Some acne can be fixed at the surface. Some acne only responds to holistic treatment. Most acne is improved by addressing both. For example, topical vitamin activity is always enhanced by oral vitamin supplementation and vice versa. Your skin is an excretory organ, the biggest organ on your body, and the end part of your digestive system the same as your liver/colon and kidneys/bladder are!
Everyone knows that having healthy bowel movements and urination is essential for overall health, removing waste, ensuring nutrients consumed are being processed adequately, and if your urine and bowel movements don't look right, it's a sign of illness or other stress and/or dehydration. You can take laxatives (or anti-diarrheals,) enemas, diauretics, fiber etc to treat the symptoms of what's making your stool loose, or hard, your urine dark or infrequent, but it's not addressing the reasons why you aren't excreting healthfully- fat intake, acne and stool density are HUGELY correlated.
Likewise, your skin is a last-stage indicator of dehydration/poor digestion/nutrition/illness/stress of any sort-- (excess sebum, hard plugs, congested pores and hyperkeratinzation) but that doesn't mean that you can't screw things up on the outside by touching your face a lot or applying cosmetics and cleansers with allergenic ingredients.
What you put in/on is what you get back!
Edited by Turn0ver, 05 August 2014 - 04:08 PM.