Is it possible to apply textures of different color to a surface on each side? blender 2.9 As stated I was wondering if it was possible to put a texture of a different colour on the the other side of a surface.  If one side is the external surface, and the other the internal, can this be done without extra geometry.  It seems as if it should be. Blender 2.9.
I tried adding these nodes together as mentioned in the comments but I am obviously doing something wrong.
You can use &quot;backfacing&quot; from the &quot;geometry&quot; node:

Here is something closer to your setting: