Says everyone ever when i ask them why they don't use soap anymore. So they've all switched to liquid soap. I want to have some counter-arguments - can any of my more chemistry minded friends here provide me with some? I would say that commercial soaps have more 'additives' in them so are more likely to cause a film on shower doors - but don't know that. Maybe it's the superfat? Also I could argue that they are contributing to a greater use of plastics by using bottles - that's always a winner!