Does Light Therapy Work for Acne? What Blue Light, Red Light, PDT and IPL Can Do
Written by Dr Gerard Ee, MBBS (UK), MRCS (Edinburgh), DP Dermatology (Cardiff). Last medically reviewed and updated: September 2026. Light therapy can improve mild-to-moderate acne, particularly when red and blue LED devices are used consistently, but it rarely replaces a complete acne treatment plan. A 2025 meta-analysis of six randomised trials found short-term improvements in inflammatory and non-inflammatory lesions with





