling the skin, this will cause the skin to grow a lot of wrinkles, which will make the skin dull and dull. When you wash your face too hard, or when you pull your skin hard, you will damage your skin and grow wrinkles. Most of the facial wrinkles are just like this. Eyebrows often pull the skin, it is easy to make the skin tarnish, normal massage for the skin is beneficial to the skin detoxification, but excessive force to pull the sputum, it will destroy the skin cells and make the skin dull.

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