Laser and light treatments
Various laser and light modalities have been utilised in the treatment of acne. The best-known light therapy is blue light, which is thought to target Propionibacterium acnes. However, treatment with this technique has produced inconsistent results.    Treatment with the pulsed dye laser has also produced inconsistent results.   These therapies are still not routinely prescribed, and more research is needed to evaluate their effectiveness and to determine any long-term adverse effects.   There are various laser treatment options, both ablative and non-ablative, that may be used to treat residual acne scarring.