Poliosis of the eyelashes is a localized loss of pigment that turns a patch of lashes stark white, sometimes on one lid, sometimes both. The underlying problem is a shortage or complete absence of melanin-producing cells in the hair follicles of the affected lashes.1PubMed. Poliosis circumscripta: overview and underlying causes It can be an isolated cosmetic finding or the first visible sign of a broader condition ranging from vitiligo to a rare genetic syndrome. Because the causes vary so widely, a streak of white eyelashes always deserves a closer look at what is driving it.
What Poliosis Actually Looks Like
The word “poliosis” comes from the Greek for gray, but the reality is usually a bright, paper-white cluster of lashes rather than a gradual graying. Unlike the slow salt-and-pepper transition that happens with ordinary aging, poliosis tends to appear in a sharply defined patch. You might notice a dozen bright-white lashes sitting next to completely normal, dark ones on the same lid. Both the upper and lower lashes can be involved, and poliosis can show up on one eye or both, depending on the cause. The lash texture usually stays the same; it is only the color that changes.
The condition is distinct from the diffuse lightening that happens as people get older. That slow graying is widespread and symmetrical. Poliosis, by contrast, is patchy and circumscribed, which is why the clinical name is “poliosis circumscripta.” It can affect any hairy area of the body, including the scalp (the classic “white forelock”), eyebrows, and eyelashes.1PubMed. Poliosis circumscripta: overview and underlying causes When it hits the eyelashes alone, it often catches people off guard because the patch is small yet highly visible against darker surrounding lashes.
The Mechanism Behind the White Lashes
Every hair gets its color from pigment-producing cells called melanocytes that sit in the hair bulb. In poliosis, those melanocytes are either reduced in number or gone entirely, or they are present but have stopped making melanin. Microscopically, the affected follicles show decreased or absent melanin and melanocytes in the hair bulbs.1PubMed. Poliosis circumscripta: overview and underlying causes Without pigment, the hair shaft grows in white. This can happen through several routes: the immune system can destroy melanocytes, a genetic mutation can prevent them from developing in the first place, or local inflammation or trauma can damage the cells so they stop functioning. The final appearance is the same regardless of the route, which is why identifying the cause requires looking beyond the white lashes themselves.
Genetic and Congenital Causes
Some people are born with white eyelashes, or they appear very early in childhood. These cases usually point to one of several inherited conditions.
Piebaldism is a rare autosomal dominant condition caused by mutations in the KIT gene, which is essential for melanocyte development. Its hallmarks include a white forelock and patches of depigmented skin, and eyelash poliosis can be part of the picture.2PubMed Central. A novel splicing mutation of KIT results in piebaldism and auburn hair color in a Chinese family Because the mutation disrupts melanocyte migration during fetal development, the white patches are present from birth and tend to be stable over a person’s lifetime.
Waardenburg syndrome is another genetic condition frequently associated with poliosis. It involves mutations in genes that regulate melanocyte development and distribution, and can come with other features like widely spaced eyes, hearing loss, and iris color differences. Tuberous sclerosis, though better known for skin bumps and neurological symptoms, can also produce localized white hair patches including on the lashes.1PubMed. Poliosis circumscripta: overview and underlying causes In children, a list of rarer genetic syndromes can also present with eyelash poliosis, including Marfan syndrome, neurofibromatosis type 1, and Tietze syndrome, among others.3European Journal of Pediatric Dermatology. Acquired unilateral eyelash poliosis in a child
When poliosis appears in a baby or young child, clinicians generally look for these syndromes through a combination of genetic counseling, eye exams, and hearing tests. The white lashes alone are not dangerous, but they can be a signpost that points toward a syndrome that needs monitoring.
Autoimmune and Inflammatory Causes
Vitiligo is the most common acquired cause of eyelash poliosis. The immune system targets melanocytes, destroying them in patches, and when the patches hit the eyelids, the overlying lashes lose their color. In segmental vitiligo, which tends to affect just one side of the body, unilateral eyelash poliosis may be the most visible sign, especially in children.3European Journal of Pediatric Dermatology. Acquired unilateral eyelash poliosis in a child The white lashes sometimes appear before any skin depigmentation is obvious, which can make vitiligo easy to miss if nobody looks at the eyelid skin carefully.
Vogt-Koyanagi-Harada (VKH) disease is a less common but more serious autoimmune condition where the immune system attacks melanocytes throughout the body, affecting the eyes, skin, inner ear, and central nervous system. People with VKH can develop eyelash and eyebrow poliosis alongside uveitis (inflammation inside the eye), hearing changes, and whitening of the scalp hair. Because VKH threatens vision, white eyelashes that appear alongside eye pain, blurred vision, or light sensitivity should prompt an urgent ophthalmology evaluation.
