Reddened acne marks on the face, and marks left after facial acne has healed, can be eliminated with general treatment, medication, and red and blue light therapy. Consumption of oily and sweet foods, stress and late nights can lead to acne. The acne marks left after acne subsides will fade after some time. 1. General treatment: Patients need to pay attention to a light diet, maintain a regular routine, keep the face clean, and use hydrating and moisturizing skin care products to help repair the skin barrier. 2. medication: under the guidance of a specialist, apply mucopolysaccharides polysulfate cream, retinoic acid ointment and other medications externally applied to the lesions to reduce local skin inflammation and lighten the redness of the acne marks. Hydroquinone cream can also be used externally to promote pigment absorption. 3. Red and blue light treatment: If the general treatment and medication are not effective in improving the redness of acne marks, patients can go to the regular hospital for red and blue light treatment. Red and blue light irradiation can activate cell activity, which can help repair skin redness and reduce skin inflammation. Facial acne patients should pay attention to maintain a good diet and work habits, and pay attention to keep the face clean. If the acne marks have not been eliminated for a long time, they can also be improved by combining with other phototherapy, but it is recommended that patients go to regular hospitals and be treated accordingly according to the advice of specialists.