It’s April in Winnipeg, and the texts have started. *My lashes are falling out faster than usual. Did something change? Is the glue different?* The answer is no — nothing changed with the adhesive, the technique, or the aftercare. What changed is the amount of sunlight hitting your face when you walk to your car at 7 PM, and the chain reaction that triggers inside every hair follicle on your body.
Spring lash shedding is one of the most misunderstood experiences in the extensions world. Clients assume something went wrong. Technicians field anxious DMs. But the real story is more interesting than a retention problem — it’s a story about how your body tells time.
The Hormone Behind the Fallout
Melatonin is famous for making you sleepy. Less famous: it also keeps your hair growing. Research published in the Journal of Pineal Research found that melatonin plays a direct role in the hair growth cycle, helping follicles stay in the anagen phase — the active stage where lashes are anchored, growing, and holding extensions well.
Here’s where it gets interesting. Your body produces melatonin in response to darkness. Long winter nights mean more melatonin. Short spring evenings mean less. As daylight hours increase through March and April, your melatonin production drops — and with it, the hormonal signal that was keeping a percentage of your follicles in their growth phase.
Without that signal, more follicles shift into telogen — the resting phase where the hair loosens and eventually sheds. But the timing is staggered. The daylight change happens in March. The shedding shows up in April and May, roughly two to three months later. By the time you notice extra lashes on your pillowcase, the biological trigger happened weeks ago.
What the Numbers Actually Say
This isn’t anecdote. A study of 823 women published in Dermatology documented clear annual periodicity in hair shedding, with a distinct spring peak in the proportion of telogen hairs. The pattern was consistent and measurable across the study population.
On a normal day, you shed one to five natural lashes per eye. During seasonal shedding, total hair loss across your body can jump to 200 hairs daily — double the usual 50 to 100. And because each natural lash takes an extension with it when it goes, what feels like a retention disaster is actually your body running its seasonal program right on schedule.
Roughly 80% of lash extension wearers notice increased fallout in spring. If you’re reading this in April and wondering why your fills aren’t lasting like they did in January, you’re in very large company.
Why Winnipeg Gets Hit Harder
Not all cities experience this equally, and geography is the reason. The melatonin-driven shedding cycle is tied to photoperiod — how dramatically your daylight hours change across seasons. And Winnipeg sits at a latitude that makes those swings enormous.
At the winter solstice, Winnipeg gets 8 hours and 9 minutes of daylight. By the summer solstice, that stretches to 16 hours and 25 minutes. That’s over eight hours of difference — one of the most dramatic photoperiod shifts in Canada. Compare that to Toronto, which swings about six and a half hours, or Vancouver at just over eight but with far more cloud cover dampening the UV signal.
For Prairie residents, the biological pendulum swings wider. More dramatic daylight change means a sharper drop in melatonin production, which means more follicles entering telogen at once, which means more noticeable spring shedding. It’s the same biology everywhere, but the amplitude is turned up here.
This is also why the pattern reverses in fall. As daylight shortens dramatically through September and October, melatonin surges back, follicles re-enter anagen, and by late autumn your retention numbers quietly climb again. Clients who’ve been getting lash extensions for a few years often notice this cycle without knowing why.
The Growth Cycle, Briefly
Every natural lash cycles through three phases: anagen (active growth, lasting 30 to 45 days), catagen (a brief transition period of 10 to 20 days), and telogen (the resting phase, which can stretch up to 100 days before the lash finally releases). At any given moment, your lashes are in different stages — which is why you lose a few per eye daily rather than all at once.
Spring shedding doesn’t change the cycle itself. It changes how many follicles enter telogen simultaneously. Think of it like a traffic jam: normally, lashes cycle out in a steady trickle. During seasonal shedding, a larger wave enters telogen together, and the fallout concentrates into a few noticeable weeks.
At LaviLash, we see this pattern repeat every year like clockwork. The volume of fill appointments bumps up in April, and by the time clients are deep into Winnipeg’s wedding season, retention stabilizes again.
What This Means for Your Fill Schedule
The practical part: if you normally book lash fills every three weeks, spring is the season to tighten that to every two. Not because your tech did anything differently, but because the math changed. More natural lashes shedding means more extensions leaving with them, and a two-week interval keeps your set looking full through the transition.
A few other things that genuinely help during shedding season:
- Clean your lashes daily. A gentle foaming cleanser removes the oil and debris that can weaken bonds — and healthy follicles shed more cleanly when the lash line isn’t congested. If you need a refresher on technique, our [aftercare guide](/blog/lash-extension-aftercare-guide) walks through it step by step.
- Resist the urge to rub. When lashes feel loose, the instinct is to touch them. Every touch applies lateral force to bonds that are already under stress from the shedding cycle.
- Consider a lighter set. If you normally wear mega volume, spring might be the season to drop to a volume or hybrid set. Less weight per natural lash means less strain during a period when follicles are already transitioning. Your artist can map a style that still looks full with a lighter load — it’s the kind of precision that separates a [great lash appointment](/book) from a generic one.
None of these tips will stop the shedding. Nothing will — it’s not a problem to solve. But they protect your investment and keep your set looking its best while your body does what bodies do.
The Bigger Picture
There’s something oddly reassuring about spring lash shedding once you understand it. It means your biology is working. Your body is responding to light the way it has for thousands of years, cycling through growth and rest in a rhythm tied to the planet’s tilt. The same mechanism that makes flowers bloom and birds migrate is quietly turning over your lash follicles.
A 2025 review in hair biology research even found that melatonin can promote follicular stem cell activity — suggesting the hormone isn’t just a sleep aid but a fundamental regulator of how your body grows and renews. The same seasonal clock that causes spring shedding is what makes your lashes come back strong by summer.
So the next time you find an extension on your cheek in April and feel that flicker of worry — remember it’s not the glue. It’s not your aftercare. It’s not your lash artist. It’s Winnipeg tilting toward the sun, and your body keeping perfect time.
If the shedding has you rethinking your spring schedule, book a fill and mention you’re noticing extra fallout — your artist can adjust your mapping and timing to work with the season, not against it.