Alopecia areata, the autoimmune condition that causes round bald patches on the scalp, can also selectively spare white hairs while destroying pigmented ones. When it involves the eyelashes, the remaining or regrowing lashes may come back white, creating a poliosis-like appearance. In some cases, poliosis is the first or only sign of alopecia areata affecting the lid.
Medications That Can Cause It
One of the more surprising triggers for eyelash poliosis is the very class of eye drops used to treat glaucoma. Prostaglandin analog drops, including latanoprost, bimatoprost, and travoprost, are well known for causing eyelash growth and darkening, but in some patients they paradoxically cause the opposite effect. A study of patients on these drops found that seven developed bilateral eyelash poliosis, either on its own or alongside other side effects of the medication.4PubMed. Topical prostaglandin F(2alpha) analog induced poliosis
The mechanism is not fully understood, but prostaglandin analogs interact with receptors in the hair follicle that influence the hair growth cycle, potentially stimulating resting follicles into their growth phase.5PubMed Central. Bimatoprost in the treatment of eyelash hypotrichosis In most people this leads to longer, thicker, darker lashes. In a minority, something goes wrong with the melanocyte activity during this accelerated growth, and the new lashes grow in white. The effect is generally reversible if the drops are stopped, though it may take several growth cycles for the pigmented lashes to return fully. If you are using glaucoma drops and notice your lashes whitening, it is worth mentioning to your ophthalmologist, though the poliosis itself does not harm the eye.
Age-Related Eyelash Poliosis
Not every case of white eyelashes signals a disease or a medication side effect. A large population-based study of adults over 60 found that eyelash poliosis affected about 3% of participants overall, rising from roughly 1.8% in those aged 60 to 64 up to about 8.5% in people aged 80 and older.6BMC Ophthalmology. Epidemiology of eyelid disorders in an elderly population: Tehran Geriatric Eye Study The condition was more common in women in that study. This age-related form is essentially the same process that turns scalp hair gray: melanocyte stem cells in the hair follicle gradually deplete over decades, and the lash follicles eventually lose the ability to produce pigment.
For older adults, isolated eyelash poliosis with no other symptoms is almost always benign. The clinical significance lies in distinguishing it from poliosis driven by an underlying autoimmune or inflammatory process. If the white lashes appeared suddenly in mid-life rather than creeping in slowly after 60, that timeline raises a different set of questions.
Poliosis in Children
When a child develops white eyelashes, the list of possible causes narrows but also becomes more clinically important. Segmental vitiligo is the most frequent cause of acquired unilateral eyelash poliosis in children.3European Journal of Pediatric Dermatology. Acquired unilateral eyelash poliosis in a child If the white lashes have been present since birth, clinicians consider the genetic syndromes discussed earlier. Genetic counseling and an ophthalmologic exam can help rule out conditions like Waardenburg syndrome or tuberous sclerosis, which have implications well beyond the cosmetic.
Parents sometimes notice the white lashes before any other sign of disease becomes apparent. In the pediatric age group, the eyelash change is essentially a flag that invites a broader workup. A child with poliosis and no other findings may simply have an isolated developmental quirk, but confirming that requires excluding the more significant diagnoses first.
When to See a Doctor
Poliosis of the eyelashes is not an emergency, but certain patterns warrant medical attention. A sudden onset, especially in an adult under 60, suggests something other than normal aging. Unilateral poliosis appearing alongside patches of skin depigmentation points toward vitiligo. White lashes combined with eye redness, pain, blurred vision, or light sensitivity raise the possibility of VKH disease and need prompt evaluation. Bilateral poliosis in someone using prostaglandin analog eye drops is a recognized side effect and should be discussed with the prescribing eye doctor, though the drops usually should not be stopped without professional guidance since they protect against glaucoma-related vision loss.
In general, the clinical workup for new eyelash poliosis involves a careful skin examination under a Wood’s lamp (an ultraviolet light that makes depigmented patches more visible), a detailed history of medications and family history of pigment disorders, an eye exam, and sometimes blood work or genetic testing depending on the clinical picture. The white lashes themselves do not need treatment unless the person wants them to look different cosmetically.
Medical Treatments That Can Restore Pigment
Treating the underlying cause, when there is one, sometimes brings the lash color back. In vitiligo-associated eyelash poliosis, therapies that calm the autoimmune attack on melanocytes have shown promise. One case report described a patient with vitiligo affecting both upper eyelids, with about 10% of the right and 70% of the left upper eyelashes depigmented. After two months on a topical JAK inhibitor (tofacitinib), partial repigmentation of both the eyelid skin and lashes was visible. By five months, the lashes showed near-complete return of color.7PubMed Central. Repigmentation of vitiligo-associated eyelash leukotrichia with topical tofacitinib JAK inhibitors are still being studied for this use and are not a standard treatment, but the result illustrates that melanocytes can sometimes be coaxed back into function if the autoimmune environment changes.
