how to delete shader or material that we added to object?
 

i can't find the way to delete a shader or material after we added it to an object? anyone know how?

and just wanna confirm, is lambert a shader?

Yes lambert's a shader.

thanks phopojijo,
btw, i remove the shader using Window > Rendering Editor > Hypershade ... but the box that once we added phong into it, still in green color :( :eek:

any idea?