In Unreal Engine 5.7, materials aren’t just static visuals. They can be fully dynamic and controlled in real time using Blueprints. Building upon the adjustable material we’ve already created, this tutorial walks you through creating surface imperfections to further enhance your materials.
https://dev.epicgames.com/community/learning/tutorials/yDo7/fortnite-epic-for-indies-how-do-you-use-blueprints-to-control-surface-imperfections-textures-in-unreal-engine-5-7