One Click Age is an add-on that automatically applies weathering and surface imperfections to existing materials. Instead of manually constructing procedural node setups, users can apply aging effects through a dedicated interface. The tool features a layer-based system with controls for adjusting the intensity of the aging, alongside options for texture variants and gradient masks.

Settings can be copied, pasted, and managed across single-user materials or multiple objects. For accurate texture mapping, target objects require proper UV unwrapping and applied scale and rotation. While fully compatible with Cycles, some generators fall outside EEVEE's current capabilities.