What is mineral oil in skincare? What the evidence says
Mineral oil in skincare is a highly refined, petroleum-derived oil that sits on the skin’s surface and slows water loss. Cosmetic-grade mineral oil is refined to remove PAHs (in the EU, to set purity limits), has a long record of safe use, and rarely causes allergies.
This guide covers what it is, how cosmetic grade differs from industrial grade, the pore-clogging debate, how it compares with plant oils, and how to use it on damp skin after a bath or shower.
The short answer
Is mineral oil bad for skin? Not for most people. Cosmetic-grade mineral oil is highly refined to remove the PAHs behind IARC’s cancer listing for untreated industrial oils. It sits on the skin’s surface, slows water loss and rarely causes allergies. Pore-clogging risk looks low for refined grades, though human studies are limited.
What mineral oil in skincare actually is
The EU’s cosmetic ingredient database, CosIng, lists mineral oil under the INCI name Paraffinum Liquidum. Its entry describes “white mineral oil (petroleum)” as “a highly refined petroleum mineral oil” made of saturated hydrocarbons, mostly in the C15 to C50 range. The entry gives CAS numbers 8012-95-1 and 8042-47-5. Its listed functions are antistatic, emollient skin conditioning, skin protecting and solvent (CosIng).
Cosmetic grade vs industrial grade
Most safety worries come from mixing up these two grades.
The International Agency for Research on Cancer (IARC) classifies “untreated or mildly treated mineral oils” as carcinogenic to humans (Group 1). That listing covers oils from occupational settings such as metalworking and printing. Highly refined oils such as cosmetic and pharmaceutical grades are not in that group (IARC Monographs Volume 100F). Untreated and mildly treated oils keep PAHs that refining removes.
Cosmetic mineral oil is a different product. CosIng describes it as made by “intensive treatment” of a petroleum fraction with acid, hydrogenation, or both (CosIng). In the EU, mineral oils can only go into cosmetics if they meet PAH purity specifications set by the European Pharmacopoeia and EU Cosmetics Regulation 1223/2009 (Chuberre et al., 2019). The refining is designed to exclude substances with carcinogenic potential.
So “mineral oil causes cancer” mixes up two materials. The IARC classification is about the untreated industrial kind.
How to spot it on an ingredient list
Look for these names:
- Mineral Oil (the common US name)
- Paraffinum Liquidum (the INCI name used in the EU and on many K-beauty labels)
- Petrolatum (a related semi-solid made of mineral oil and waxes, sold as petroleum jelly)
- Baby oil (usually mineral oil plus fragrance; choose fragrance-free if scents bother you)
You can paste any INCI list into our ingredient checker to see what each ingredient does.
Is mineral oil safe for skin?
For most people, yes. A 2019 review in the Journal of the European Academy of Dermatology and Venereology, co-written by a L’Oréal scientist and three dermatologists, concluded that mineral oils have been used in skin and lip care “for many decades” because of their skin tolerance, and that clinical and epidemiological data confirm a long history of safe use (Chuberre et al., 2019).
Does it get absorbed into your body?
No. The same review concluded that mineral oils are so lipophilic that they do not penetrate human skin and are not systemically bioavailable. The review found no reported effects on internal organs from topical use of refined mineral oils.
A 2008 study measured this directly with confocal Raman spectroscopy on adult and infant forearms. Paraffin oil (mineral oil) and two vegetable oils reached only the top layers of the stratum corneum, the skin’s outermost layer, and showed similar profiles (Stamatas et al., 2008).
Allergy and irritation risk
The JEADV review concluded that mineral oils are non-allergenic. Mineral oil is chemically stable and does not oxidise or go rancid the way vegetable oils can (Chuberre et al., 2019). Any product can still irritate someone, so patch-test new products.
Does mineral oil clog pores?
Sources disagree mainly because of how pore-clogging was tested.
Older comedogenicity ratings came from the rabbit ear model. A 1990 rabbit-ear study used “a strongly comedogenic mineral oil” to produce follicle changes (Zimmermann, 1990). Results like this fed the “mineral oil clogs pores” idea.
More recent sources on refined cosmetic mineral oil reach a different conclusion. Consultant dermatologist Dr Natalia Spierings writes that “there is zero basic science evidence to suggest that mineral oil clogs pores or contributes to acne” (Spierings, 2020). Acne.org’s ingredient review also calls it non-comedogenic, while noting there is no direct research showing it improves acne (Acne.org).
Large, modern human studies on mineral oil and breakouts are scarce. What we have points to low pore-clogging potential for refined grades.
What this means if you’re acne-prone
Judge the whole formula. An occlusive film can hold other ingredients against the skin, and a heavy cream may contain waxes or butters that behave differently. Patch-test a new product on a small area for a few days. If breakouts are a persistent concern, a dermatologist can advise.
