Yep, it works amazingly. Also, if you have the right complexion (usually just white skin), it hides the acne before it even heals your skin. This shit's magic.
Don't they have zinc creams though, specifically with zinc oxide in them. Wouldn't that be much more effective?
most sunscreens are zinc oxide, and so is my zinc white paint (cheap in craft stores, the brand is BASIC) I'd think zinc as a dietary suppliment would be great. See the veggie FAQ for some zinc links.
