Does Vaseline Actually Help Eyelash Growth?

What the Science Says About Vaseline and Lashes

Petroleum jelly has been a staple in skin care since the 1870s. It works as an occlusive barrier, meaning it forms a protective layer on the surface of skin and hair that locks in existing moisture and prevents water loss. This mechanism is well-documented in dermatology literature and is the reason Vaseline is so effective at treating dry, cracked skin.

But here is the critical distinction: coating the surface of a lash is not the same as stimulating the follicle beneath the skin. Vaseline molecules are far too large to penetrate the lash follicle. They sit on the outer cuticle of the hair shaft, smoothing it and sealing in hydration. The American Academy of Dermatology (AAD) recognizes petroleum jelly as an effective moisturizer and skin protectant, but no dermatology organization has ever classified it as a hair growth treatment.

No peer-reviewed study published in a dermatology or ophthalmology journal has demonstrated that Vaseline stimulates eyelash growth. Not one. The confusion likely comes from the fact that well-conditioned lashes look better. When your lashes are hydrated and coated in a thin layer, they reflect more light, appear slightly thicker, and break less often. That is a real cosmetic benefit, but it is conditioning, not growth.

According to the Journal of Cosmetic Dermatology, occlusive agents like Vaseline are best understood as protective barriers that maintain the health of existing hair. They do not interact with the biological processes that determine how long or how quickly your lashes grow. Those processes happen deep in the follicle, and they require active signaling molecules to change.

Can I Use Vaseline as a Lash Serum?

You can use Vaseline on your lashes, but it is not a replacement for a lash serum. The two do fundamentally different things.

Vaseline is a conditioner. It coats the lash shaft, reduces friction, prevents moisture loss, and protects against environmental damage. Over time, this means fewer broken or brittle lashes, which can create the appearance of a slightly fuller lash line. If your lashes are dry and prone to snapping off, petroleum jelly will help them stay intact long enough to reach their full natural length.

A lash serum, on the other hand, is a growth treatment. Peptide-based serums deliver active ingredients like myristoyl pentapeptide-17 directly to the follicle, stimulating keratin production and supporting the biological processes that determine lash length, thickness, and density. This is a fundamentally different mechanism. For a deeper explanation of how growth serums work, see our guide on whether lash serums really work.

Think of it this way: Vaseline is like a leave-in conditioner for your hair. A lash serum is like a scalp treatment that promotes new growth. Both have value. They are just solving different problems. If your lashes are healthy but you want them longer and thicker, Vaseline alone will not get you there.

Vaseline vs. Lash Serums: What Actually Works

The difference between Vaseline and a lash serum comes down to where they work and what they do. Here is how the categories compare:

Factor	Vaseline (Petroleum Jelly)	Peptide Lash Serum
Primary action	Coats lash surface, locks in moisture	Stimulates keratin production at the follicle
Clinical growth evidence	None	Moderate to strong
Where it works	Lash shaft (external surface)	Hair follicle (beneath the skin)
Visible results	Softer, shinier lashes in 2-4 weeks	Measurable length and density in 6-12 weeks
Reduces breakage	Yes	Yes (plus new growth)
Side effects	Minimal (possible blurry vision if in eye)	Very low for peptide formulas
Cost	Under $5	$20-$65/month
Best for	Conditioning dry, brittle lashes	Actual growth: longer, thicker, denser lashes

Peptide serums target the growth cycle at a biological level. They signal follicle cells to produce more keratin, extend the anagen (growth) phase, and reduce premature shedding. Vaseline does none of this. It is not a question of one being "better" in the abstract. They serve different purposes. For a detailed breakdown of peptide ingredients, see our best peptide lash serums guide.

If you are on a tight budget and just want healthier-looking lashes, Vaseline is a perfectly reasonable option. If you want lashes that are measurably longer and fuller than what nature gave you, a peptide serum is the evidence-backed path. And yes, you can use both: apply Vaseline as a conditioner during the day and your serum at night. Learn more about how these ingredients interact in our ingredient guide.

