The treatment of freckles is effective as freckles are associated with genetics, sun exposure and other factors. Laser can only get rid of freckles that are already there, it cannot change the freckle genes, so the duration of the effect is not certain. However, it is necessary to avoid sunshine and other triggers, and the treatment includes general treatment and physical treatment. 1. General treatment: avoid excessive exposure to sunlight; use 0.05% vitamin A acid ointment and 2%~3% hydroquinone cream externally; 2. Physical treatment: at present, the commonly used laser treatment includes photorejuvenation and picosecond, etc. The clinical effect is exact. Therefore, when you have freckles, you should go to regular hospitals for treatment in time, and choose suitable treatment under the guidance of professional hospitals.