Ever wondered how to swap out textures on the same mesh? One day I saw a facial rig that swapped out normal maps to reveal wrinkles. I saw that this was revolutionary. After some critical thinking, and some experiementation. I can say that I proudly figured it out. Watch the video on how to swap out your textures. In a nutshell all you need is a Layered Texture, Set Driven Key, and a Ramp.