How to Use Vaseline on Your Eyelashes Safely

If you want to try Vaseline as a lash conditioner, here is how to do it safely:

Start with clean lashes. Remove all makeup, including mascara, before applying. Petroleum jelly over dirty lashes can trap bacteria and irritants against the skin around your eyes. Use a gentle, oil-free cleanser and pat dry.

Apply a thin layer. Less is more. Scoop a tiny amount (about the size of a grain of rice) onto a clean fingertip or a disposable spoolie. Gently sweep it along the length of your upper lashes from root to tip. Avoid globbing it on. A thin, even coat is all you need for the occlusive benefit.

Avoid direct contact with your eyes. Vaseline that migrates into the eye can cause temporary blurry vision. It will not harm your eye, but it is uncomfortable. Apply to the lashes themselves, not to the waterline or inner rim of the eyelid.

Use it at night. The best time to apply Vaseline to your lashes is before bed. Your lashes are not exposed to dust, wind, or makeup during sleep, so the jelly can sit undisturbed and do its conditioning work. In the morning, gently wash it off with warm water or your regular cleanser.

Keep it clean. Use a dedicated small container or single-use applicator rather than dipping your fingers into a large tub of Vaseline repeatedly. The skin around the eye is sensitive, and introducing bacteria from a communal jar increases the risk of irritation or infection.

What Oil Grows Eyelashes the Fastest?

This is one of the most searched questions in the lash care space, and the honest answer is: no oil has been clinically proven to grow eyelashes. Castor oil, coconut oil, and olive oil all have long histories as beauty remedies, but the scientific evidence for any of them stimulating lash growth is thin.

Castor oil has the most anecdotal support. Its key component, ricinoleic acid, has anti-inflammatory properties and may improve circulation to the skin around the follicle. A small number of studies suggest ricinoleic acid can support hair health, but none have demonstrated measurable lash growth in a controlled clinical setting. Still, many dermatologists consider it a reasonable conditioning option for lashes and brows. For a detailed head-to-head, see our castor oil vs. lash serum comparison.

Coconut oil penetrates the hair shaft more effectively than most oils due to its low molecular weight and lauric acid content. Research published in the Journal of Cosmetic Science found that coconut oil reduces protein loss from hair fibers, which makes it a strong conditioner. But like Vaseline, conditioning is not the same as growth. It helps your existing lashes stay intact longer.

Olive oil contains oleic acid and vitamin E, both of which moisturize and protect the lash cuticle. It is heavier than castor or coconut oil, which means it provides a stronger occlusive barrier but can also feel greasy and is more likely to blur your vision if it migrates.

All three oils work primarily as conditioners. They coat the hair, reduce brittleness, and prevent breakage, which can make lashes appear slightly longer over time simply because fewer lashes are snapping off prematurely. If you want actual follicle-level stimulation that produces measurably longer, thicker lashes, you need ingredients like peptides or prostaglandin analogues. Our guide on how long lash serums take to work covers what realistic timelines look like with active ingredients.

What Stimulates Eyelash Growth Naturally?

Beyond Vaseline and oils, people often ask about natural ways to support lash growth. The truth is that "natural" approaches primarily support lash health rather than producing dramatic growth. Still, they create the best possible foundation for your lashes to reach their full genetic potential.

Gentle handling. This is the single most impactful thing you can do. Aggressive makeup removal (rubbing, tugging, using harsh wipes) is one of the leading causes of lash loss and breakage. Use a gentle, oil-based makeup remover and let it dissolve mascara instead of scrubbing. Avoid waterproof mascara daily, as the removal process puts extra stress on lashes. If you use a lash curler, replace the rubber pad regularly and never curl after applying mascara.

Nutrition. Your lashes are made of keratin, a protein. A diet that supports keratin production helps your body build stronger lashes during the growth phase. Key nutrients include biotin (eggs, nuts, whole grains), omega-3 fatty acids (salmon, flaxseed), iron (leafy greens, red meat), and vitamins A and C. Biotin deficiency in particular can cause lash thinning, though true deficiency is uncommon in people eating a balanced diet.

