Ingredient Guide
Petrolatum
Petrolatum is one of the most effective occlusive moisturizing ingredients available, with an FDA-recognized skin protectant status and decades of clinical use, despite ongoing consumer hesitancy.
Evidence profile
How confident is this recommendation?
Confidence is shown in plain categories, not a numerical trust score.
Extensive clinical evidence and FDA skin protectant recognition; among the most effective occlusive ingredients studied.
Even lower percentages within a cream formula contribute meaningful occlusive benefit.
This is where petrolatum’s evidence and clinical use are strongest.
Its heavier texture makes it more suited to targeted or overnight use for many people.
This is more a matter of sensory preference than an efficacy or safety question.
What it is
One of skincare’s most effective, most misunderstood ingredients.
Petrolatum is a purified mixture of hydrocarbons that forms an occlusive film on the skin’s surface, and it has been shown in research to reduce water loss more effectively than many other common moisturizing ingredients, including several plant oils.
Despite a persistent belief that it ‘suffocates’ skin or clogs pores, cosmetic-grade petrolatum used in skincare is highly purified and is not considered comedogenic in most research; the concern largely stems from confusion with lower-grade industrial petroleum products, which are not used in cosmetics.
Evidence at a glance
Useful evidence, with important limits.
Occlusion and water loss reduction
Extensive research supports petrolatum as one of the most effective occlusive ingredients for reducing transepidermal water loss.
Limit: Its heavier texture and shine may not suit everyone’s daytime preferences.
Skin protectant and barrier support
FDA-recognized as a skin protectant, with established use for protecting compromised or healing skin.
Limit: Best suited to targeted use on very dry, cracked or compromised areas, or as an overnight treatment.
Concentration guide
Often used at or near full concentration in dedicated products.
| Concentration or form | How to interpret it | Practical use |
|---|---|---|
| Near 100% (pure petrolatum ointment) | Maximum occlusive effect. | Well suited to very dry patches, chapped lips or overnight barrier repair. |
| As a component within a cream or lotion | Contributes occlusive benefit alongside other ingredients. | A more everyday-friendly texture for broader use. |
Skin Candid view: Choose pure petrolatum for targeted, intensive repair (like very dry hands or lips) and a petrolatum-containing cream for more everyday, broader use.
How to use it
Use for targeted repair or as an overnight treatment.
No need to fear it: Despite popular myths, cosmetic-grade petrolatum is not considered comedogenic in most research and remains one of the safest, most effective moisturizing ingredients available.
Using it with other ingredients
Reduce routine complexity before testing combinations.
Hyaluronic Acid
Apply hydrating serums first, then seal with petrolatum for maximum effect (the ‘slugging’ approach).
Ceramides
Both support barrier repair, often used together for significantly compromised skin.
Side effects and caution
Very well tolerated with an excellent safety record.
- Petrolatum is considered one of the safest, most extensively studied moisturizing ingredients available.
- True allergic reactions are rare.
- Its heavy texture and shine are a common reason people avoid it for daytime use, though this is a preference rather than a safety issue.
Frequently asked questions
Petrolatum, without the pressure to tolerate everything.
Does petrolatum clog pores?
Cosmetic-grade petrolatum is not considered comedogenic in most research; this common concern is largely a myth.
Is petrolatum the same as petroleum jelly?
Yes, these terms are generally used interchangeably in skincare.
What is ‘slugging’?
A popular technique of applying petrolatum as the last step of a nighttime routine to seal in hydration; it’s a practical application of petrolatum’s well-established occlusive properties.
Related decisions
Continue from the question you are actually trying to solve.
Sources reviewed
Primary evidence and medical guidance behind this page
- NIH NCBI Bookshelf (StatPearls): Moisturizers
- American Academy of Dermatology: Dermatologists’ top tips for relieving dry skin
Sources support the general editorial conclusions shown here. They do not prove that every product containing this ingredient will produce the same result.