Mineral oil vs plant oils
Plant oils and mineral oil behave differently on skin. Here is how the two compare on the points the research covers.
| Mineral oil (cosmetic grade) | Plant oils | |
|---|---|---|
| Oxidation | Stable, does not go rancid (Chuberre 2019) | Can oxidise and go rancid (Chuberre 2019) |
| Allergy potential | Described as non-allergenic (Chuberre 2019) | Can be higher, since plant oils can oxidise (Chuberre 2019) |
| Skin penetration | Stays in the top layers of the stratum corneum (Stamatas 2008) | Similar profile to mineral oil in the same study (Stamatas 2008) |
| Occlusion | Less stratum corneum swelling than petrolatum (Stamatas 2008); oil-treated skin held more water in mid-stratum corneum layers (Choe 2020) | Modest, similar to mineral oil (Stamatas 2008) |
If you prefer plant oils, see Rooted Glow’s guide to oil cleansing for oily skin.
Occlusive, emollient, humectant: a quick primer
- Humectants such as glycerin and hyaluronic acid draw water into the skin.
- Emollients soften and smooth the skin’s surface.
- Occlusives such as mineral oil and petrolatum form a film that slows water loss.
Mineral oil works as both an emollient and an occlusive. CosIng lists it as “skin conditioning – emollient” and “skin protecting.”
Is mineral oil the same as petrolatum?
No, but they’re related. Petroleum jelly is a blend of mineral oil and waxes, both from petroleum (Spierings, 2020). Petrolatum is the stronger occlusive. In the 2008 Raman study, petrolatum swelled the stratum corneum by 40 to 60%, compared with 10 to 20% for paraffin oil and the vegetable oils (Stamatas et al., 2008). A 2020 study also found significant swelling only with petrolatum (Choe et al., 2020). The same study found that skin treated with mineral oil or plant oils held more water in the middle layers of the stratum corneum.
How to use mineral oil on damp skin
Occlusives don’t add water. They hold in what’s already there. That’s why timing matters.
The American Academy of Dermatology advises applying moisturiser while your skin is still damp after a shower or bath, after washing your hands, and whenever skin feels dry. The AAD prefers ointments and creams over lotions for dry skin and lists mineral oil and petrolatum among the ingredients to look for (AAD).
In practice:
- Limit baths and showers to 5 to 10 minutes, using warm water.
- Pat skin until it’s damp, not dripping.
- Apply your hydrating layers first, then a mineral-oil cream or a few drops of oil as the last step.
In the US, the FDA’s OTC skin protectant monograph lists mineral oil as an active ingredient at 50 to 100 percent (30 to 35 percent with colloidal oatmeal), for products that temporarily protect injured or exposed skin. Most cosmetic creams with mineral oil are not regulated as these drug products (21 CFR 347.10).
For more on winter routines, see our dry skin SOS guide.
Mineral oil in K-beauty: cleansing oils, balms and barrier creams
You’ll most often meet oils in a K-beauty routine at two points. The first is the oil step of a double cleanse. The second is a rich cream at the end of the night.
Cleansing oils and balms dissolve makeup and sunscreen. Emulsifiers in the formula turn the oil milky when you add water, so it rinses off. Some formulas use mineral oil. Many use plant oils or esters instead. Our guides to double cleansing vs single cleansing and Korean cleansing balms and oils go deeper, and Rooted Glow covers why and how to double cleanse.
This post contains affiliate links; we may earn a commission at no cost to you.
None of the three products below lists Mineral Oil or Paraffinum Liquidum in its published ingredient list. They show the alternatives: a cleansing balm and a cleansing oil built on esters and plant oils, and a cream that gets its occlusive feel from other ingredients. Two use synthetic hydrocarbon ingredients (synthetic wax; hydrogenated poly(C6-14 olefin) and polyisobutene), so ‘mineral-oil-free’ doesn’t mean petrochemical-free. If you’d rather avoid mineral oil for texture reasons, these three don’t use it.
- Cleansing balm: Round Lab 1025 Dokdo Cleansing Balm 50ml, about $34. A mineral-oil-free cleansing balm. Its base is ethylhexyl palmitate, isopropyl palmitate and sunflower seed oil, with synthetic wax for the balm texture (ingredient list, INCIDecoder).
- Cleansing oil: VT Ceramide Aqua Cleansing Oil 200ml, about $42. A mineral-oil-free cleansing oil built on esters (ethylhexyl palmitate, isopropyl palmitate) with sunflower, avocado and other plant oils, plus emulsifiers so it rinses off. It contains fragrance (ingredient list, VT Cosmetics).
- Last-step barrier cream: Round Lab Soybean QLA Barrier Cream 80ml, about $53. A mineral-oil-free barrier cream. It pairs glycerin with emollients and occlusive-feel ingredients such as hydrogenated poly(C6-14 olefin), silicones, synthetic beeswax and carnauba wax (ingredient list, INCIDecoder).
Browse moisturizers at Mirai →
For barrier-focused creams, see our ceramide cream guide.
