Eyelash lice are treated differently from head lice because standard lice shampoos can’t safely be used near your eyes. The main approaches are smothering the lice with a thick ointment applied to your lash line, having a doctor physically remove them, or in stubborn cases, taking an oral medication. Most infestations clear within one to two weeks with consistent treatment.
The lice that infest eyelashes are almost always pubic lice (also called crab lice), not the head lice most people are familiar with. They attach at the base of the lashes and lay tiny, translucent eggs (nits) that are only about half a millimeter long and glued firmly to individual lash hairs. Because of their small size and location, eyelash lice are frequently misdiagnosed as a common eyelid condition called blepharitis.
How to Recognize Eyelash Lice
Itching is the hallmark symptom. Your eyelids may also look red and swollen, and you might notice a gritty or burning sensation, watering eyes, or a whitish discharge. Small reddish-brown crusts along the lash line are common and come from the lice feeding on blood. You may also see tiny brown granules, which are fecal material from the parasites.
If you look closely in a well-lit mirror, adult lice appear as small, semi-transparent creatures clinging to the base of your lashes. Nits look like tiny oval structures stuck right where the lash emerges from the skin. An eye doctor using a magnifying slit lamp can confirm the diagnosis quickly.
Smothering With Petrolatum Ointment
The most accessible first-line treatment is applying a thick layer of petrolatum (petroleum jelly) to your eyelid margins. This works by physically suffocating the lice, cutting off their air supply without introducing any chemicals near your eyes. Apply it generously to your lash line twice daily, leaving it on for about two hours each time.
In published case reports, this approach killed all adult lice within three days. A few nits sometimes remained clinging to the lashes after the initial three-day period, but a follow-up exam one week later showed complete clearance. Plan to continue treatment for at least one to two weeks to catch any lice that hatch from surviving eggs during that window. Your doctor may also prescribe an antibiotic eye ointment (like erythromycin) to apply along the lash line, which serves double duty: it helps suffocate remaining nits and prevents bacterial infection of the irritated skin.
Why Standard Lice Treatments Don’t Work Here
The insecticide-based shampoos and rinses sold for head lice, most of which contain permethrin, are not safe for use around the eyes. Permethrin causes redness, pain, and burning on contact with the eyes and can damage the delicate tissue of the conjunctiva and cornea. This is the core challenge of eyelash lice: the treatments that work fastest on body hair simply can’t be applied to your lash line. That’s why suffocating agents and mechanical removal are the primary options.
In-Office Removal by a Doctor
An eye doctor can manually remove adult lice and nits using fine-tipped forceps under a slit-lamp microscope. This provides immediate relief and removes a large portion of the infestation in a single visit. However, manual removal alone rarely gets every last nit, since the eggs are firmly cemented to the lash shaft and easy to miss. Most doctors combine this approach with a topical smothering treatment at home to catch anything left behind. A follow-up visit about a week later confirms the infestation is fully cleared.
Prescription Options for Stubborn Cases
When petrolatum and manual removal aren’t enough, doctors have a few additional tools. Oral ivermectin, a prescription anti-parasitic medication, is effective for severe or recurring infestations. The typical approach is one dose per week for two consecutive weeks, which targets both adult lice and any that hatch between doses. In one reported case of a severe infestation, this two-dose regimen achieved near-complete eradication, with only a few remaining nits cleaned up by petrolatum afterward.
Another option is pilocarpine eye drops, a prescription medication normally used for glaucoma. Applied four times daily for about seven days, pilocarpine appears to paralyze and kill lice through its effect on their nervous system. In at least one documented case, a week of pilocarpine alone eliminated all lice and eggs without any additional treatment needed.
Treating the Rest of Your Body
Because eyelash lice are almost always crab lice, there’s a strong chance they’re present elsewhere on your body, particularly in the pubic area, underarms, or chest hair. Treating only the eyelashes while ignoring other sites will likely lead to reinfestation. For body hair, your doctor can prescribe a permethrin-based wash that’s safe for use on skin below the eyes. Treating all affected areas simultaneously gives you the best chance of clearing the infestation completely.
Sexual partners and close household contacts should be examined and treated at the same time, even if they don’t have symptoms yet. Since crab lice spread through close physical contact, untreated partners are a common source of reinfestation.
Cleaning Your Home During Treatment
Lice and their eggs can survive briefly on fabrics, so you’ll need to decontaminate anything that has touched your face or body in the two to three days before starting treatment. Wash all bedding, towels, and clothing in hot, soapy water at a minimum of 130°F (54°C), then run them through the dryer on the highest heat setting for at least 20 minutes. For items that can’t be washed, either have them dry-cleaned or seal them in an airtight plastic bag for two weeks. Lice can’t survive that long without a human host.
Managing Irritation After Treatment
Even after the lice are gone, your eyelids may remain red, swollen, and itchy for a while. This is partly from the bites themselves (lice leave small bleeding spots in the skin each time they feed) and partly from weeks of rubbing irritated eyes. The most important thing you can do during recovery is stop touching and rubbing your eyelids, even when they itch. Continued rubbing can cause contact dermatitis that outlasts the infestation by weeks.
If significant inflammation persists after the lice are cleared, your doctor may prescribe a short course of mild steroid cream or drops to calm the eyelid tissue. For cases where bacteria have colonized the irritated lash line, an antibiotic ointment applied for two to eight weeks can resolve the secondary infection and help your eyelids return to normal.