Abstract: Objective To evaluate the clinical curative effects of narrow alternating red-blue light in the treatment of facial acne. Methods 60 cases with facial acne,15-35 years old were selected, who were randomly assigned into red light group, blue light group and alternating red-blur light group, each group had 20 cases. To assess the therapeutic effects by observing the skin lesion changes before and after treatment. Results The effective rate of red group was 55%. The effective rates of blue group and red-blue light group were 50%and 80%respectively. Conclusion The treatment of narrow alternating red-blue light in facial acne is markedly faster, has higher safety and it is worthwhile being distributed in clinical practices .

Key words: red-blue light alternate, red light, blue light, facial acne