Is Petroleum Jelly Bad For You?

Few skincare ingredients have been around as long as petroleum jelly, and few have accumulated as much undeserved suspicion. It keeps showing up on "dirty" ingredient lists, yet dermatologists keep recommending it. So, what's going on? Is petroleum jelly bad for you?

The short answer is that petroleum jelly is one of the most studied occlusive ingredients in skincare, and most of the concerns circulating about it don't hold up under scrutiny. That said, it's not the right fit for everyone, and knowing how it works makes it easier to use effectively.

This guide explains what petroleum jelly is, how it interacts with your skin, and the situations where another product may be a better fit.

 

Key Takeaways:

• Cosmetic-Grade Petrolatum: The petrolatum used in skincare is a highly purified ingredient that differs significantly from raw petroleum. The safety concerns floating around online largely don't apply to the refined version used in skincare.
• How It Works: Petroleum jelly works by sealing moisture in, not adding it. It's the occlusive with the most data behind it, and it's been used in dermatology for a very long time.
• How To Use It: Applied over clean skin and well-tolerated products, petrolatum a genuinely useful tool. Applied over dirty skin or products your barrier doesn't agree with, it amplifies the problem.

 

 

An Overview Of What Petrolatum Is

Petrolatum is a semi-solid mixture of mineral oils and waxes derived as a byproduct of petroleum refining. Mineral oil and liquid paraffin are a few other ingredients you might spot on an ingredient list with the same origin story. Because of that non-glamorous sourcing, they tend to be economical ingredients, which is part of why you find them in everything from drugstore body lotions to prescription wound care.

 

Petroleum Jelly Benefits For Skin

As a skincare ingredient, petrolatum is an occlusive. It works by forming a protective layer on the skin's surface that slows transepidermal water loss (TEWL). Plus, it doesn't add water to the skin; it holds in what's already there. That mechanism makes it particularly valuable for dry, compromised, or irritated skin that struggles to retain moisture on its own (Kamrani et al., 2024). It's also worth noting that petrolatum has the most clinical data behind it of any occlusive ingredient in skincare, which is a pretty big deal.

 

Can I Put Petroleum Jelly On My Face?

Generally, you can, with a caveat. Petroleum jelly on the face works well for many people, particularly as an evening occlusive step or for targeting dry patches. But because it's such a reliable seal, what's underneath it matters. Applying it over a thoroughly cleansed face with products your skin already tolerates is the right setup. But placing it over congested skin, heavy residue, or products that don't agree with you can amplify whatever's already going on. The standard recommendation is to use a gentle facial cleanser first, follow up with your usual skincare treatments, and apply petroleum jelly as the final step.

 

So, Is Petroleum Jelly Good For Your Skin?

For most people, yes, with the right application approach. The ingredient's ability to reinforce the skin barrier and reduce moisture loss is well-documented, and it's recommended by dermatologists for a range of uses, from dry skin maintenance to post-procedure wound care (Kamrani et al., 2024). That said, petroleum jelly works best as part of a routine rather than as a standalone item. It's best when applied as the last step after a lightweight moisturizer, sealing in the hydration your products delivered. The exception is when skin is very compromised; in that case, using it solo is a reasonable call. As a very pure ingredient, there's no risk of sealing in a potential irritant, making it one of the safer choices when skin is at its most vulnerable.

 

Addressing Two Big Myths About Petrolatum

Petrolatum has a bit of a PR problem. The two charges that come up most often, carcinogen and pore-clogger, sound serious enough that a lot of people just drop it from their routine without looking any further. Let's take a closer look.

 

Is Petrolatum Bad For Skin?

This is probably the most alarming question associated with petroleum jelly, and it stems from a real but often misapplied concern. To start, the main issue is that crude petroleum contains polycyclic aromatic hydrocarbons (PAHs), which are classified as potential carcinogens. But the petrolatum used in cosmetics is not crude petroleum.

USP-grade petrolatum, the kind used in topical skincare, undergoes hydrogenation and extensive purification to remove impurities, including PAHs. It must meet specific purity standards set by the FDA, including defined consistency and melting point ranges. After years of safety review by multiple regulatory bodies, no evidence has implicated properly refined petrolatum as a carcinogen.

The EU's Dangerous Substance Directive does list petrolatum as a Category 2 carcinogen under its CMR classification, but this is a direct consequence of all petrolatum grades sharing a single CAS number, regardless of purity level. Notably, the CMR itself states that the classification does not apply when the full refining history is known, and the substance can be shown not to be a carcinogen. USP-grade cosmetic petrolatum meets that standard. TL;DR, the concern is legitimate for unrefined petroleum. But it doesn’t really apply to the ingredient in your skincare.

 

Does Petrolatum Clog Pores?

