When I ran to CVS last night to address what everyone is suggesting might be mouth leaks with my leakage report number being higher than it should be, I bought these foam "toe bandages," I believe they're called. They are tubular, three in a pack. I think the two smallest ones may be slightly different in size, but just an iota. They are tubular with no opening and are made of thin foam that you are supposed to cut to size to put on your toe as a bandage so it doesn't get hurt by any of the toes on either side.
Well, I took the straps off the "barrel" last night and slipped one of these babies over the bottom of the straps and slid it up to where it almost reaches to top of the side strap. This morning, I awoke with NOTHING but right above where the bandage stopped. It was barely noticeable. But the "C" mark/swoosh lines were not there at all!!!! I was amazed it worked.
One line I wrote may be misleading. When you place the tubes on the straps, make sure you leave them as close to the bottom of the strap so that they cover the part that makes that "C" on your face. It will still almost reach to the top of the strap anyway, but that "C" swoosh line is gone, as were any other lines that the now covered area of the strap would have left...at least it was for me this morning.