My left hand I left alone, my right hand I coated generously on cracks and lines, and lightly on the remaining surface. I did this in preparation of a long, tedious ceremony, in which the climax consists of shaking the hands of about 50 people. During the entire ordeal and at its end, my left hand was visibly soaked. As for my right hand, though it felt like I was sweating there were no visible signs of it; every 3-4 minutes I pressed my right hand on my forearm to feel for wetness, and I did the same with my left hand to compare. My right hand was dry despite my body telling me otherwise.
New skin is waterproof, meaning water cannot pass through. I figured that if liquid cannot get in, then liquid cannot get out. Further testing is needed to see if this genuinely works, but this solution is utterly useless if you're trying for some alone time with another person- worse, if this person has soft skin and a nose like a bloodhound's. The idea of using liquid bandaid came to me from the movie Gattacca- the protagonist would put on fake skin on his fingertips.
I personally have tried topical solutions, sleep deprivation, alcohol, meditation, and consultations with unhelpful doctors. The list continues to grow.