There is a difference between cell volumization and water retention.
Exactly. And the #1 thing most females will say about creatine if they know what it is..
"I don't want to use that because it will make me retain water."
Very different concepts.
If your face is filling out.. it could just be you are bulking and gaining weight. Creatine in general (cell volume) will give you around 5 lbs of water in general as your cells become saturated but that is different then bloating or swelling in general.
I've not seen any studies, peer reviews that show any negative side effects other then stomach discomfort.
Not saying you can't be different and there's some odd case but in general, blanket statment, it's not likely the creatine.