K-Beauty Glossary
What is Fungal Acne (Malassezia Folliculitis)?
Yeast-driven bumps that look like acne
Fungal acne isn't actually acne — it's Malassezia folliculitis, caused by overgrowth of yeast (Malassezia) in hair follicles. Looks like small, uniform, itchy bumps on forehead, chest, and back. Traditional acne treatments (salicylic acid, benzoyl peroxide) don't work, and oil-based skincare makes it worse. Treatment: antifungal topicals (ketoconazole, selenium sulfide), reduced occlusion, fatty-acid-restriction in products (fungal-acne-safe = no lauric/myristic acids, polysorbates, fatty alcohols past C14).