Clinically, there is no saying that laser freckle removal can only last for two or three years. After laser freckle removal, freckles will still recur if there is no good sun care. Freckles, which occur on the face, is an autosomal dominant hereditary disease that is genetically determined and often has a clear family history. Excessive exposure to sunlight or ultraviolet rays may induce freckles or aggravate them. Laser freckle removal does not completely remove freckles, but only lightens and reduces the number of freckles. After laser freckle removal, the triggering factors of freckles are still not lifted. If there is no good sun protection and the skin is over-exposed to sunlight and ultraviolet rays, freckles will recur. In addition, irregular life, bad rest, computer radiation, etc. can lead to aggravation of freckles. So you should pay attention to sun protection, rest and skin care after laser treatment. Laser treatment should choose regular institutions, and after laser freckle removal, you need to pay attention to sun protection and moisturizing of skin, and develop good living habits.