Freckle is a common brown dotted pigmentation spot on the face, which is an autosomal dominant skin disease. The increasing number of freckles on the face may be caused by environmental factors, such as sun exposure or excessive exposure to X-rays and ultraviolet rays, hormonal influence and bad habits can also make the freckles increase, suggesting the aggravation of freckles. 1. Environmental factors: sun exposure or excessive exposure to X-rays and ultraviolet rays is the most important reason for the aggravation of freckles, mostly occurring on exposed parts of the skin, such as face, neck, arms, etc.; 2. Hormonal influence: because of the influence of hormone level in the body, the number of freckles will increase in adolescence, while the number of adults has a tendency to decrease; 3, bad habits: long-term smoking and alcoholism, improper use of cosmetics, etc. will trigger or aggravate freckles, and bad diet and rest habits such as eating spicy and stimulating food and staying up late will also make more and more freckles; 4, other: women’s menstrual disorders, mental stress, lack of exercise, long-term oral contraceptive use, etc. The lack of exercise, long-term oral contraceptives, improper use of electronic devices, etc. may also make freckles more and more. In daily life, it is recommended to do a good job of protection and sun protection, minimize going out when the sun is strong, pay attention to moderate exercise, ensure sufficient sleep and light diet. If freckles are a problem in your life, you can get rid of them by laser treatment.