I get why my hands need to be clean before going in the tank. But I don't use soap/detergent, I rinse them with water only. Yes my skimmer is affected, I'm assuming because of my skin's natural oils. But my skin's natural oils seem like a better thing to put in a tank than detergent. If I've recently showered/lathered up, I won't put my hands in the tank for several hours afterwards.
AFTER I take my hands out is when I wash with soap, seeing as how I've just dipped them into a bacteria farm, lol.