Montana refers to freckles in medicine. At present, there is no method to remove freckles completely, but it can be relieved by physical therapy and medication. 1. Physical therapy: For freckle patients, they can choose ruby laser and strong pulse laser for treatment. Through the photothermal effect of laser, the pigment particles will be crushed, which can lighten and eliminate freckles. After laser treatment, it is necessary to do a good job of daily sun protection so as to avoid the recurrence of rashes. 2. Medication: patients can follow the doctor’s instruction to use hydroquinone cream and other drugs, which can inhibit melanin production and reduce freckles. For patients with freckles, it is recommended to go to regular hospitals for examination and treatment under the guidance of doctors.