Our skin is the protective layer of the body, not only against the invasion of external bacteria into the body, but also a measure of a person's health and beauty.
Especially the facial skin, which is exposed to the air for many years, is exposed to the surface of the skin by ultraviolet rays, dirt, dust, bacteria and other harmful substances floating in the air. Add the oil, sweat, dead cells, etc. that they secrete.
These factors will affect the normal function of the skin, and even cause skin disease infections, acne and other skin diseases, resulting in premature aging of the skin. Skin care has become an indispensable part of our daily life, so we should know our skin before maintenance.
The properties of the skin are divided into four types in aesthetics: normal skin, oily skin, dry skin, and combination skin.
<h1>■Normal skin</h1>
Normal skin is the ideal skin for health, mostly seen in women between 9 and under 20 years of age, with moderate sebum secretion, neither dry nor oily skin, ruddy and delicate skin, elasticity, small pores, and insensitivity to external stimuli

Skin features : Pores look small and the skin has a translucent glow. The skin is healthy and smooth, with a balanced oil and moisture, few acne and blackheads, and the skin is usually not oily or tight
Skin Advantages : Normal skin is the most ideal skin type, usually in pre-puberty children have this ideal skin type, after puberty, very few adults can still be lucky to retain normal skin type.
Skin Disturbance : Slightly greasy in the T-shaped area in summer and slightly dry in winter, the perfect condition is easily overlooked, neglected maintenance, and will soon turn dry as you age.
Care Focus: Usually use mild basic care products, focusing on moisturizing, with regular exfoliation massage, enhanced sunscreen, plus moisturizing mask is enough.
<h1>■Oily skin</h1>
The secretion of oil is strong, the skin is greasy and shiny, the pores are coarse, the texture is rough, it is not easy to wrinkle, it is not sensitive to external stimuli, and it is easy to produce acne and acne. Easy to remove after makeup. The PH value is 5.6 to 6.6
Characteristics of the skin :
Look at most areas of the face pores are obviously large, easy to have a full face of oil, the skin looks a little rough, you will feel that the epidermis is slightly thick. Usually the face is not tight after washing, and there is a greasy feeling in 2 or 3 hours, and it is easy to suffer from blackheads, acne and acne scars.
Makeup is easy to take off after makeup, and usually within two or three hours you will feel the makeup on your face begin to melt.
The skin is in good condition after sun exposure, and even if exposed to the sun, there will be no extreme discomfort.
Hairstyles are difficult to last, and are prone to oil and odor.
Oily skin is formed because the sebaceous glands are hyperactive and secrete excess oil. Usually the skin will be oily during puberty, men will be oily, staying up late and stress can also lead to oily.
Skin Advantages : Oily skin produces more oil, the skin has this layer of natural moisture barrier, to help the upper layer of skin retain moisture, from the dry factors in the environment, it is not easy to have dry lines and fine lines, so oily skin is fuller than other skin types, not old.
Skin Disturbance : Oily skin is usually shiny and has a greasy and unclean feeling. Excess oil is easy to adsorb dead skin and dirt, causing pore blockage, easy to produce blackheads, acne, acne problems. At the same time, oily skin is easy to take off makeup, and with age, the internal moisturizing factors of the skin are lost, and oily skin needs refreshing moisturizing.
Care Focus : In addition to the daily thorough cleansing of the face, do not forget to do exfoliation and mask work, while masks and toners are also very important for deep cleaning, pore tightening, not only to remove oil, but also to inhibit oil. Usual maintenance should pay attention to oil control at the same time, pay attention to the function of refreshing and moisturizing.
<h1>■Dry skin</h1>
Oil secretion is less, drier, pores are small, wrinkles are easy to occur, capillaries are shallow and easy to rupture, and they are more sensitive to external stimuli. The PH value is 4.5 to 5.
Characteristics of the skin
Pores are tiny and almost invisible. The surface of the skin is not shiny, showing a matte state, and it is easy to form fine dry lines and expression lines, especially around the eyes and lips. Dry skin is prone to tightness and even peeling. After cleansing, it is usually easy to have a long period of tightness, some women are dry skin when they are young, but usually most women will gradually become dry skin after aging, and people who live in hot or cold low humidity climates are more likely to have dry skin.
Skin Preferences Dry skin has a delicate skin texture due to the small pores. Less oil, less easy to adsorb dirt, less likely to have an unclean feeling, less clogged pores, blackhead acne. Also, after applying makeup on dry skin, it is not easy to take off makeup. If dry skin is moisturized early, the skin texture will be delicate and clean.
Dry skin is prone to tightness, lack of radiance, and easy peeling or cracking. Due to prolonged dehydration, dry skin is also more prone to dry lines and fine lines than other skin types, and is more prone to sagging and aging. The stratum corneum of dry skin is relatively thin, so it is easy to feel irritation, easy to be sensitive, and produce pigmentation.
Care Focus on dry skin, from cleansing to protecting each step should pay attention to moisturizing, moisturizing, at the same time, dry skin is delicate, pay attention to choose mild skin care products. Dry skin pay attention not to excessive exfoliation, while strengthening sun protection throughout the year, to avoid small spots and photoaging, with massage, can promote blood circulation, nutrient delivery, strengthen metabolism.
<h1>■Combination skin</h1>
This is the most common skin type, as most people look healthy and smooth after puberty, except for some oily T-shaped areas (forehead, nose, down to chin) and less oily or even tight skin on the cheeks. There are two types of combination skin types, which usually change with the seasons. For example, in the summer it will be mixed with oil, but in the winter it will be mixed and dry. Mixed dry refers to the middle T-zone is oilier, the pores are large, and the cheeks are dry, there will be tight skin, usually around the eyes dry lines. Mixed partial oil refers to the middle T-zone is oilier, the pores are large, but the cheeks do not produce much oil, not tight, feel more comfortable skin.
Skin Advantages : Combination skin is neither oily nor dry.
Skin Disturbance : The T-zone of the mixed skin is different from the annoyance of the cheeks, and sometimes even the two opposite needs, and the skin is easy
It causes acne and acne problems.
Care Priority: Need to balance the maintenance needs of the T zone and the cheeks, or zone care. For combination skin, care should also be taken to clean the hair
Pores, to prevent acne, spring and summer combination of skin is easy to greasy, must keep the skin fresh and astringent pores, autumn and winter season is more moisturizing, moisturizing.
Observation method : First of all, we can use direct observation to determine the type of skin in a well-lit place to perform a skin examination. Before removing makeup, check the surface of the skin for oil, about 5-10 minutes after makeup removal, and then continue the analysis and examination. Observe the T-shaped and U-shaped areas of the skin. The T zone refers to the forehead of the face (representing the horizontal line of the T word) and the nose (representing the vertical line of the T word), while the U zone refers to the cheeks and chin of the skin.