Batch Adjustments (Materials)

Quick question for the community.

Currently for my WIP’s, before I begin rendering, I’m having to go into EVERY SINGLE layer for my figure and adjust material textures (usually adjusting the Glossy shader value). Is there a way to bulk adjust them?

So, for example, say I want to adjust all of the figures skin materials. Can I quickly select the elements (head, torso, arms, hips, legs, etc.) and adjust the shader values for ALL in one swoop?