Lots of people argue that WHEN you go to bed and wake up (not how much sleep you get) doesn't have a lot to do with your skin. I came across a poll made by another member in the forums and I found it interesting that only a small number of people go to bed from 9-11 PM.
What's even more interesting is that I've known a lot of people who go to sleep at around 10 PM and wake up around 6 AM every single day, and they have PERFECT skin. As in, they could eat french fries for life and wash their face with bacteria-infested lard and still have clear skin. I hate those people...just kidding...not. I think the last time I went to bed at 10 PM was when I was ten. And then I got acne...hm. I also read on the super helpful site Skinacea.com that the lovely young lady adopted the 10-6 sleeping pattern and did this for a long time to help balance her hormones. I don't think it even has to be 10 PM for some people. For example, I knew a guy with beautiful skin who always went to bed at 12:30 and woke up at 8:30.
On the flip side, I have known people who go to bed at 3-5 AM (maybe I am one of them...), wake up at around 2 PM, and have very bad skin. In this day and age of graveyard shifts, night classes, and stressful university lifestyles, we can't help it!
Every time I hear a lecture about how important our circadian rhythms and pituitary glands are in setting our hormonal clocks, I always promise myself that I'm going to try and go to sleep earlier. But of course, I never do. Or I do it for one night and get discouraged when I see in the morning that my face is no better. The thing about hormones, however, is that they take their sweet time getting readjusted. So I think I might have to suck it up and go to sleep early for months or even years.
Of course, there are people who continue to go to sleep and wake up early and still have acne, so I think it really depends on what your root cause is. If someone has acne because their hormones are whacked from years of staying up late and snacking, for instance, it'd be something worth looking into.
I'd love to hear some thoughts on this! In the meantime, I'm going to try going to bed before 12:30 every night.