Is there a difference between MC and JUICE FASTING?

If so, what? Is there a reason to choose Master-Cleanse over just freshly squeezed juice, say Orange? I'd really like to know before I start another fast.

And as a side note: I just finished a long juice fast while doing parasite cleansing. MY SKIN IS A MESS. I never had Acne or problems with it - until I did this. I broke out in rash like, teeny tiny bumps all over my face. I wasn't scared because I knew it was probably detox. However now that I am eating again, not fasting, not parasite cleansing, the bumps are Smaller but still there and I have been having chin breakouts like nobodies business. This is GROSS! Is this normal from a fast? Does the Master-Cleanse help or hurt your skin? Anyone have any suggestions on how to clear this up? Thanks
Sierra