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. Author manuscript; available in PMC: 2014 Oct 1.
Published in final edited form as: Curr Opin Pharmacol. 2013 Sep 20;13(5):10.1016/j.coph.2013.08.009. doi: 10.1016/j.coph.2013.08.009

Figure 5.

Figure 5

Improvements of severe inflammatory acne treated by 15% ALA-PDT (a c) and control (only red light alone) (d f). (a, d) before treatment; (b, e) 2 weeks after four consecutive treatments; (c, f) at follow-up visit after 24 weeks [213].