TL;DR almost all oils make seb derm worse on what/why certain ingredients exacerbate malassezia-caused skin conditions. This is the most comprehensive collection of information and research on the topic I’ve found online thus far.

Almost all oils, and many oil-based compounds such as fatty acids and esters, can feed malassezia. Many are common skincare ingredients. Read ingredient labels and when in doubt, go for things with fewer ingredients.

There are ingredient checkers online (,, etc.) that can help you weed out products with problematic ingredients. Note that if it’s labelled as bad for fungal acne, it’s also bad for seborrheic dermatitis.