I have been acne free since January this year. But suddenly this week I had my breakout. I would class it as "mild to moderate acne", 4-5 zits. Unfortunately I'm not free from acne.... I can say that I suffered from quite serious acne back in the days. But these recent years (1-2) I have been able to control it. But sometimes it's out of control..

So I'm wondering why this suddenly breakout? I can say that I didnt sleep well that night (4-5hours), but dont think its the main reason. Because it's not the first time that im not sleeping well. I would normally look "unfresh" when I don't get enough of sleep, but not acne like this time.

That day I was out in the sun. It's was quite hot and I played basketball for some hour. Could that be a reason? Or is it something genetic? Hormonal?