I've got a few miles on me, so a good pre-shave oil definitely helps keep the wrinkles at bay. Vitamin E, shea and argan oil are great ingredients for firming skin. But the thing I like most about oiling up in advance is the residual lubrication that remains after the soap has been removed. It's awesome for making touch-ups to the shave, allowing me to see any missed whiskers. Reapplying soap again just hides them.