Sara, with juice fast you should not wrinkle more quickly. In fact, the opposite. By the time you finish with it, you should look like you've had a face lift. Eating only fruit, and it's juice is very very good for skin. It exfoliates, gives you plenty of vitamin C, restores and boosts collagen. Honest! Plumps up skin. This is for the face. Well, for body, it's a different story. I've ended up with sagging skin, always had firm skin. Well, you know, now I can't remember which designer said, "Ladies, make up your mind. Which would you rather have? A big bum or wrinkles? LOL. I want small bum and smooth beautiful skin!! Oh, well, life isn't perfect.
Take care, Susan