Eyelash Extensions FAQ
LashFad
Whether you're getting lash extensions for the first time or you're a seasoned lash lover, questions always come up. We've compiled the most common ones — answered honestly by our team of professional lash artists.
Before Your Appointment
Q1: How do I choose the right lash extension style?
Start by deciding on the look you want, then work out the length and thickness with your lash artist.
Different lash styles create very different effects depending on your eye shape. Before your appointment, browse some reference photos and bring them along — your lash artist can then help you choose what will actually suit your eyes, rather than just what looks good on someone else.
If you wear glasses daily, make sure to mention it. Lash length and curl need to account for your lenses, otherwise you'll end up with lashes that constantly brush the glass.
Q2: What materials are lash extensions made from?
Most professional lash extensions today are made from synthetic PBT fiber — not real mink, despite what some brands claim.
At Fadlash, all lashes are 100% vegan and cruelty-free. Our Korean PBT silk lashes are soft, lightweight, and fluffy — making them easy for lash artists to work with and comfortable for clients to wear. The material is less important than the skill of the artist applying them; even the best lashes won't look great if the technique is poor.
Q3: Can people with sensitive or irritated eyes get lash extensions?
Generally yes — but timing matters.
The standard application process doesn't touch the skin or eyes directly; extensions are bonded to your natural lashes, not your eyelid. The main risks come from low-quality adhesives or tools, or from getting extensions while your eyes are already inflamed or allergic.
If your eyes are currently irritated, wait until symptoms fully resolve before booking. Applying extensions over an existing reaction can make things significantly worse. If you're prone to allergies, ask your lash artist to use a sensitive-formula adhesive and patch test 24 hours before a full set.
Q4: What curl types are available?
The two most popular curls are C curl and D curl:
- B/J curl — Very subtle lift, closest to a natural lash. Good for clients who want the most understated result.
- C curl — A gentle, natural-looking curve. Great for clients who want longer-looking lashes without obvious curl, especially those who don't wear heavy eye makeup daily.
- D curl — More pronounced lift that makes eyes look bigger and brighter. The most popular choice for a "done" look.
- CC/DD curl — Between C and D, or more dramatic than D. Good for downward-pointing natural lashes.
- L curl — Right-angle base with upward curve, designed for monolids, inner double lids, and hooded eyes.
Your lash artist will factor in your natural lash direction and eye shape when recommending a curl.
During the Application
Q5: How many lash extensions should be applied?
The ideal number follows your natural lash count — typically around 120 to 140 extensions per eye for a classic set.
Because each extension is bonded one-to-one to a single natural lash, you can't apply more extensions than you have natural lashes to attach them to. Applying too many — or using extensions that are too heavy — puts stress on natural lashes and can cause breakage. A good lash artist stays within your natural lash capacity.
Q6: Why do some lash artists attach extensions to the eyelid skin?
They shouldn't — and if yours does, it's a red flag.
The correct placement is 0.1–0.2mm away from the lash root, bonded to the natural lash itself. Attaching extensions directly to the eyelid or hair follicle causes irritation, inflammation, and foreign body sensation. If this happens to you, don't try to adapt to it. Ask your artist to remove and redo the set correctly, or find a better-trained technician.
After Your Appointment
Q7: How long do lash extensions last?
Realistically, 30 to 45 days before a refill is needed.
Lash extensions are bonded to your natural lashes and fall out as part of the normal lash growth cycle — losing 3 to 5 lashes per day is completely normal. Most clients find they need a refill after 2 to 4 weeks once shedding becomes noticeable. The claim that extensions can last more than 3 months is not realistic; the natural lash cycle is only around 60 days, and extensions can't outlast the lash they're attached to.
If you're losing a large number of extensions within the first week, it's worth checking in with your artist — it could be a technique issue, a product issue, or a gap in aftercare.
Q8: Do lash extensions damage natural lashes?
Not when applied correctly.
The key principle of safe lash extension application is one extension per natural lash, with the correct placement and weight. When this is followed, natural lashes aren't stressed. Problems arise when extensions are too heavy, too long, or stuck to multiple lashes at once — all signs of poor technique.
If your natural lashes feel thinner or weaker after extensions, the issue is almost certainly application quality, not extensions as a concept.
Q9: Can people with monolids or hooded eyes get lash extensions?
Yes — the L curl was specifically designed for this.
The L curl has a more angular base that lifts the lash outward and upward, avoiding the common problem of extensions pointing inward or touching the eyelid on monolid eye shapes. Let your artist know your eye shape during your consultation so they can choose the right curl accordingly.
Q10: Will sweating or exercise cause extensions to fall out faster?
Not significantly, as long as the application was done well.
The retention of your lashes depends much more on application technique and aftercare than on lifestyle factors like exercise. A well-bonded set can handle sweat. The one thing to avoid is rubbing or pressing on your lashes after a workout — pat them dry gently instead.
Aftercare & Maintenance
Q11: How do I care for lash extensions to make them last longer?
Follow these aftercare habits:
- Avoid water for the first 24–48 hours after application to let the adhesive fully cure.
- Use an oil-free cleanser around the eye area — oil breaks down lash adhesive.
- Brush your lashes daily with a clean spoolie, especially after sleeping.
- Sleep on your back or use a silk pillowcase to reduce friction.
- Use a lash serum on your natural lashes at the root to strengthen them and support retention.
- Some artists also use lash primer before application and super bonder after to improve adhesion from the start.
Q12: My lashes are messy when I wake up — is that normal?
Yes, completely normal. Just brush them back into place.
Use a clean lash brush (spoolie) and gently comb through from base to tip in one direction. This restores the alignment after sleeping. Making this a daily habit keeps your lashes looking neat and helps you spot early shedding.
Q13: Can I still wear eye makeup with lash extensions?
Yes — and in many cases, you'll need less of it.
Eye shadow is fine as usual. Eyeliner on the upper lash line becomes largely optional, since the density of extensions creates a similar effect. If you do use eyeliner, stick to water-based formulas and apply carefully to avoid getting product in the lash line.
For mascara: skip it entirely on the extensions. If you want more length on the tips, use a water-based mascara only on the very ends, never at the base.
Q14: How do I remove eye makeup without damaging my extensions?
Use an oil-free micellar water or water-based makeup remover.
Oil-based removers dissolve lash adhesive — the same way professional lash remover works — and will cause premature shedding. Apply remover to a lint-free pad and press gently against closed eyes, then wipe in one direction. Avoid rubbing back and forth across the lash line.
Q15: How often do I need refills?
Most clients refill every 2 to 3 weeks.
At this point, enough natural lashes have cycled out that the gaps become visible. A fill tops up the set without doing a full removal and reapplication. If you wait longer than 4 to 5 weeks, there may not be enough extensions remaining to fill — a full new set may be needed instead.
Still Have Questions?
Browse our full range of professional lash supplies at Fadlash, or get in touch with our team — we're happy to help you find the right lashes for your clients or your style.
Last updated: May 2026