Good day. At Renewal Institute we use Photo Dynamic therapy (PDT) as a treatment for Acne. This Blue light has the ability to penetrate the deeper layer of the skin and decrease the bacteria that is causing the acne breakouts. A course of treatments can be done in combination with a chemical peel to give you the best results. You can visit https://www.skinrenewal.co.za/photo-dynamic-therapy-pdt to get more information on the PDT light.