Tizona
looks like AC could be caused by a fungus bacteria or other factors
If I were you I would take some coconut oil and mix in some thyme essential oil and Melaleuca essential oil, and apply it to the affected area multiple times throughout the day
thyme has very very strong Broad-spectrum antifungal and antibacterial properties, as does Melaleuca (tea tree). but don't get a crappy low-quality brand of essential oil, get something good like 'Young living' brand