It's fenugreek so whatever literature you can find on that would be what it does. Granted, there is lots of conflicting information. I never felt much of a difference either way so I never put it in any of my products. I'm funny that way. Regardless of what the studies suggest I have to honestly feel it produces a positive effect. But some people swear by it. That's just the way it is with some stuff -- even drugs. So there you have it. I'm sure that was no help. lol