Yeah, I'm surprised Aquaphor is non-clogging to the pores, but blended at 2% it isn't. It's very pleasant and hydrating.
Malassezia isn't an infection, it's an immune system deficiency, or it's simply a yeast cell that evolved a long time ago and before humans even existed, in a way that allows it to tinker with the host's immune system and avoid detection.
It's treated with Nizoral 1% shampoo (OTC in the US but you can buy it only online), and OTC 2% Nizoral everywhere else. The active ingredient is ketoconazole. Nizoral is effective on malassezia yeasts and nothing else.
Hegor 150 climbazole shampoo, where the active ingredient is climbazole, is sold in the US only on eBay, but is OTC in Europe, is milder to the skin and more effective than Nizoral on malassezia.
You can easily do a differential diagnosis for malassezia. About 3-4 days after using Nizoral 1% shampoo on a daily basis (where you let the shampoo-lather stay on your head for 5-10 minutes), dry off, get dressed, and then stand in very bright sunlight and scratch your scalp -- if the air around you has a small cloud of dandruff looking skin flakes, then you have a good diagnosis for a malassezia-induced skin condition, which most people call seb derm because it appears as red bumps on the skin or around hair follicles, or as slightly thickened areas of skin that are itchy. It hides from detection so you can't really determine whether or not it's a problem, except by trying to treat it and then seeing what happens.