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One Long Eyelash? Why Lashes Grow Odd (Australian Guide)
You notice it in the bathroom mirror, usually on an ordinary Tuesday. One eyelash, longer than all its neighbours, curling off on its own like a lone flag. You lean closer. You consider tweezers. You open your phone and type the question that brings a surprising number of Australians to the internet: what does one long eyelash mean?
The short answer is: usually nothing at all. Lashes are small, individual hairs, each on its own schedule, and a bit of oddness is part of the design. But a few lash changes are worth knowing about, so this guide sorts the harmless from the worth-checking, and tells you who to see in Australia when it is the second kind.
First, how lashes actually grow
The upper lid carries roughly 90 to 160 lashes and the lower lid about 75 to 80, according to a StatPearls anatomy review. Each lash follows its own cycle: a growth phase of about 4 to 10 weeks, a brief transition of around 15 days, and a resting phase of 4 to 9 months before it sheds. The whole cycle runs about 4 to 11 months, and at any moment around half of your lashes are in the growth phase. Lashes grow roughly 0.12 to 0.14 mm a day and typically stop at about 12 mm.
That one fact explains most of the mystery. Because every lash is on its own timetable, some are at full length while their neighbours are resting or have just shed. Our guide to how long eyelashes take to grow back walks through the cycle in more detail.
One long eyelash: what does it mean?
A single longer lash is usually a lash that has simply had a good run in its growth phase while the ones beside it were resting or are newly regrown. It is common, it is cosmetic, and it is not a sign of anything. You can trim the tip carefully with small, clean scissors, or leave it be. Many people prefer not to pluck, because a plucked lash has to grow all the way back.
A lone pale or white lash is also something people notice. It is usually harmless, but if a lash changes colour suddenly, or you notice several changing together, mention it at your next eye or skin check.
Why are my eyelashes suddenly so long?
If all your lashes have grown longer, thicker or curlier, and it happened over weeks or months, it is worth a closer look. The medical term is eyelash trichomegaly, an increase in length above 12 mm along with thickness, curl or darkness. Some people are simply born with long lashes, and it can run in families.
Acquired causes are well documented. Glaucoma eye drops containing latanoprost, bimatoprost or travoprost are the most commonly reported, along with some other medicines, and certain medical conditions have been linked to it as well. If your lashes changed after starting a new medication or eye drop, talk to your doctor before stopping anything. And if it came with fatigue, weight loss, rashes or eye redness, see your GP or an optometrist rather than waiting.
Eyelashes growing above the lash line, or a second row
A normal lash line is a single row. A second row of lashes, called distichiasis, is uncommon, affecting an estimated 1 in 10,000 people according to Cleveland Clinic. The extra lashes tend to be shorter or thinner and grow from the oil glands in the lid. Some people have it from birth, and some develop it after inflammation or injury of the lids.
Many people with it have no symptoms and need no treatment. But if the extra lashes rub the eye, you can get redness, watering, light sensitivity, styes or a gritty feeling. That is a reason to see an optometrist or eye doctor. Treatment options include lubricating drops, special contact lenses, and removal methods such as laser, cryotherapy or electrolysis. Plucking only helps for about two to three weeks.
If you simply notice a few lashes sitting a little above the others and your eyes feel fine, it is likely just a quirk of your lid, but a quick optometrist check puts the question to rest.
Lashes growing sideways, down or in different directions
Lashes grow from individual follicles, and a few pointing the wrong way is common. They also lack the tiny muscles that make other hairs stand up, so they do not shift with cold or emotion. The one thing to act on is a lash that turns inward and touches the eye. Ingrown or inward-turning lashes can irritate the surface of the eye and raise the risk of infection, so see an eye professional promptly if you feel one rubbing.
If one side simply sits flatter or looks different from the other, our guide to why eyelashes can grow unevenly covers the everyday habits that make one side look different.
My eyelashes are shorter or not growing
Lashes that look shorter than they used to usually reflect where they are in the cycle, breakage, harsh removal, or rubbing. Cosmetic extensions and heavy mascara can add to it. Hormonal shifts, thyroid problems and nutritional deficiencies are also linked with thinning, so if you are losing lashes in one spot or on both eyes and it keeps going, mention it to your GP.
