I've been using the M+G for a while and here are a few things you might want to know. It works on some types of pimple better than others. For example, it can clear up a pimple on my cheek within 2 or 3 days. However, I could put it on a pimple on my forehead for a week and it will shrink just a bit, and that's probably not because of the treatment. You're not supposed to shake it because you're only supposed to use the sediment, not the alcohol. My jar's alcohol has evaporated enough so that I can tilt it and get only the sediment on the Q-tip without getting too much alcohol, which makes the sediment crackly when it dries. Don't get rid of the alcohol, though, because then the sediment will dry up. If that happens, just put a bit of rubbing alcohol in it and it should be fine again.