To use shader in one of your projects append from the File menu and click on append name of the blend file is glass imperfections.blend.
Overview of shader settings:
- Surface imperfections scale: Adjusts the size of the surface imperfections.
- Smudges amount: Adjusts the amount of smudges.
- Smudges scale: Adjusts the scale of the smudges.
- Smudges detail: Adjusts the detail level of the smudges.
- Surface imperfection amount: Adjusts the amount of surface imperfections
- bump map strength: Adjusts the strength of the procedural normal map to further improve realism.
- IOR: Allows you to change the IOR value of the glass.
- Color: Allows you to change the color of the glass.