I have ridiculously sweaty/oily palms in the summer. I have to literally wash my hands, well, constantly in order to keep my grip, and to keep my overgrips from getting contaminated... I first used Prince Grip Plus lotion. This is not bad. But the packaging sucks and the bottle is kind of hard to use... But, you have to apply it a lot in my case to keep my hands dry. Then I got Mighty Grip for Tennis. This is a powder and a big disappointment. It's slightly tacky but it doesn't help my hands stay dry...at all. It still doesn't work as well as simply washing my hands. I also tried Mueller Magic Grip... another disappointment. It's basically just Prince Grip Plus in a spray form. It drys your hands but it also calls them to have less grip (because of the powder film). I put an arseload of it on 10 minutes ago and my hands are sweaty again (just sitting here). There's another product called Dry Hands. Has anyone used this? It seems like a lotion that repels water. I'm pretty much willing to try anything at this point.