Pro Tips › Lashes
Lash Extension Supplies:
What Professional Techs Actually Need
- Trays & Curls
- Adhesive
- Tools
- What to Buy First
A working lash extension kit comes down to six things: lash trays in the curls and lengths you actually use, a cyanoacrylate adhesive matched to your speed and your room, isolation and volume tweezers, prep and cleansing products, disposable consumables, and a way to control the humidity and temperature your adhesive cures in. Everything else is refinement.
Most techs buy their supplies twice. The first time is a starter kit chosen on price, and the second time is six months later, once they have worked out which curls their clients actually book, which adhesive suits their hands, and why retention was never the client's fault. This guide is written to skip that second purchase.
It covers what belongs in a professional kit, how to choose within each category, how much to hold, and the handful of items that are genuinely worth spending on. No prices — stock levels and specifications are the parts that change the outcome.
Kit List
The short version: a professional kit list
If you want the list before the reasoning, this is it.
Lashes and adhesive
- Lash trays — classic and volume, in the curls and lengths your client base books
- Cyanoacrylate lash adhesive, matched to your speed and your room's humidity
- Adhesive remover — gel or cream
- Lash primer and protein remover pads
- Superbonder or adhesive sealant (optional, but useful in a humid climate)
Tools
- Isolation tweezers — straight or curved
- Volume tweezers — L-shape or boot, if you fan
- Glue ring, jade stone or adhesive holder
- Lash mapping tools — mapping strips or a mapping pen
- Nano mister (optional)
- Lash comb or spoolies
Prep, hygiene and consumables
- Oil-free foam lash cleanser (in-salon and retail sizes)
- Under-eye gel pads and micropore tape
- Micro brushes and disposable mascara wands
- Nozzle wipes and lint-free applicators
- Disposable gloves and a surface disinfectant
The room
- A comfortable, adjustable bed and a stool that lets you sit square to the client
- A lamp with magnification
- A hygrometer, and a way to change what it reads
Now the detail that decides which version of each you buy.
Lash Trays
Curls, thicknesses and what to stock
Lash trays are where most of your stock budget goes, and where most of it gets wasted. The trap is buying broadly — every curl in every length — instead of buying deeply in the ten or twelve combinations you will use every week.
Curl
Curl is the single most important variable in the finished look, and it is chosen against the client's natural lash direction, not against the picture on their phone.
- B curl — a soft, natural lift. Best on lashes that already point slightly upwards, and on clients who want the result to be undetectable.
- C curl — the workhorse. Suits most straight-to-slightly-curled natural lashes and gives visible curl without drama.
- CC and D curl — a strong, open-eye lift. Excellent on downward-pointing lashes, and the curls clients ask for by name. The trade-off is a smaller bonding surface against the natural lash, which shortens retention if isolation is not clean.
- L and L+ curl — a flat base with a sharp upward kick. These are the answer for hooded eyes and very downward-growing lashes, where a D curl would simply point into the eyelid.
- M curl — increasingly popular for a lifted, “wet look” set; sits between D and L in behaviour.
Stock C and D deeply. Add B for natural sets and L for hooded clients — those two solve problems no other curl solves.
Thickness
Thickness is a weight decision, not a style decision. The natural lash can only carry so much before the extension puts load on the follicle.
- 0.15–0.20 mm — classic sets only, and only on strong natural lashes. Many techs have moved away from 0.20 entirely.
- 0.10–0.12 mm — classic sets on average lashes; the safest classic range.
- 0.03–0.07 mm — volume work. The thinner the individual lash, the more you can fan without exceeding the weight the natural lash will carry.
The rule that keeps lashes healthy
One extension per natural lash, and the fan's total weight no greater than the natural lash can support. A 5D fan of 0.05 mm lashes weighs more than a 3D fan of the same — count the weight, not the drama.
Length
Buy mixed-length trays for flexibility and single-length trays for the two or three lengths you reach for constantly. Most sets live between 8 mm and 14 mm, with the shorter lengths in the inner corner. Anything above 14 mm is a specialist purchase, not a staple.
Material and finish
Nearly all professional lashes are PBT (polybutylene terephthalate) — the differences between suppliers are in the consistency of the curl, how cleanly the lashes lift off the strip, and how well the tips taper. A cheap tray announces itself the moment you try to pick from it: lashes come away in clumps, the adhesive strip is tacky, and the curl varies down the row. That is time out of your appointment, every appointment.
Browse the full range of lash trays to see the curl, thickness and length combinations available.
