It's an oil called xgenus. I found it on ebay one day but they have an official site to buy it from...http://primagenus.com I've also been reading about an herb called tongkat ali... From the research I've found about this herb it says that if you take enough for your body weight your body will almost go through another puberty and your penis and nuts will get bigger. But my main reason for posting this was about the xgenus oil, I bought a bottle and have only used for a couple of days but my penis is already much more vascular and heavy feeling.