Modern women are more and more concerned about the maintenance and care of the skin, the correct skin care, starting from the understanding of their own skin. It is believed that a correct judgment of their own skin type can provide a good orientation and guidance for women’s daily skin care. From the cosmetic skin science, healthy skin can be divided into different types of skin from different perspectives: First, according to race: the skin is divided into three skin types, such as Caucasian skin, Mongolian skin and black African skin; Second, according to the individual’s response to sun exposure: it can be divided into I-VI skin types; Third, the most commonly used (and most closely related to the daily skin care) classification method: The most common (and most closely related to daily skin care) classification method is based on the distribution of skin oil in different parts of the skin and epidermal water content to the division of skin types, which is often referred to as “oily skin”, “dry skin”, “normal skin” and “combination skin”. “and” mixed skin “. Oily skin —— has excessive sebum production and shiny skin. This type of skin looks rough, has large pores, and is prone to acne and pimples, commonly known as “pimples”. Dry skin —— is the opposite of oily skin, in that it lacks moisture and oil, and is therefore dry, less elastic, lacks luster, is rough, and has small pores. Due to the lack of moisturization, the skin is more prone to aging and wrinkles. Neutral skin —— moisture and oil secretion are more moderate, is more ideal skin state. This skin looks more delicate and polished, with less obvious pores. It varies in different seasons, being oily in summer and dry in winter. Some people say that combination skin is “a mix of oily and dry skin”, which is not quite accurate. Combination skin means that the skin on the cheeks has a moderate amount of sebum and moisture, but the “T” area (forehead, nose, chin) is oilier, so the pores on the sides of the nose are large and coarse, and acne is likely to occur, while the skin on the cheeks is delicate and smooth. Simple and practical way to determine skin type —– tissue paper test method. Wash your face before going to bed, use a towel to soak up the water on your face, and don’t apply any skin care products to bed. When you wake up the next day, wipe all parts of your face with a thin tissue. Wipe your forehead first, then the sides of your nose, then your chin and cheeks. If the paper is transparent or has oil stains, it indicates that you have oily skin; if you have wiped the paper are very clean and feel the face tight, it is dry skin; if the paper has no special oil stains, the face was wiped before and after the change is not big, it is neutral skin; if the forehead, nose, chin oil stains, and the face of the oil stains is very little, then it is a combination of skin.