If anyone is struggling with angular cheilitis..
I used to get angular cheilitis (common in iron deficiency), but eventually it'd go away on its own during the winter. Then, i started getting it any time of year, especially if i triggered it by allowing my lips to get too dry.
Eventually it was never going away and i swear i was starting to look like the joker... The ONLY thing that finally got rid of it was dabbing a cotton swab with neosporin on the cracked corners of my mouth. This especially works overnight, as you don't disrupt the ointment.
This has been consistently working for me for at least 2 years now.
Hoping this helps someone!