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You've got the lashes. They're the right style for your eye shape, or at least you hope they are. Now they need to actually go on your face and stay there.
Magnetic lashes are marketed as foolproof. They're not. The magnets help, but technique still matters. Most of the frustration people experience comes from a handful of fixable mistakes.
The Bend Protocol
Magnetic lash bands come out of the packaging with a factory-set curve. That curve is almost never the same as your eye's curve. If you apply the band as-is, it fights your lid. The magnets grip in the middle while the edges lift away, and within an hour the corners are peeling off.
Before applying, wrap the band around a brush handle or a finger and hold it there for ten to fifteen seconds. You're breaking the stiffness and training the band to sit in a tighter curve. A softened band conforms to your lid. A stiff one fights it.
Do this every time, even with lashes you've worn before. The band remembers its shape between wears.
Liner Method vs Sandwich Method
Two systems exist.
Magnetic liner is a liquid or felt-tip liner containing iron oxide particles. You draw a line, let it dry, and the magnets in the lash band stick to the dried liner. One strip per eye.
Sandwich magnets use two lash strips that snap together through your natural lashes, holding the falsies in place with no liner required.
If you're learning, start with liner. The sandwich method requires aligning top and bottom strips while looking in a mirror, and if the magnets snap together wrong, you either pinch your lid or end up with droopy, misaligned lashes. It also puts constant tension on your natural lashes, which can cause damage over time.
Liner has its own quirks, but placement is more intuitive. If you've ever applied liquid eyeliner, the motion is familiar.
If you're allergic to iron oxide, the sandwich method is your only option. But that's rare.
Where to Place the Strip
The strip shouldn't span your entire lash line.
Start where your natural lashes actually thicken, usually five or six millimetres in from the inner corner. Starting right at the edge causes irritation. The skin there is sensitive, and a band poking at it will drive you mad within an hour.
End just before your outer corner, not beyond it. Extending past the corner drags the eye down visually and puts the band on skin that moves constantly. That's a recipe for lifting.
For most people, this means the strip covers maybe 80% of the visible lash line. That's fine. You're not trying to reach the edges.
Cutting and Trimming
Almost every pair of magnetic lashes needs trimming to fit.
On regular glue lashes, you can cut anywhere. Magnetic lashes have anchor points, and you can only cut immediately after a magnet. Cutting through a magnet removes the anchor. Cutting between magnets leaves a chunk of band with nothing holding it down. Either way, that section will flap loose.
Look at the underside of the band. Find where the magnets sit. Your cut goes right after one, never through it or in the empty space between.
Sometimes getting the right fit means sacrificing more length than feels comfortable. If the outermost magnet sits beyond where the strip should end, you cut it off entirely and live with a slightly shorter lash. Forcing a too-long strip to work is how you get lifting corners and constant adjustment.
I've wrecked more pairs cutting in the wrong place than I'd like to admit. Check the magnets first.
The Outer Corner Problem
The outer corners of your eyes are where lashes fail first. The skin there stretches every time you smile, squint, or make any expression. It's also where tears migrate. Moisture plus movement equals weak point.
If you're using magnetic liner, apply an extra coat specifically at the inner and outer corners. You want more magnetic surface at the stress points. A thin coat across the lid with thicker reinforcement at the edges holds better than uniform application.
Some people go further: a thin line across the lid for placement, then tiny dots of extra liner right at the corners once the lash is on, pressing the band into fresh liner to lock it down. Overkill for most situations, but useful for events where you can't touch up.
Hooded Eyes Application
Hooded eyes present a specific challenge. The fold of skin above your crease interferes with placement. If you're using sandwich magnets, the hood gets in the way when you try to position the bottom strip. If you're using liner, the fold can smudge wet product before it dries.
Liner generally works better for hooded eyes. Look down into a mirror rather than straight ahead, so the hood lifts and exposes more of your lash line. Apply the liner, then keep looking down until it dries. Looking up too soon means the fold touches wet liner and transfers it.
For stubborn cases, there's a hybrid technique. Use magnetic liner as your primary hold, then add just the corner magnets from a sandwich set as backup anchors. Liner for placement, sandwich magnets for security.
Troubleshooting
Corners lifting is the most common complaint. Usually it's some combination of a band that's too stiff (bend it first), not enough liner at the corners (add more), or a strip that extends too far toward the outer edge (trim it shorter).
If they feel heavy, that's not a defect. Magnetic lashes are heavier than glue lashes because magnets have mass. Start with half-lashes or accent pieces until your eyes adjust. Most people stop noticing after a few wears.
Liner flaking or cracking through the day means the first coat wasn't dry when you applied the second. Magnetic liner needs to set between layers. If the bottom layer is still wet, it cures unevenly and breaks apart. Let each coat dry fully before adding more.
Liner that won't come off at night is a formulation issue, not a technique one. Magnetic liner is designed to resist water, otherwise sweat and tears would dissolve your lash hold. Regular micellar water won't cut it. Use an oil-based remover or cleansing balm. Let it sit for thirty seconds before wiping.
If you trimmed them and now they won't stay, you probably cut in the wrong place. Check where the magnets fall. If your cut left a section of band with no magnet, that section has no anchor. Trim again, cutting only immediately after a magnet.
If they're staying on but something looks wrong, that's a style problem, not an application one. When lashes are secure but the look is off, you've probably got the wrong style for your eye shape. See How to Choose Magnetic Lashes for Your Eye Shape to diagnose.
Making Them Last
Magnetic lashes are reusable, but "up to 30 wears" is a theoretical maximum. Real longevity depends on how you treat them.
Clean the magnets after every wear. Liner builds up on them, and buildup weakens the hold. A dry cotton swab or the edge of a fingernail to scrape off residue is usually enough. For stubborn buildup, a cotton swab dipped in rubbing alcohol works, but keep the alcohol away from the lash fibres. It dries them out and ruins the curl.
Store them in a case. The original packaging works fine. Throwing them loose into a makeup bag where they get crushed, bent, or stuck to something magnetic does not work. A bent lash can sometimes be reshaped with gentle pressure. A crushed one is done.
Don't soak them. Some guides suggest soaking lashes in micellar water. That's advice for glue lashes. Magnetic lashes have metal components that can corrode, and prolonged moisture loosens the fibres from the band. Clean the magnets, leave the rest alone.
The Learning Curve
The first few times will be slow and probably frustrating. You're training muscle memory for something that requires precision, and you're doing it in a mirror where everything is reversed.
By the fifth or sixth wear, you'll have a feel for how the lashes sit on your particular eyes, where they want to lift, and how much liner you need. By the tenth, application takes two minutes. The early frustration isn't a sign that magnetic lashes don't work for you. It's the cost of admission.
If you're confident in your technique but still not happy with how the lashes look, the issue might be style rather than application. See How to Choose Magnetic Lashes for Your Eye Shape to make sure you're working with lashes that suit your eyes.