What is Evening Primrose Oil?
Evening Primrose Oil (INCI name: Oenothera Biennis Oil) is a plant- or seed-derived oil. A GLA-rich oil valued for barrier support, rated 2/5. Prone to oxidation, so freshness matters.
You may see it on labels as Evening Primrose Oil, Oenothera Biennis Oil, Evening Primrose, so it can hide under more than one name in an ingredient list.
Where Evening Primrose Oil shows up
You'll most often find Evening Primrose Oil in facial oils, cleansing balms, moisturisers, hair products, and many products marketed as natural. Separately from clogging, its irritancy is rated 2/5 — low, so it's unlikely to sting or sensitise on its own.
Is Evening Primrose Oil bad for acne-prone skin?
Because it barely registers on the comedogenic scale, Evening Primrose Oil is generally a safe pick for breakout-prone skin and is often recommended as a gentler alternative to heavier ingredients.
Note for fungal-acne (malassezia) sufferers: Evening Primrose Oil is commonly avoided in fungal-acne routines, since it falls into the fatty-acid or ester families the yeast can feed on. The evidence there is looser than for comedogenicity — see our fungal-acne checker for context.