I've tried just about every lip plumper their is on the market ( lip venom, fat lips, lip injection, Sovage lip explosion, city lips, Stung lip enhancer, and Hydroderm) and all have had the same so-so results. So don't expect HUGE DRAMATIC changes in your lips. With all of them you will notice a tingling sensation (they're supposed to increase blood circulation and they use spices to do this) and some have long term plumping effects by moisturizing with exotic oils and building collagen. All the ones I mentioned above work equally well. But I recommend Stung lip plumper which you can find on eBay for as littles as $6.67 for a 10ml bottle. It doesn't work any better than the ones I mentioned above (they all work equally good) but you get a lot more 'bang for your buck'. All the other products cost on average $3-$4 per ml. Stung! (also called lip pulse) retails for $4 per ml but costs $0.99 per ml on ebay (unless you buy in bulk and you can get it for $0.67/ml. So its even cheaper than if you tried to make your own homemade lip plumper (and a lot less messy!)