We’re not the only ones experiencing hormone changes as we get older. Men do, too. Their testosterone levels drop, causing decreased libido, fatigue, loss of muscle size, erectile dysfunction and more. On Sex Drive for Him cream helps boost testosterone production so he can feel like his “young” self again. This men's hormone cream is proven to increase testosterone levels in 98.8% of men through a unique mix of botanical extracts and bio-active nutrients. Easy to use; just rub on the skin behind your knee. 2 oz. jar.