Does turning Vegetarian or Vegan improve skin quality or does it make it worse?!

Does turning Vegetarian or Vegan improve skin quality or does it make it worse?

Let me know if you have seen any improvements since becoming either.

Oh, my acne of many years disappeared in a couple weeks. One of my best friends was amazed since he hadn't seen me over the summer that I changed my diet. It also helped that I was doing a lot of athletics, bicycle race training, drinking lots and lots of water, etc. I always did that anyway, but any change in diet takes an almost immediate noticeable affect when doing high intensity athletics.

I'm way beyond puberty now, but if I ever go and eat some sugar like maple syrup on my pancakes, or potato chips, or whatever, I get those little acne bumps on my forehead almost immediately. They won't become a whitehead unless I continue eating badly for at least a couple days or so. Lots of sunshine helps a lot for my skin too. Basically any sugary or oily type foods will start my acne. Basically junk processed foods, right? Why does acne come in puberty more than before or after... because the body is too busy doing other things and unable to handle the junk-food. Some people just never have skin problems, but basically, if I eat something oily, it's coming out of my skin in minutes. Just different skin types I guess.