6 mineral oil myths, checked
| Myth | What the evidence says | Source |
|---|---|---|
| Mineral oil causes cancer | IARC’s carcinogen listing covers untreated or mildly treated industrial oils. Cosmetic grades are highly refined and must meet PAH limits in the EU. | IARC 100F; Chuberre 2019 |
| It soaks into your body | Refined mineral oil does not penetrate human skin and is not systemically bioavailable. | Chuberre 2019 |
| It suffocates skin | The mineral oil film is modest. Mineral oil swelled the stratum corneum far less than petrolatum. | Stamatas 2008 |
| It clogs everyone’s pores | The rating comes largely from rabbit-ear tests. A dermatologist and Acne.org describe refined mineral oil as non-comedogenic, though human data is limited. | Zimmermann 1990; Spierings 2020 |
| Natural oils are always safer | Plant oils can oxidise and go rancid. Mineral oil does not, which is why the JEADV review concluded it is non-allergenic. | Chuberre 2019 |
| ”Mineral-oil-free” means better | Brands use the label for texture or marketing. The evidence above doesn’t show refined mineral oil harms skin. Choose by feel and the whole formula. | Chuberre 2019 |
Who mineral oil suits
Mineral oil may suit you if your skin feels dry or tight, if you live somewhere cold or dry, or if you want a simple, stable last step. People with fragrance or plant-oil sensitivities may also like it, because it has a low allergy risk.
You might prefer something else if you dislike a heavy or slippery feel. Lighter gel-creams with humectants may feel better on oily skin.
The bottom line
Cosmetic-grade mineral oil is a refined, stable occlusive that stays on the skin’s surface and rarely causes allergies. The cancer fear belongs to untreated industrial oils, not the refined grade in skincare. Use it as the last step on damp skin, and judge acne risk by the whole formula.
FAQ
Is mineral oil bad for your skin? No, for most people. Cosmetic-grade mineral oil is highly refined, stays in the skin’s outer layer, and a 2019 dermatology review describes it as non-allergenic.
Does mineral oil clog pores? Refined mineral oil has low pore-clogging potential, according to a consultant dermatologist and Acne.org’s ingredient review. The “comedogenic” label comes mostly from rabbit-ear tests. Because it’s occlusive, it can hold other ingredients against the skin, so judge the whole product.
Is mineral oil safe for acne-prone skin? Usually, yes. Patch-test new products and check the full ingredient list. A dermatologist can advise if breakouts persist.
Is mineral oil the same as Vaseline? No. Vaseline is petrolatum, a semi-solid blend of mineral oil and waxes. Both are occlusive, and petrolatum is the stronger of the two.
Is mineral oil carcinogenic? Untreated or mildly treated industrial mineral oils are classified as carcinogenic by IARC. Cosmetic mineral oil is highly refined, and EU rules require it to meet purity limits on PAHs.
What is Paraffinum Liquidum? It’s the INCI name for mineral oil. The EU CosIng database lists its functions as antistatic, emollient, skin protecting and solvent.
When should I apply mineral oil? Apply it to damp skin right after bathing, as the last step. The AAD recommends moisturising while skin is still damp.
Is mineral oil okay in a cleansing oil? Yes. It dissolves makeup and sunscreen, and emulsifiers in a well-made cleansing oil let it rinse off with water.
Sources
- Chuberre B, Araviiskaia E, Bieber T, Barbaud A. Mineral oils and waxes in cosmetics: an overview mainly based on the current European regulations and the safety profile of these compounds. J Eur Acad Dermatol Venereol. 2019;33 Suppl 7:5-14. https://pubmed.ncbi.nlm.nih.gov/31588613/
- European Commission, CosIng: Paraffinum Liquidum (entry 35850). https://ec.europa.eu/growth/tools-databases/cosing/details/35850
- IARC Monographs Volume 100F, Chemical agents and related occupations (includes “Mineral oils, untreated or mildly treated”). https://publications.iarc.who.int/123
- Stamatas GN et al. Lipid uptake and skin occlusion following topical application of oils on adult and infant skin. J Dermatol Sci. 2008;50(2):135-42. https://pubmed.ncbi.nlm.nih.gov/18164596/
- Choe C et al. Stratum corneum occlusion induces water transformation towards lower bonding state. Int J Cosmet Sci. 2020;42(5):482-493. https://pubmed.ncbi.nlm.nih.gov/32692411/
- Zimmermann R. The rabbit ear model as comedogenic test, part 3. Dermatol Monatsschr. 1990;176(1):55-61. https://pubmed.ncbi.nlm.nih.gov/2138094/
- American Academy of Dermatology. Dermatologists’ tips to relieve dry skin. https://www.aad.org/public/everyday-care/skin-care-basics/dry/dermatologists-tips-relieve-dry-skin
- Spierings N. True or false: mineral oil is the devil. 2020. https://drnataliaspierings.com/journal/2020/5/27/true-or-false-mineral-oil-is-the-devil
- US eCFR. 21 CFR 347.10, Skin protectant active ingredients, (l) Mineral oil. https://www.ecfr.gov/current/title-21/chapter-I/subchapter-D/part-347/subpart-B/section-347.10
- Acne.org. What is mineral oil and is it safe to use on acne-prone skin? https://www.acne.org/what-is-mineral-oil-and-is-it-safe-to-use-on-acne-prone-skin