Avoiding damage. Lash extensions, frequent lash lifts, and heavy false lashes all put mechanical stress on your natural lash follicles. Over time, this can lead to traction alopecia, where the repeated pulling actually damages the follicle and reduces its ability to produce new lashes. If you have been wearing extensions and notice your natural lashes are thinner than before, giving them a 3-6 month break is often the best first step. See our guide on how long eyelashes take to grow back for recovery timelines.

Managing underlying conditions. Thyroid disorders, hormonal changes, and certain medications can all affect lash growth. If you have noticed sudden or significant lash loss, consult a dermatologist before reaching for any cosmetic product. Treating the root cause will always be more effective than layering treatments on top of an undiagnosed condition.

These natural approaches will not produce the kind of visible length and density gains that a dedicated lash serum delivers. But they prevent damage, reduce breakage, and ensure your follicles are as healthy as possible. Think of them as the baseline: get these right first, then add a serum if you want more.

When to Consider a Dedicated Lash Serum Instead

Vaseline is fine for conditioning. But if any of the following describe your situation, it is worth upgrading to a dedicated lash serum:

• You want lashes that are actually longer. Vaseline will not make your lashes grow beyond their natural length. A peptide serum can extend the anagen growth phase, giving each lash more time to grow before it sheds.
• Your lash line looks sparse or thin. If the issue is density, not just dryness, you need ingredients that reduce premature shedding and increase the number of lashes in active growth at any given time. Conditioners do not address this.
• You have tried oils and Vaseline without meaningful change. If months of conditioning have not produced the results you want, that is a clear signal that conditioning alone is not enough for your goals. A serum with clinical-grade peptides works through a completely different mechanism.
• You are recovering from lash damage. After extensions, over-curling, or a period of stress-related lash loss, a peptide serum supports the regrowth process more actively than a conditioner can.

For prostaglandin-free options with strong safety profiles, see our prostaglandin-free lash serum guide. If you want to understand exactly what is in any formula before you buy, our ingredient checker tool breaks down product labels in plain language.

Frequently Asked Questions

Does Vaseline make lashes grow longer?

No. Vaseline does not stimulate lash growth. Petroleum jelly is an occlusive moisturizer that coats the lash shaft and locks in existing moisture, which can reduce breakage and make lashes appear healthier and slightly fuller. But it does not reach the hair follicle or trigger any biological growth response. For actual lengthening, you need active ingredients like peptides or prostaglandin analogues.

Can Vaseline damage your eyelashes?

Vaseline is generally safe for lashes when applied in a thin layer to clean skin. It is non-comedogenic and has been used around the eye area for over a century. The main risks are blurry vision if it migrates into the eye and potential irritation for people with very sensitive skin. Avoid applying thick layers, and always use clean hands or a clean spoolie to prevent introducing bacteria near the eye.

How long does it take to see results from Vaseline on lashes?

If you use Vaseline on your lashes nightly, you may notice softer, less brittle lashes within 2-4 weeks. This is a conditioning effect, not growth. Your lashes will look healthier and may break less, which can create the appearance of slightly more fullness over time. But you will not see the kind of measurable length or density gains that a peptide-based lash serum produces in 6-12 weeks.

Is castor oil better than Vaseline for eyelashes?

Both are conditioners, not growth treatments. Castor oil has slightly more anecdotal support due to its ricinoleic acid content, which has anti-inflammatory properties and may improve circulation at the follicle. But neither castor oil nor Vaseline has clinical evidence proving they stimulate lash growth. If conditioning is your goal, either works. If you want actual growth, a peptide-based lash serum is a more effective choice. See our full comparison for details.

Can you put Vaseline on eyelash extensions?

No. Vaseline and other petroleum-based products break down the adhesive used to bond lash extensions. This will cause your extensions to fall off prematurely. If you want to condition your natural lashes while wearing extensions, ask your lash technician to recommend an extension-safe serum or conditioning oil.