How much to hold
For a tech working full-time, a practical baseline is C and D curl in 0.07 mm (volume) and 0.10 mm (classic), in mixed trays covering 8–14 mm, plus single-length trays in your three most-used lengths. Add B and L curl in your most-used length. That is roughly eight to ten trays, and it will cover the large majority of bookings without dead stock sitting in a drawer.
Adhesive
The item that decides your retention
Professional lash adhesive is cyanoacrylate. It cures by reacting with moisture in the air — which is why the same bottle behaves like a different product in a Brisbane summer and a Melbourne winter.
Three specifications matter:
- Drying speed. Fast adhesives (roughly 0.5–1 second) suit experienced techs placing lashes quickly. Slower adhesives (2–3 seconds) give you time to correct placement, and are the right choice while your speed is still building. A fast adhesive in slow hands cures before the lash lands, and you will blame retention on everything except the bottle.
- Viscosity. Thinner adhesives pick up in smaller, cleaner beads and suit volume work. Thicker adhesives are more forgiving on classic sets.
- Humidity range. Every professional adhesive states the humidity and temperature band it is designed to cure in — commonly somewhere around 40–70% relative humidity and 18–24 °C. Outside that band, cure time and bond strength both change.
Storage and shelf life do more damage than technique
An unopened bottle keeps best in a cool, dark, dry place — not the fridge, where condensation forms inside the bottle on removal. Once opened, most adhesives are good for four to eight weeks, and that clock runs whether you use the bottle or not. Write the open date on every bottle. Shake before each use, wipe the nozzle after every use, and store it upright with the cap firm.
Buy small bottles more often rather than large bottles occasionally. Adhesive is the one supply where bulk buying costs you money, because the second half of a large bottle is usually past its best before you reach it.
Adhesives, primers and removers sit together in the adhesives and removers range.
Tools
Tweezers: buy well once
Tweezers are the tools you will hold for six hours a day, and the difference between a good pair and a cheap pair is felt in your hands by mid-afternoon.
Every set
Isolation tweezers
Straight or gently curved, with a fine, precisely aligned tip. This is the pair that does the work nobody sees — separating one natural lash from its neighbours. Poor isolation is the most common cause of stickies, premature shedding and client discomfort.
Volume work
Volume tweezers
L-shape (boot) or a wider curved profile, chosen by how you make fans. Fibre-tip and lash-grip finishes hold a fan without letting it slide, which matters more than the shape you learned on.
Check tip alignment when they arrive — hold them to the light closed, and look for daylight between the tips. Keep them clean of adhesive with a dedicated tweezer cleaner rather than picking cured glue off with your nails, which springs the tips. Have a second isolation pair so a dropped tweezer does not end an appointment.
The tweezers and accessories range covers both isolation and volume profiles.
Prep
The step retention actually depends on
Extensions bond to a clean lash or they do not bond at all. Natural oils, makeup residue, skincare and sunscreen all sit on the lash and stop the adhesive reaching it.
- Oil-free foam lash cleanser — used at the start of every appointment, no exceptions, including on clients who arrive saying they are not wearing makeup.
- Protein remover / lash primer — lifts the residual protein and oil film that cleanser alone leaves behind, and slightly opens the lash cuticle for the adhesive.
- Lint-free applicators and micro brushes for applying both.
Cleansing costs you three minutes and buys you a week of retention. It is also the first thing that gets dropped when an appointment is running late, which is why so many retention problems are seasonal rather than technical.
Foam cleansers and prep products are in the lash cleansers range — and the retail sizes are a genuine revenue line, not an afterthought. A client who cleanses at home rebooks with more lashes still on.
Consumables
The quiet budget, removers and the room
Consumables
These are individually cheap, run out silently, and stop an appointment dead when they do: under-eye gel pads (and a hydrogel option for sensitive clients), micropore tape, micro brushes in at least two sizes, disposable mascara wands, glue rings or jade stones, nozzle wipes, disposable gloves and surface disinfectant.
Count these weekly, not when they run out. A standing wholesale order beats an emergency trip to the chemist between clients.
Removers
Keep a remover on hand from day one, because the set you need to take off in a hurry is never the one you planned for.
- Gel remover — fast, best in experienced hands, and needs careful containment away from the eye.
- Cream remover — thicker, slower, less likely to migrate. The safer default, particularly on sensitive clients.
- Liquid remover — fastest and most mobile; generally reserved for very controlled, experienced use.
Whichever you choose, work over sealed under-eye pads and follow with a full cleanse.
The room: humidity, temperature and light
The environment is the supply nobody puts on a stock list, and it changes adhesive behaviour more than any product swap.
