Seven aesthetic standards of skin: light, brightness, transparency, moistening, fullness, tightness and shape.
Standard 1: light-refers to clean skin, no acne on the surface, balanced water and oil, smooth and tidy.
Standard 2: Brightness-refers to the skin with natural glossiness and normal refraction function, which produces five faculae with diffuse halo and uniform skin color under normal light on the face.
Standard 3: Permeability-refers to skin permeability, no hair follicle blockage, no spots and imprints, and no pigmentation.
Standard 4: Moisturizing-refers to the soft, smooth, refreshing and non-greasy skin; Skin plays an important role in water metabolism. The moisture content of newborn skin is about 80%. The moisture content of adult skin is about 70%.
Standard 5: satiety-refers to the fullness and roundness of the skin, and there is no sliding phenomenon in the local tissues of the face. The key to meet this condition lies in the collagen production of skin.
Standard 6: compactness-refers to the compactness and elasticity of the skin; Elastic fibers account for 2-4% of the total skin volume.
Standard 7: Type-refers to the clear facial contour without relaxation, and the dermal connective tissue is mainly composed of collagen fiber, elastic fiber and reticular fiber.
On the contrary, various skin problems, such as acne, spots, dark yellow, dry, rough, loose and oily skin, are common skin pain points and skin problems.
Normal people's skin presents different types because of its different characteristics. The type of skin is the basis of skin care, and the way of skin care and beauty should be chosen according to the type of skin. According to the moisture content of stratum corneum, the secretion of sebaceous glands and the degree of reaction to external stimuli, facial skin can be divided into five categories: neutral skin, dry skin, oily skin, mixed skin and sensitive skin.
Next, let's look at it one by one.
Characterization of the first kind of neutral skin;
1, ruddy and shiny skin.
2. Lubrication is not sticky and rough.
3. Fine and elastic texture.
4. Sebum and sweat are secreted smoothly to adapt to seasonal changes.
5. Insensitive to external stimuli.
6, it is not easy to take off makeup after makeup.
Skin condition:
Neutral skin is the most ideal skin, which is common in adolescence before 15~ 16 years old. Its water and oil secretion is moderate, mainly moisturizing, and it is not appropriate to overuse functional skin care. Pay attention to the difference of climate change and choose different cosmetics when nursing.
Nursing misunderstanding:
Many babies with neutral skin will use skin care products at will. When different brands of skin care products are mixed, allergies may occur due to excessive use of skin care products. It is recommended to match the same type of products in product selection.
Characteristics of the second kind of dry skin:
1, the skin lacks luster.
2, dry and rough, poor elasticity.
3. Fine texture and fine pores.
4. Thin skin is prone to wrinkles, long spots and sensitivity.
5, easy to dandruff, card powder is not easy to take off makeup, not easy to grow acne
Internal cause: Simply put, congenital sebaceous glands secrete less oil, and acquired sebaceous glands and sweat glands decline, resulting in less skin oil, which can not lock moisture in time, thus making the skin dry.
External cause: It is caused by life, skin care habits, ultraviolet rays and other factors, which leads to imbalance of water and oil in the skin and makes the skin dry!
The third characterization of oily skin:
1, oily and shiny.
2, the pores are thick, the texture is thick, and it looks like orange peel.
3, the skin has good elasticity and is not prone to wrinkles.
4, makeup does not last long. Easily infected, pores blocked, dark yellow skin, acne.
Oily skin: It is mainly related to congenital sebaceous gland activity, androgen secretion, adolescence, diet, daily routine and improper nursing.
External oil and internal dryness: skin is short of water. In order to moisturize the skin, the skin protection mechanism will secrete more oil, resulting in the illusion that the skin oil is not dry.
The fourth mixed skin characterization:
1, "t" oil "u" dry
2. There is oil in the "T" area, with large pores and blackheads. Acne and acne;
3. The cheeks in the "U" area are dry and lack of water, and there will be fine wrinkles and spots;
? Question: Blackheads? Acne, acne, coarse pores, fine lines and spots
1, congenital factors: this kind of skin is formed a lot due to congenital factors, and the oil secretion in T area is strong, and the cheeks are very dry.
2, improper care: do not think that only congenital factors can easily cause skin water shortage, improper daily skin care will lead to water-oil imbalance, and gradually become mixed skin.
3, improper work and rest time: we are always facing pressure from all sides, staying up late, it is most likely to cause sebum instability, thus becoming mixed skin.
4, seasonal changes: seasonal changes will increase sebum secretion in the T area, and the U area will be drier, leading to acne, pigmentation and wrinkles.
The fifth kind of sensitive skin
According to literature reports, the prevalence of "sensitive muscle" is as high as 40% ~ 50% worldwide. According to the statistics of Dordogne Sensitive Skin Research Center, 46% of women and 30% of men in China have different degrees of skin sensitivity; Different cities and different ages have different allergic rates; Young people are higher than the elderly, and developed cities are higher than remote areas.
Skin characteristics:
1, it seems that the skin is thin and allergic, and the red blood on the face is obvious (telangiectasia);
2, the skin is prone to redness, general temperature changes, too cold or too hot, the skin is prone to redness, fever, tingling, itching and tightness.
Why do sensitive muscles appear:
Congenital sensitivity: congenital skin resistance is weak;
Acquired sensitivity: dust, pollen, cosmetics, food, environment, drugs, age, season, pets, temperature, etc.
It is worth noting that due to the influence of age, season, region and other factors, skin quality is not static.
For example:
In childhood, the skin is mostly neutral or dry.
In adolescence, some people will be like oily and mixed differentiation.
With the increase of age, the skin secretion decreases, and the skin will change to a mixed and dry type with less oil.
If you take drugs, such as tretinoin, the skin will always secrete oil, and the oil skin will become dry, mixed or sensitive.
Oil secretion decreases in winter and increases in summer.
The skin condition in the south and the north will also change. For example, neutral skin in the south will become dry skin in the north.
. . . . . . Wait, wait, wait
Therefore, mastering the correct skin care knowledge and understanding your skin quality is the first step of correct skin care and efficient maintenance.
I'm Lu Zheng, join me in happy skin care, and don't take detours!