Visually, it makes sense that people would assume this. Classic Vaseline is thick, gooey, and looks like it should be clogging everything in sight. But petrolatum doesn't actually exhibit comedogenic tendencies in standard rabbit ear testing, which is the established screening method for comedogenicity in cosmetic ingredients (Fulton et al., 1984).

Here's the important nuance, though. Petrolatum is an excellent occlusive, which means it seals in whatever is on the skin underneath it, including ingredients that may be irritating or comedogenic. If your routine includes something your skin doesn't tolerate well, or if cleansing isn't thorough, petrolatum can make those issues more pronounced. The short version? Petrolatum doesn't necessarily clog pores, but it's not a free pass to apply it over anything. Your best bet is to start with clean skin and products you know your skin handles well.

Fun Fact! The rabbit ear assay used to test comedogenicity, where potential pore-clogging is assessed by applying an ingredient to a rabbit's ear canal, was developed in the 1970s and is still the standard first-pass screening method today. It's not a perfect model (rabbit ear tissue behaves differently from human facial skin), and it's not as commonly used today given the broader move away from animal testing in cosmetics. That said, the historical data it generated still serves as a useful reference point when evaluating ingredients.

 

 

Petrolatum vs. Petroleum: Is Petrolatum The Same As Petroleum?

The confusion between these two terms is responsible for a lot of the unwarranted concern around this ingredient. Petroleum is crude oil, a naturally occurring raw material extracted from the earth with a complex mix of hydrocarbons, including PAHs. Most of what gets refined from it ends up as some form of fuel, with only a small fraction processed further for other uses like skincare.

In contrast, petrolatum is a refined derivative of petroleum that has been processed, purified, and standardized to meet cosmetic and pharmaceutical safety requirements. By the time it shows up in skincare, it's a fundamentally different material from what came out of the ground. The shared etymology is where the confusion starts, and unfortunately, that confusion has been amplified by beauty marketing that conflates the two without much attention to the chemistry.

 

Petroleum Jelly For Dry Skin, And Who Else Can Benefit

Dry skin is probably the most intuitive use case. Petrolatum's occlusive seal is particularly helpful for skin that struggles to hold on to moisture, and a petrolatum balm applied over dry patches can provide meaningful relief, especially overnight. However, sensitive or compromised skin can also benefit, since petrolatum for skin is one of the more inert ingredients. In other words, it has a low allergen profile and is widely used in wound care and post-procedure settings for exactly that reason (Kamrani et al., 2024).

Oily or acne-prone skin is where it gets more individual. Petrolatum itself isn't going to cause breakouts, but the heaviness of the texture may not suit everyone. Lighter occlusives might be a better fit here.

 

 

Final Thoughts

Petroleum jelly has held up remarkably well under decades of scrutiny, which is more than can be said for a lot of ingredients that get significantly better press. Most importantly, the carcinogen concern doesn't apply to cosmetic-grade petrolatum. From there, the pore-clogging concern is largely a visual assumption that testing hasn't supported.

What remains is a well-studied, affordable, effective occlusive ingredient with a real place in barrier care routines, particularly for dry, sensitive, or compromised skin. Use it on clean skin, layer it thoughtfully, and don't let the name spook you. 

 

Frequently Asked Questions About Whether Petroleum Jelly Is Bad For You

Can I use petroleum jelly every day?

Daily use is fine for many people, particularly as an evening occlusive step. Adjust based on how your skin responds. On the flip side, you don’t HAVE to use it every night to see benefits. Think of this as a “use as needed” product.

 

Does petroleum jelly clog pores?

Petrolatum itself has not shown comedogenic activity in standard testing. That said, apply it over clean skin and products you know your skin tolerates.

 

Is petroleum jelly safe to use around the eyes?

Many people use it on the eye area for dryness. It shouldn't get into the eyes directly, but as an external application, it's generally well tolerated.

 

Can I use petroleum jelly on my lips?

Yes, it's one of the more common uses, and its occlusive properties help reduce moisture loss from the lip area.

 

Can petroleum jelly be used under makeup?

In very small amounts on very dry areas, some people do. A heavier application will likely affect how makeup wears and sits. We would also advise against using large amounts of petrolatum-based balms under sunscreen as it could compromise coverage.

 

What's the difference between petroleum jelly and petrolatum on an ingredient list?

They're the same thing. "Petrolatum" is the INCI (ingredient list) name; "petroleum jelly" is the common consumer name.

 

References:

1. Fulton Jr, J. E., Pay, S. R., & Fulton III, J. E. (1984). Comedogenicity of current therapeutic products, cosmetics, and ingredients in the rabbit ear. Journal of the American Academy of Dermatology, 10(1), 96-105.
2. Kamrani, P., Hedrick, J., Marks, J. G., & Zaenglein, A. L. (2024). Petroleum jelly: A comprehensive review of its history, uses, and safety. Journal of the American Academy of Dermatology, 90(4), 807-813.