- A hygrometer — you cannot manage a variable you are not measuring. Put one on the bench where you can see it mid-set.
- A way to change the reading — a small humidifier for dry winter rooms, a dehumidifier or air conditioning for humid summers.
- Lighting with magnification — good light is the difference between clean isolation and hopeful isolation, and it protects your eyes over a long career.
- A bed and stool at the right heights — a lash career ends with your neck and shoulders, not your hands. Set the bed height to your seated posture, not the other way round.
- Ventilation — cyanoacrylate fumes accumulate in small closed rooms. Ventilate between clients, and consider a filtration unit if you lash all day.
Complete lash extension kits are a straightforward way to cover the core tools and consumables in one order, then build out from there.
Priorities
What to buy first, and what can wait
| Buy now |
Buy in month two |
Buy when you need it |
| C and D curl trays, classic and volume |
B and L curl trays |
Specialist lengths above 14 mm |
| One adhesive matched to your speed |
A second, faster adhesive as you speed up |
Coloured or speciality lashes |
| Isolation tweezers (×2) |
Volume tweezers in a second profile |
Nano mister |
| Foam cleanser and primer |
Retail cleanser stock |
Superbonder / sealant |
| Under-eye pads, tape, micro brushes |
Mapping tools |
Air filtration unit |
| Remover |
Hygrometer and humidity control |
Second bed or trolley |
The pattern: buy depth in the things you use every appointment, and buy breadth only once your bookings prove you need it.
Three things not worth your money
- A very large starter kit. The trays you never touch are the majority of what you paid for, and adhesive that sits unopened for three months is already past its best.
- Cheap tweezers. They arrive misaligned, they spring, and they cost you time on every single lash.
- Adhesive bought in bulk. The shelf life runs whether or not the bottle is open. Small and frequent wins.
FAQ
Frequently asked questions
What supplies do I need to start doing lash extensions professionally?
At minimum: lash trays in C and D curl across classic and volume thicknesses, a cyanoacrylate adhesive suited to your working speed, isolation tweezers, volume tweezers if you fan, an oil-free foam cleanser and primer, under-eye gel pads, micropore tape, micro brushes, a glue ring or jade stone, and a remover. Add a hygrometer early — adhesive behaviour depends on the room as much as the product.
How long does lash extension adhesive last once opened?
Most professional cyanoacrylate adhesives last four to eight weeks after opening, and the manufacturer's figure is the one to follow. The clock runs from the date you open the bottle regardless of how much you use, so write the date on the bottle. Unopened, store it cool, dark and dry — not in the fridge, where condensation forms inside the bottle when you take it out.
What lash curls should I stock as a new lash tech?
Stock C and D curl deeply — between them they cover most client bookings. Add B curl for genuinely natural sets and L or L+ curl for hooded eyes and downward-growing lashes, which no other curl handles well. Buying depth in a few curls beats buying one tray of everything.
Why do my lash extensions fall off early?
Retention problems usually trace back to one of four things: incomplete cleansing before the set, adhesive used outside its humidity or temperature range, adhesive past its opened shelf life, or isolation that has attached the extension to more than one natural lash. Work through them in that order — the cleanse and the humidity reading solve most cases.
What humidity do lash extensions need?
Most professional adhesives are formulated to cure somewhere around 40–70% relative humidity at 18–24 °C, but the band is product-specific — check your bottle. Outside the range, cure time and bond strength both shift. A hygrometer on the bench and a small humidifier or dehumidifier is a cheaper fix than changing adhesive.
What is the difference between classic and volume lash supplies?
Classic sets use one extension per natural lash, typically 0.10–0.15 mm thick, and need isolation tweezers only. Volume sets use a fan of several much finer extensions — usually 0.03–0.07 mm — on each natural lash, which needs volume tweezers, a thinner adhesive and a weight calculation so the fan does not overload the natural lash.
Do I need a nano mister?
No — it is a refinement, not a requirement. A nano mister accelerates the final cure of the adhesive at the end of a set, which some techs find helps in dry conditions. Get your cleansing, humidity control and adhesive freshness right first; those three account for far more of your retention than misting does.
Trade Account
Stock your lash room from one supplier
Salon First supplies professional lash techs across Australia with lash trays, adhesives and removers, tweezers and accessories, complete kits and cleansers — with wholesale pricing for registered salon professionals. Building the retail side as well? The lash and brow retail range covers the aftercare that protects the set you just spent two hours applying. New to extensions? Salon First training covers the technique this guide assumes.