Inner glow, but invisible layer

[Grum999]

There’s a method that allows you to do it I think
But not sure that will do the trick for you as I didn’t use photoshop for more than 20 years now

1. Create your paint layer named, for example original layer and draw your stuff
   
   
2. Apply the layer style “Inner glow” to layer original layer
   
   
3. Create a Quick-Group on the layer original layer (Ctrl+G or right-click on layer and then Group>Quick Group)
   
   
4. Set blending mode of original layer to Erase
   
   

Final result: only the layer style is visible

After, according to your layer content I don’t know if result it will be ok or not…

Grum999