Boysie gets recurring lip fold dermatitis, and we too are resisting the op (I'm always worrying he won't come round). I would suggest that when cleaning his lower lip, to try to open out the offending folds, as often this is where food and water collect and make things worse. I've just got some Thornit and have also started to add some organic apple cider vinegar to his water, to try and 'manage' this. He didn't have it when we rescued him, his first attack was about 6 months after we got him - makes me wonder if we have been doing something wrong...........