How to Prevent Acne

I guess other people have figured this out. But I got this idea about 3 years ago, and it works very well. All  you need is baby powder. And time, actually.

So, first, wash your face before you go to bed. The best thing to do is washing your face with warm water, to open the pores. Then apply soap to your face to let the junk out. Rinse again with cold water to close the pores. If you don't have such a big problem with pores, washing your face with cold water is just fine.

Secondly, let your face dry naturally, or wipe it with a clean towel. We don't want any dirty stuff on our face when we sleep, right?

When your face is dry, apply the baby powder. Try to put more on the spots that are most oily. But you don't have to put on too much to look like a geisha. Be careful for the nostrils, we don't want powder in our lungs...

The reason to do it at night, is because we can't care for our face when we're sleeping. Nothing to clean our face from oil for hours! Another thing is that sometimes you'll look ridiculous and you don't want anyone to see you like that, haha. 
By the way, just do this every night, and you will have less acne. Good luck!