If someone says you have a "thick skin", don't be in a hurry to get angry, from a physiological point of view, this may be praising your skin condition.
In the eyes of dermatologists, "thicker skin" is an essential element of healthy skin, indicating that the skin's barrier is strong and its ability to resist external stimuli is high.
Life Times (search for "LT0385" within WeChat to follow) interviews authoritative experts to tell you about the health benefits of "thick skin" and teach you to repair damaged skin barriers.
Experts interviewed
Jiang Wei, chief physician of the Department of Dermatology, Peking University Third Hospital
Dong Zhengbang, deputy chief physician of the Department of Dermatology, Zhongda Hospital affiliated to Southeast University
How much do "thick-skinned" people earn?
When it comes to the thickness of the facial skin, there are two concepts that have to be said, one is the stratum corneum, and the other is the sebaceous membrane.
Stratum corneum: this is the first line of defense of the skin and plays an important protective role for the skin;
Sebaceous film: the pores and sweat glands on the surface of the skin will secrete oil and sweat, skillfully and evenly mixed to form a thin layer of film, which is the "sebum film", which is the natural moisturizing layer of the skin, which can prevent the skin from losing moisture too quickly.
Moderate preservation of the stratum corneum has many unexpected benefits:
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Not easy to dry lines
Lipids between stratum corneal cells, natural moisturizing factors, etc., can prevent the loss of skin moisture and nutrients.
When the skin barrier is damaged, the skin's ability to lock water decreases, and the skin is prone to dryness and peeling.
Protects against UV damage
The stratum corneum absorbs some of the ultraviolet rays, making the skin more resistant to UV rays.
When choosing sunscreen products, "cheeky" people are more tolerant of various ingredients and are less prone to allergic reactions.
Prevent bacterial and virus intrusion
The sebaceous membrane is weakly acidic, which can inhibit the excessive multiplication of skin bacteria and help avoid infection with some skin diseases, such as dermatitis, eczema, etc.
Chemical stimulation
The stratum corneum can make the skin structure tight, resist the invasion of strong acids and alkalis outside, and resist general friction, compression, etc., which is equivalent to the physical barrier on the surface of the skin.
Exfoliation, once a month is enough
Some people have thicker cuticles, strong oil secretion, enlarged pores, and after removing part of the stratum corneum, the skin will look delicate and smooth for a period of time.
But unreasonable exfoliation is damaging to the skin. The stratum corneum is too thin, the skin will be sensitive and fragile, the defense will decrease, there is dryness, itching, and it is easy to appear erythema, papules, peeling and other phenomena.
The correct method is as follows:
■It is possible to exfoliate only in the area of the T area of the middle of the face where oil secretion is strong.
■ Epidermal replacement time, that is, the time of normal and natural shedding of the skin is 28 days, following this law, the frequency of exfoliation is most suitable once a month or so.
What makes your "face" thinner and thinner?
People with damaged skin barriers are often more likely to develop red blood. Now a common type of sensitive skin patients in the clinic, mostly women, facial skin is very easy to red, what skin care products do not dare to wipe, a wipe will have a burning sensation, which is related to damage to the skin barrier.
The following factors can damage the skin barrier and cause the epidermis to thinn:
The stratum corneum is inherently thinner, and with frequent makeup or lack of sun protection, the skin barrier is damaged over time.
Incorrect skincare behaviors, such as over-cleaning, excessive exfoliation, or the use of some alkaline cleaning products.
With age, metabolism slows down, hormone secretion decreases, sweat and oil secretion on the skin gradually decreases, and self-protection mechanisms become weaker and weaker.
How to care for thinning skin?
Maintaining "cheekiness" requires starting from the details of life and doing the following things to help prevent or delay or even repair thinning skin.
Wash your face with water at 32 °C
Scientific experiments have proved that the human face temperature is 32 ° C, it is recommended that the temperature of the face wash water is also maintained at about 32 ° C, which can effectively clean all kinds of dirt, and partially or completely wash off the sebum film to regenerate it.
Use overheated water, easy to grow fine lines
If you frequently use hot water with a higher temperature, although it can remove oil vigorously, it will constantly damage the sebaceous membrane and destroy the skin barrier.
For dry skin, excessively hot water is often used when washing the face, which will cause the skin to be drier and easier to wrinkle, which is also an act that is not worth the loss.
Alternating hot and cold water to wash your face, it is easy to produce red blood
A common misconception is that many people believe that alternating hot and cold water washing can adjust skin elasticity and reduce wrinkles.
In fact, the skin is often stimulated by hot water, which will make the surface microvascular dilate, and at the beginning it will feel that the face is rosy and the complexion is good, but over time, the dilated microvascular cannot be retracted, and it will produce "red blood filaments" that are difficult to remove.
Wash your face with cold water, easy to clean not thoroughly
Some people prefer to wash their faces with cold water, which is easy to make the skin surface slightly wrinkled, and the oil is not easy to wash, which cannot achieve the desired cleaning effect.
Moderate skincare
It is recommended to use a gentle soap-free cleanser, washing once in the morning and once in the evening. Do not rub vigorously with your hands or towel to avoid damaging the sebaceous membrane.
Do a good job of moisturizing
The state of skin hydration is very important for the repair of the barrier. The mask does not need to be applied every day, usually 1 to 2 times a week is enough, each time 20 to 30 minutes can be applied.
Pay attention to sun protection
Even if you wear a mask, you should pay attention to sunscreen, if you wear a mask for commuting, shopping, etc., choose SPF15, PA+ sunscreen can be; when exercising outdoors, it is advisable to choose SPF25 ~ 35, PA++ products.
If the skin is in a period of high sensitivity, you can choose sun protection such as a sun hat and sunglasses.
Light diet
Stay away from spicy, greasy, and sugary foods, drink more boiled water, and replenish water in time. Usually relieve mental stress in time and avoid staying up late.
When the skin is red and highly sensitive, it is best to seek medical treatment in time and repair the skin according to the prescription of the regular hospital. ▲
Editor of this issue: Zheng Ronghua
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