This is a simple perk I threw together in Fo4Edit. It checks your characters bodyslots and applies a radiation healing effect when those slots are empty. Now you have a reason to take off your clothes. (Your body expels accumulated radiation through the skin, when there is nothing in the way)   Each slot, (Torso, Head, LArm, RArm, LLeg, RLeg,) is checked independently. I added the slots used by Dicky's Pinups and the Sporty and Lacy Underwear mods, so the upper