Phototherapy, the ultraviolet-light treatment used for widespread vitiligo, has been tried for eyelash poliosis, but results are inconsistent, partly because delivering UV light safely to the eyelid area is tricky.8JAAD Case Reports. Poliosis as a result of temporary eyelash tinting For poliosis caused by genetic conditions like piebaldism, where the melanocytes never developed in the first place, medical treatments aimed at repigmentation generally do not work.
Eyelash Transplantation
When medical therapies fail or are not applicable, surgical approaches offer another route. Eyelash transplantation involves harvesting individual follicular units from the scalp (where the hair is naturally pigmented) and implanting them along the lash line. The technique has been described as safe and effective for eyelash poliosis associated with vitiligo.9PubMed Central. Eyelash Transplantation for the Treatment of Vitiligo Associated Eyelash Leucotrichia In a systematic review looking at follicular unit extraction and transplantation for depigmented eyebrow and eyelash hair, two case studies reported excellent pigmentation results, with 98% to 100% repigmentation, and even some return of color to adjacent vitiligo patches on the skin.10PubMed Central. Treatment of Vitiligo Associated Eyebrow and Eyelash Leukotrichia – A Systematic Review of Existing Information
There are practical considerations, though. Transplanted scalp hairs grow longer and faster than natural eyelashes, so people who get the procedure typically need to trim their lashes regularly. The transplanted hairs also grow in the direction and curl pattern of scalp hair, not lash hair, which can feel and look slightly different. And because the underlying autoimmune process may still be active in vitiligo patients, there is always a possibility that the transplanted follicles could lose their melanocytes over time, though this seems to be uncommon in reported cases.
Cosmetic Camouflage and Its Risks
Many people with eyelash poliosis are not looking for medical intervention. They just want the white lashes to blend in. Eyelash tinting, where a semi-permanent dye is applied to the lashes in a salon or at home, is the most common cosmetic approach. Mascara serves the same purpose on a day-to-day basis. Both can effectively disguise white lashes and are the go-to option for people whose poliosis is stable, benign, and not tied to an active disease process.
Tinting does carry some risk, however. The skin around the eyes is thinner and more sensitive than the rest of the face, and allergic reactions to lash dyes are not rare. One study found that 60% of people who underwent eyelash dyeing experienced allergic contact dermatitis as the most common adverse effect.11PubMed Central. Eyelid Cosmetic Enhancements and Their Associated Ocular Adverse Effects That is a strikingly high rate. Patch testing before applying a new dye near the eyes is a sensible precaution, especially for anyone with a history of skin sensitivity. Some regulatory bodies have cautioned against certain dye formulations for use near the eyes, and formulations marketed specifically for lash use tend to be gentler than general hair dyes, though even these can provoke reactions in sensitive individuals.
False eyelashes and eyelash extensions offer a dye-free alternative. They can be matched to the person’s natural lash color and applied to cover or blend with the white lashes. Extensions require regular maintenance and carry their own risks, including traction on existing lashes and occasional allergic reactions to the adhesive, but they avoid the chemical exposure of dye.
Can Poliosis Spread or Reverse on Its Own
Whether eyelash poliosis stays put, spreads, or reverses depends entirely on its cause. In genetic conditions like piebaldism, the white patches are generally stable from birth and do not expand or shrink. In vitiligo, the condition can be progressive, and poliosis on the lashes may be followed by new depigmented patches on nearby skin or hair. In some vitiligo patients, spontaneous repigmentation does happen, though it is uncommon and unpredictable.
Drug-induced poliosis from prostaglandin analog eye drops tends to reverse within months of stopping the medication, as new lash growth cycles produce pigmented hairs once the drug is cleared. Age-related poliosis is progressive by nature; the melanocyte stem cells do not regenerate, so the white lashes are permanent and the number of affected lashes typically grows over time.
For anyone trying to decide whether to pursue treatment, these trajectories matter. Treating vitiligo-driven poliosis aggressively early may preserve more melanocytes and produce a better cosmetic outcome. Treating age-related poliosis medically is futile because there is no active disease process to address. And treating piebaldism-related poliosis medically is also unlikely to help, since the melanocytes were never there to begin with. Matching the treatment strategy to the underlying cause is the whole game.
Poliosis Caused by Eyelash Tinting Itself
In an ironic twist, the very cosmetic procedure people use to hide eyelash poliosis can sometimes cause it. Reports have documented cases where temporary eyelash tinting triggered a localized inflammatory reaction that damaged melanocytes in the lash follicles, resulting in new poliosis.8JAAD Case Reports. Poliosis as a result of temporary eyelash tinting This is uncommon, but it highlights how sensitive the melanocytes in eyelash follicles can be to chemical insult. The inflammation from an allergic or irritant reaction to the dye damages the very cells responsible for lash color. For someone whose poliosis is already a concern, an adverse reaction to tinting could make things worse rather than better, which is another argument for patch testing and choosing gentler formulations.