Does Vaseline Grow Your Lashes? What Research Says

No, Vaseline does not grow your lashes. There is no clinical evidence that petroleum jelly makes eyelashes longer, thicker, or denser. It can make existing lashes look slightly darker and glossier, and it may reduce breakage by coating the hair shaft — but it cannot change how fast hair grows or how many hairs you have.

The idea spread through beauty blogs and social media, not through dermatology research. What we know about hair growth biology explains clearly why the claim does not hold up.

Does Vaseline Grow Your Lashes? What Research Says

No study has shown that petroleum jelly stimulates eyelash growth. Not one controlled trial has found a link between topical Vaseline and increased lash length, thickness, or follicle count.

The claim likely comes from a simple observation. Coating lashes with a clear, shiny gel makes them look darker and more defined. That visual change gets mistaken for growth. It is a cosmetic effect, not a biological one.

To understand why, it helps to know what Vaseline actually is. It is a mixture of mineral oils and waxes refined into a semi-solid jelly. It is occlusive, meaning it forms a barrier on the skin that slows water loss. That is why it works well on dry lips and minor scrapes.

An occlusive barrier does not penetrate the hair follicle. It sits on the surface. The cells that build a lash are inside the follicle, below the skin. Vaseline never reaches them in any meaningful way.

How Eyelashes Actually Grow

Eyelash growth follows the same hair growth cycle as the rest of your body hair. Each lash passes through three phases.

• Anagen (growth phase): The hair actively grows. For eyelashes, this phase is short — roughly one to two months.
• Catagen (transition phase): Growth stops and the follicle begins to shrink. This lasts a couple of weeks.
• Telogen (resting phase): The lash rests, then sheds. A new lash starts growing in its place.

Because the growth phase is brief, eyelashes stay short by design. The full cycle typically runs a few months, and at any given time your lashes are at different points in that cycle.

What controls the speed and length of growth is largely genetic and hormonal. Nutrition matters too — severe protein or iron deficiency can affect hair. But for most healthy adults, lash length is set by biology you cannot change with a topical balm.

This is the key point the Vaseline claim ignores. To grow a longer lash, you would need to extend the growth phase or keep the follicle producing hair longer. Petroleum jelly does neither. It has no known mechanism to influence the hair cycle at all.

Why Vaseline Can Make Lashes Look Longer

Vaseline can create a temporary illusion of fuller lashes. This is real, and it is worth understanding because it explains where the myth comes from.

When you coat lashes with petroleum jelly, the jelly fills in the spaces between individual hairs and adds a slight sheen. The lashes clump together and catch light differently, which makes them appear darker and thicker. Mascara works on a similar principle, just with pigment added.

There is also a possible minor benefit: coating the lash shaft can reduce friction and make lashes less likely to break or snag. Less breakage means you keep the lashes you have. That is not the same as growing new ones, and no study has confirmed Vaseline does this on eyelashes specifically.

Here is the non-obvious part. Anything that makes lashes look better in the short term can easily be mistaken for growth over weeks, because eyelashes naturally shed and regrow on their own schedule. If your lashes look slightly fuller after a month of Vaseline, you are almost certainly seeing normal cycle turnover plus a cosmetic coating effect — not stimulation.

Is Putting Vaseline on Your Lashes Safe?

For most people, petroleum jelly is well tolerated on the skin. The eyes are a different matter, and caution is reasonable here.

The skin around the eye is the thinnest on the body. The eyelid margins and the openings of the oil glands along the lash line are delicate. Applying a thick occlusive jelly right at the lash root can clog those gland openings. Clogged eyelid glands are associated with irritation and with a common inflammatory eyelid condition called blepharitis.

There is also a practical risk. Vaseline near the eye can migrate onto the surface of the eye, blur vision, and trap debris or bacteria. If you wear contact lenses, this is a genuine concern.

Some clinicians advise against putting petroleum-based products directly on the lash line for these reasons. Others see occasional light use as low risk. The evidence on eyelid safety for this specific use is limited, so treat it as a product to keep away from the lash root rather than something to slather on nightly.

Anyone with a history of styes, blepharitis, dry eye, or sensitive skin should be especially cautious. And never share a tub of Vaseline or dip fingers into it repeatedly near the eye — that is a straightforward route for bacteria.

What Actually Supports Eyelash Growth

If longer lashes are the goal, it helps to separate what has evidence behind it from what does not.

Prescription treatments. A prescription eyelash serum containing a prostaglandin analog is the only category with regulatory approval for increasing eyelash length, thickness, and darkness. Clinical trials supported its approval. It requires a prescription and carries real side effects, including iris color changes, eyelid skin darkening, and eye irritation. It is not a casual cosmetic purchase, and a doctor should guide its use.

Over-the-counter lash serums. Most contain peptides, biotin, or plant extracts. The evidence for these ingredients increasing lash growth is weak. Some small studies suggest certain peptides may support the appearance of lash thickness, but results vary and large trials are lacking. Be skeptical of bold claims.

Mascara and cosmetic tricks. These deliver an immediate look without claiming to change biology. Curling lashes and using lengthening mascara remain the most reliable short-term options.

General hair health. Adequate protein, iron, and overall nutrition support normal hair growth. Extreme dieting or untreated deficiencies can cause shedding. Fixing a deficiency may restore normal growth, but supplements do not make lashes grow beyond your genetic baseline.

Do Home Remedies Like Castor Oil or Vaseline Work Better?

Castor oil is the most common alternative people try, and the evidence for it is also thin. It is rich in a fatty acid called ricinoleic acid, and it is a good moisturizer. Some people find it makes lashes look conditioned and less brittle.

But no well-controlled human trial has shown castor oil increases eyelash length or density. The same surface-coating logic applies. Like Vaseline, castor oil can make lashes look glossier and may reduce breakage, but it does not act on the follicle to extend growth.

There is one more caution with castor oil. It can cause allergic reactions in some people, and a small number of case reports have described eyelash or eyebrow hair loss associated with its use. That is not common, but it means “natural” does not automatically mean risk-free near the eye.

Neither Vaseline nor castor oil has been shown to outperform the other, because neither has been shown to grow lashes in the first place. Choosing between them is a matter of texture and tolerance, not efficacy.

The Bottom Line on Vaseline for Lashes

Vaseline is a decent moisturizer with a long safety record on skin. It is not a lash growth treatment. The claim that it grows lashes is marketing and internet folklore, not science.

If you like how it makes your lashes look, keep it away from the lash root and out of the eye itself. If you want genuinely longer lashes, the only option with strong evidence is a prescription product — and that decision belongs with a doctor who can weigh the side effects.

Be wary of any product promising dramatic lash growth without a prescription. If a claim sounds too good for a tub of petroleum jelly, it usually is.