Skin aging, also known as “skin aging”, the causes are complex, and age, genetics, environment, life, disease and other factors, generally the result of a combination of factors. 1. Age: generally after 30 years of age, the skin keratinocytes, fibroblasts gum gradually decreased, and the decline in function, elastin and collagen synthesis is reduced, resulting in skin wrinkles, atrophy, dryness, flaccidity and other symptoms of aging, which is an inevitable and normal physiological phenomenon. 2. Genetic factors: skin aging and genetic factors have a certain relationship between different races and genders, there are large differences in the population, according to research, fair skin and dry skin is more prone to skin aging. 3. Environmental factors: sun exposure, wind and rain, sea water erosion and other external environmental factors, will accelerate skin aging. 4. Life factors: long-term smoking, frequent alcoholism, high bath water temperature, lack of sleep, often late at night, lack of exercise, partial eclipse and other bad habits will lead to skin aging. 5. Disease factors: liver disease, kidney disease, gynecological diseases, metabolic disorders and other diseases, will lead to weakened skin metabolism, the skin is prone to aging. There are many reasons for skin aging, it is recommended that the crowd correctly look at age, genetic factors lead to skin aging, unnecessary excessive tension, for other skin aging factors are recommended to avoid as much as possible, and actively treat the relevant diseases, etc., in order to slow down the aging of the skin.