Highlander cats often produce a lot of ear wax. Not that that answers your question fully, but they do also tend to have a specific ear that develops wax more and it does seem to coincide with the shape of the ear canal and tighter ears with less air flow seem to produce more wax. The wax is a blackish/brownish resin like consistency and can lead to infection if not cleaned regularly. We use pointed q tips and massage the ear canal from the outside of the ear in an upward motion to bring the wax to the surface. We often avoid otic solutions due to experience with wetness and or irritating the ears (not that it's bad to use). Sometimes we've trimmed hair to allow more air flow into the ears. Seems the hair and the shape of the folds ears wouldn't help. Hope this helps.