Hello, I also suffer from angular stomatitis. Too bad. The corners of the mouth will tear open, and the mouth will be red and peeling. I read it online. I put medical gauze and normal saline on my mouth for 20 minutes, and then put on lip balm. It still helps. We have folk remedies here. When steaming rice with our wooden retort, the steam water flowing out of the lid is applied to the corners of the mouth while it is hot (you can also put a kitchen knife on the retort to heat it, and wipe it immediately if there is steam water on the knife). Very effective. I used it twice and my mouth won't crack. It may be that steamed rice produced some vitamins. The two methods are used together. I wonder if you have our wooden retort, the one used in restaurants.