Can this be good long-term:
"Azelaic acid displays bacteriostatic and bactericidal properties against a variety of aerobic and anaerobic micro-organisms present on acne-bearing skin. It also has an antikeratinization effect. The antiproliferative/cytotoxic effects of azelaic acid seem to be mediated primarily via disruption of mitochondrial respiration and/or cellular DNA synthesis."
"Azelaic acid displays bacteriostatic and bactericidal properties against a variety of aerobic and anaerobic micro-organisms present on acne-bearing skin. It also has an antikeratinization effect. The antiproliferative/cytotoxic effects of azelaic acid seem to be mediated primarily via disruption of mitochondrial respiration and/or cellular DNA synthesis."