No, creatine has no effect at all on acne, so it is perfectly safe to take in your situation. The only potential side effect with creatine is mild water retention, which only takes place when you heavily overdose on it and don't hydrate yourself enough. Other than that, creatine should not cause any break outs. However, keep in mind that I am talking about the creatine as such, since many creatine products have a lot of additives, which in turn could potentially cause a break out. Hence the importance of choosing a clean creatine product that has no additives in it - only creatine. For instance, I use Ancient Strength Creatine, as it has three different forms of creatine, and nothing else but it.