Retopology: Are self intersecting edge loops legal When creating a topology mesh, are self intersecting loops a problem ?

If it is problematic, you can use "Paint" to communicate and mark how that edge should have been made with a simple stroke.


Image: The edge loop forms a fish shape on eyes.
The answer was given by Leander in the comments section:

You cant use Self Intersecting loops, that's a novice mistake.
Instead use &quot;Mask Topology&quot;.