You can help speed up the healing process of angular cheilitis by applying some coconut oil or petroleum jelly to the angular cheilitis and it will help heal it and make it feel better as well.
The coconut oil or petroleum jelly will also help protect the angular cheilitis from saliva which can irritate it and make it worse or take longer to heal.
Applying some Lip Balm to the angular cheilitis can also help with the healing process or applying some moisturizing cream to the area.
Most cases of angular cheilitis will go away within 3 to 4 weeks but doing the above things can sometimes help speed up the healing process of the angular cheilitis and it might go away within a week instead of a month.