Hello; I am an Audiologist.
An Otolaryngologist (Ear, Nose & Throat Dr.) can prescribe an appropriate cream, ointment, or drops, based on the diagnosis of whether the otitis is caused by a bacteria, fungus or other skin disorder. Getting an accurate diagnosis is the best way to ensure that you receive appropriate treatment.
MiraCell is an oil developed by an ENT Dr. that seems to be beneficial for many skin disorders of the ear. I have used it on other body parts, and it works well. As I got the link, I see that they have expanded their product line and may have to try their creams!
The Sahara Ear Dryer was also developed by an ENT Doctor to dry and soothe the ear canal with safe temperature, sound and air pressure levels. It helps inhibit the growth of bacteria and fungi.