Olive oil has a comedogenic rating of 2 on a scale of 0 to 5, placing it in the “moderately low” range. That means it won’t clog pores for most people, but it can cause breakouts if your skin is already acne-prone or oily. Whether olive oil works for your face depends largely on your skin type and how your pores respond to its dominant fatty acid.
What a Rating of 2 Actually Means
The comedogenic scale runs from 0 (won’t clog pores at all) to 5 (highly likely to clog pores). A rating of 2 sits just below the midpoint, which is why you’ll see olive oil described as “slightly comedogenic.” For context, coconut oil scores a 4, mineral oil scores a 0 to 1, and argan oil scores a 0. Olive oil lands in the same territory as several popular skincare oils, meaning it’s tolerated well by many people but is not a universally safe bet for acne-prone skin.
It’s worth noting that these ratings originated from tests performed on rabbit ears decades ago, using histological sectioning to evaluate pore-clogging potential. The method has known limitations: rabbit skin reacts differently than human skin, and the test conditions don’t perfectly replicate how you’d actually use an oil on your face. The numbers are a useful starting point, not a guarantee.
Why Oleic Acid Is the Key Factor
Olive oil is 55 to 83% oleic acid, with only 3 to 21% linoleic acid. That ratio matters for your skin. Oleic acid is a heavier, thicker fatty acid that penetrates the outer skin layer (the stratum corneum) by disrupting its lipid structure. Research published in Molecular Pharmaceutics found that oleic acid adversely affected two measures of skin barrier integrity and caused the lipids in the outer skin layer to become more fluid and disordered. That penetration ability is actually why oleic acid is used in pharmaceutical products to help drugs absorb through skin.
For someone with dry or normal skin, this penetrating quality can feel deeply moisturizing. For someone whose pores are already congestion-prone, that same disruption can trap sebum and dead skin cells inside the pore, leading to blackheads or breakouts. Skin irritation has been reported at oleic acid concentrations as low as 4.5 to 10%, and olive oil far exceeds that threshold.
The Real Benefits for Skin
Olive oil isn’t all risk. A clinical study published in the Journal of Clinical Medicine found that extra virgin olive oil improved skin barrier function in healthy adults, increasing skin hydration and reducing redness and skin temperature. It also promoted faster skin cell turnover, meaning the outer layer renewed itself more quickly compared to both untreated skin and skin treated with petrolatum (the base of most petroleum jelly products).
In clinical practice, olive oil is used to manage dry skin in elderly patients, soften earwax, and occasionally treat inflammatory conditions like eczema and psoriasis. Its anti-inflammatory properties are well documented. The issue isn’t that olive oil is bad for skin in general. It’s that using it on your face, where pores are smaller and sebum production is higher, introduces a specific clogging risk that doesn’t apply to, say, your elbows.
The Malassezia Problem
Beyond clogged pores, olive oil can feed a specific type of yeast called Malassezia that naturally lives on your skin. This yeast thrives on oils, and olive oil is an especially good growth medium for it. One case study documented Malassezia folliculitis (a condition that looks like acne but is actually a fungal infection) that was traced back to olive oil use. The yeast was only successfully cultured in the lab when olive oil was added to the growth medium.
If you’ve ever broken out from olive oil in a pattern that looks like small, uniform bumps rather than typical whiteheads or blackheads, fungal folliculitis is a possible explanation. This distinction matters because fungal breakouts don’t respond to standard acne treatments.
Who Should Avoid It on the Face
If your skin is oily, combination, or breakout-prone, olive oil is a poor choice for facial use. The high oleic acid content, moderate comedogenic rating, and potential to feed skin yeast all work against you. This applies to using it as a moisturizer, as a makeup remover, or in the oil cleansing method.
Contamination is another concern. The olive oil market has well-documented purity issues. One analysis found that Italy sells roughly three times as much olive oil as it actually produces, and only about 4% of exported Italian olive oil is genuinely pure. Adulterated olive oil may contain other oils with different (and potentially higher) comedogenic ratings, making your results unpredictable.
Lower-Risk Alternatives
If you like the idea of a facial oil but want to minimize breakout risk, oils with higher linoleic acid and lower oleic acid content are generally safer for acne-prone skin. Some options to consider:
- Jojoba oil: Comedogenic rating of 2, but technically a liquid wax that closely mimics your skin’s natural sebum
- Hemp seed oil: Comedogenic rating of 0, high in linoleic acid
- Sunflower seed oil: Comedogenic rating of 0, rich in linoleic acid and well-studied for barrier repair
- Grapeseed oil: Comedogenic rating of 1, lightweight with a high linoleic acid ratio
For dry skin that isn’t acne-prone, olive oil remains a reasonable option. It genuinely improves hydration, supports barrier function, and promotes skin cell renewal. Just use extra virgin olive oil from a reputable source, and patch test on a small area of your face for a week before committing to regular use.