Baby Oil will likely cause the suit materail to degrade. KY will not cause the materail to degrade but it will make your suit a little slick on the inside. Though I do believe that is the intent. You can also try a silicone based lube called Wet Platinum. They also make a second product for the removal of Wet Platinum. Meanwhile, stop going to the gym to work on those guns - you are showing all of us guys at the dive site up in a most terrible way.