Hello everyone.
I was wondering why after I import some materials to my materials pad and restart ZBrush those are gone? I really didn’t find a way to save them and searching on the forum didn’t give me any answers…
Thanks in advance 
Up to 25 materials can be placed in the ZStartup\Materials folder. These will load every time ZBrush starts. This is meant for the materials that you will be using constantly – remember; all ZStartup items consumer system resources that could be used for polygons.
Any materials that you’re not going to use constantly can be placed in the ZBrush 4\ZMaterials folder. That way they will be seen by LightBox, making it super easy to browse them while in ZBrush and choose the specific one you need for your project.