Crying, Vaseline and other lash myths
Does crying make your eyelashes longer? Dermatologists quoted by NewBeauty call it a myth. Tears can make lashes look darker and glossier, and wet lashes can look longer, but there is no growth benefit. Lash length, colour and density are influenced by hormones and genetics. We could not find reliable evidence for Vaseline making lashes grow either, and it should be kept well away from the eye itself.
Buying a lash product in Australia: what to know first
If you are tempted to try something for longer-looking lashes, a few Australian facts help. CHOICE reports that the Therapeutic Goods Administration says bimatoprost (the active in Latisse) is available only on prescription for people with hypotrichosis, and that overseas sites sell versions without a script. The TGA says it cannot give assurance about the quality, safety or effectiveness of unapproved medicines. CHOICE also notes that RevitaLash Advanced, sold over the counter here, contains a synthetic prostaglandin, and that the FDA and Swedish regulator have warned about those ingredients.
Peptide and conditioning serums are considered lower risk, though evidence that they grow lashes is limited. Our guide to lash serums for sensitive eyes explains what to look for on a label, and your GP or optometrist is the right first call if you are unsure.
Where Eastern Curlew fits
We are an Australian business, and we sell LashViva, our own-label peptide eyelash serum. Its product page lists it as prostaglandin-free and formulated with Biotinoyl Tripeptide-1, Myristoyl Pentapeptide-17, ginseng and hyaluronic acid. It is a cosmetic product aimed at the look of lashes. It will not change a lash that is already long, fix a second row, or treat any eye condition, and it is worth patch testing first. If you are unsure what is going on with your lashes, ask an optometrist first.
Around Australia
- Sydney, Melbourne, Brisbane, Perth and Adelaide: an optometrist is often the quickest place to have an unusual lash checked, and many have same-week appointments.
- Regional and rural towns: your GP can examine the lid and refer you to an eye specialist if needed.
- Hot, windy or dusty areas such as inland Queensland, WA and the NT: grit and dry air can irritate the lids, so cleanse gently and avoid rubbing.
- Cooler climates such as Hobart, Canberra and Melbourne winters: dry indoor heating can leave lids flaky; moisturise around, not in, the eye.
When to see an optometrist or GP
- A lash that touches or rubs the eye.
- Redness, pain, light sensitivity or watering that persists.
- Lashes that suddenly lengthen after a new medicine or eye drop.
- Lash changes that come with fatigue, weight loss or rashes.
Frequently asked questions
What does one long eyelash mean?
Usually just a lash that has had a long growth phase while its neighbours rested. It is common and cosmetic.
Should I cut or pluck one long eyelash?
Trimming the tip carefully with clean, small scissors is fine. Plucking means it has to regrow from scratch.
Why are my eyelashes suddenly longer?
Genetics can play a part, and some medicines and medical conditions are linked with eyelash trichomegaly. See your doctor if it happened quickly or alongside other symptoms.
Is it normal to have a second row of eyelashes?
It is uncommon, around 1 in 10,000 people, and many need no treatment. See an eye professional if the extra lashes irritate your eye.
Why are my eyelashes growing above my lash line?
It can be a harmless quirk or distichiasis. If your eyes feel fine it is usually benign, but a check with an optometrist confirms it.
Why do my eyelashes grow in different directions?
Each lash grows from its own follicle, so slight variation is normal. A lash turning inward and touching the eye needs attention.
How many eyelashes should I have?
Roughly 90 to 160 on the upper lid and 75 to 80 on the lower lid, though it varies.
Does crying make eyelashes longer?
No. Dermatologists call it a myth. Tears can make lashes look darker and glossier, not longer.
Is bimatoprost lash serum legal in Australia?
CHOICE reports that the TGA says it is available only by prescription for hypotrichosis, and that overseas sellers may offer versions without a script.
Who do I see in Australia about a problem lash?
An optometrist or your GP. Go promptly if a lash touches the eye or you have pain, redness or vision changes.
Sources
StatPearls, Anatomy, Head and Neck: Eyelash (National Library of Medicine); Cleveland Clinic, Distichiasis (double eyelashes); Donovan Medical, Eyelash trichomegaly; NewBeauty, Does crying make your eyelashes longer?; CHOICE, Eyelash serums; Eastern Curlew LashViva product page. General information, not medical advice.