Decals added to glass is visible on the inside
Hello
I'm having an issue that is frustrating me quite a bit - I am using stager to render out some product images and most of the labels are on vials of glass material. However when i apply a decal it is visible on the inside aswell (mirrored as if the label was see through). Anyone have a solution for the decal to just be visible on the outside of the surface? All searches i see wis about decals on solid surfaces which is a non issue in this regard. Adding a render to show what i mean.
Anyone have a suggestion? 
