Is mineral oil comedogenic?

Short answer

Conflicting or context-dependent evidence

Mineral oil is the one ingredient on this site recorded as genuinely contested. Its comedogenic status is disputed in the published cosmetic dermatology literature — a commentary in a peer-reviewed journal is devoted to re-opening the question — and this project reports that dispute rather than resolving it. It is recorded as conflicting or context-dependent evidence, which describes the state of the literature and is not a middling score.

Recorded as Mineral Oil · dataset record mineral-oil · reviewed 2026-08-06

What the evidence actually is

Secondary or reference source

A reference or regulatory source rather than a study that measured comedogenicity. In this dataset that most often means the source establishes only that the name refers to a recognised cosmetic ingredient.

What the sources report

The comedogenic status of mineral oil is contested in the published cosmetic dermatology literature: a commentary in a peer-reviewed journal is devoted to re-opening the question. PubMed lists no abstract for that commentary, so this record cites it as evidence that the classification is disputed and does not attribute a conclusion to it.

What this does not cover

This record reports a disagreement in the literature rather than a measured result, and cosmetic-grade material can differ from whatever was originally assessed. No finished-product conclusion follows.

Why people ask about Mineral oil

Mineral oil sits at the centre of a long-running argument between the ingredient-avoidance side of skincare, where it is treated as a definitive pore-clogger, and cosmetic chemists, who generally defend it. Both sides argue confidently and at length, which is precisely the situation in which someone goes looking for a neutral summary. It is also very widely used, and appears on European labels under a name most people do not recognise as mineral oil at all.

Where the circulating rating for Mineral oil comes from

This is the clearest illustration on the site of why no 0–5 number is printed anywhere. The published literature contains a commentary specifically re-opening the question of whether mineral oil deserves its comedogenic classification. PubMed lists no abstract for that commentary, so this project cites it only as evidence that the classification is contested, and attributes no conclusion to it. A single digit cannot carry the sentence 'specialists are still arguing about this, and we could not read the full text of the paper in which they argue it' — but that sentence is the honest state of the evidence.

Names Mineral oil appears under

Declared as Mineral Oil in the United States and very often as Paraffinum Liquidum on European labels, which is the same material under a different naming convention. Liquid paraffin, paraffin oil and white mineral oil are also in use. Petrolatum is a different declared ingredient and is not in this dataset.

Recognised in this dataset as Mineral Oil, and through the recorded aliases paraffinum liquidum, liquid paraffin, paraffin oil, white mineral oil. Matching is exact: there is no fuzzy matching anywhere in this tool, so a name not listed here is reported as unrecognised rather than guessed at.

Questions about mineral oil

Is paraffinum liquidum the same as mineral oil?

Yes. It is the name used on European ingredient declarations for the same material, and this tool recognises it as an alias so a label using either name reaches the same record.

Why is mineral oil listed as conflicting instead of getting a rating?

Because conflicting is what the sources actually show. Assigning a number would require picking a side in a dispute that is live in the peer-reviewed literature, and this project has no basis for doing that.

Is cosmetic mineral oil the same as industrial mineral oil?

Cosmetic-grade material can differ from whatever was originally assessed, which is one of the reasons this record reports a disagreement rather than a measured result. This dataset does not track grade, so it cannot tell you which material any particular study used.

Sources cited on this page

These are the sources attached to this record. Nothing on this page is drawn from anything else.

  • Is mineral oil comedogenic?

    DiNardo JC. Journal of Cosmetic Dermatology, 2005. Peer-reviewed. doi:10.1111/j.1473-2165.2005.00150.x

    A short commentary in the cosmetic dermatology literature that explicitly re-opens the question of whether mineral oil deserves its comedogenic classification. PubMed lists no abstract for this item, so this dataset cites it only as evidence that the classification is contested in the literature, and does not attribute a specific conclusion to it.

  • A re-evaluation of the comedogenicity concept

    Draelos ZD, DiNardo JC. Journal of the American Academy of Dermatology, 2006. Peer-reviewed. doi:10.1016/j.jaad.2005.11.1058

    Applied a modification of the Mills and Kligman human assay to finished cosmetic products formulated with ingredients previously identified as comedogenic. Reported that finished products using comedogenic ingredients are not necessarily comedogenic. This is the single most important source in this dataset: it is the direct evidence that an ingredient-level match cannot be converted into a finished-product conclusion.

Record reviewed 2026-08-06 by pore-checker prototype dataset compilation (not clinically reviewed).