I haven't tried the juice, but i have noticed that when i do enema's, my skin clears up much quicker - less toxins being re-absorbed through the bowel wall to come out your face! If i have a bout of bad eating and consequently bad eliminations, my skin gets bad.
Although i did try garlic once and it burnt my skin so badly (ok, i left it on a bit long and it did sting a lot) i had blisters and it took a few months for them to go away!! Garlic in moderation only!!