What's it mean?

A newly-changed wafer/bag/wax ring matched fairly exactly to the wafer cutout:
Often this produces a bit of a ‘puffy’ white wax ring protruding above the wafer. Is this normal/acceptable/alarming?
I’m starting to think I need to use double rings. I generally do feel a bit of burning under my stoma, and see a thin bit of brown around it.
Thanks, 
Riff

So you're using a 2 piece bag? I presume you mean the white puffy stuff is between your stoma and the edge of your bag cutout? 

Moisture turns the edge of of the cut out ring white. Is that what you mean?

Yes, exactly.

Pretty sure that's just your barrier ring reacting to moisture as it swells to fill in any little gap. I use a 1 piece and I'll have that same thing sometimes if I don't get the size just perfect or the barrier ring is not perfectly flush with the bag cutout and some gets "squished between your bag and stoma....if that makes sense. 🤔 😁 I've never noticed any less wear time or issues.

Please help me define our terms.
Barrier ring = the wax ring?
Wafer = the adhesive cloth and the plastic disc that sits around the stoma, cut to size?
Is this correct?

If using a 2 piece system, to me that's correct. 😁 If using a 1 piece system, you'd have the barrier(wax) ring and then your bag that has the wafer(sticky stuff) already attached.