I have not read the other posts yet, but here's my cut on your skin.
Yes, your right, your skin is your largest organ and 50% of all body toxins are removed via the skin. That's why its so important to keep you pores open and clean. Creams and body lotions clog up the works.
Healthy good looking skin starts from the inside. Diet and exercise make for healthy skin. Always start there first.
I have been using a infared-sauna for two years and sweating has really improved my skin.