How Much Lash Inventory Should You Really Keep On Hand?
If you've ever stood in your stockroom wondering whether you've got too much product gathering dust - or panicked mid-fill because you're down to your last drop of adhesive - you're in good company. Figuring out how much to keep on hand is one of the most common questions lash artists ask, whether you're setting up your very first studio or running a fully booked salon.
The good news: you don't need a warehouse or a finance degree to get this right. You just need a simple system. Here's how to stock smart, avoid waste, and keep your cash where it belongs.
Start small, then let your numbers lead
When you're new, the instinct is to buy everything at once so you're "ready for anything." Resist it. Overbuying ties up cash in product that may expire before you use it, and it makes your stockroom harder to read at a glance.
A better approach: start lean and let real demand tell you what to reorder. For retail products especially, a starting batch of around 20-30 units is plenty to learn what your clients actually buy. Once you see what moves, you can confidently stock more of your winners and quietly phase out the rest.
Sort your stock with the ABC method
Not every item deserves the same attention. A quick, salon-friendly way to organize your shelves is the ABC method, which groups products by how valuable and fast-moving they are:
A items - your high-demand, high-value essentials. Think lash adhesive and your top-selling retail products. These drain fastest and cost you the most when you run out, so check them most often.
B items - steady, moderate movers. Reliable but not urgent. A weekly glance keeps these in balance.
C items - occasional extras and niche products that rarely move. A light check every couple of weeks is all they need.
This simple sort turns a chaotic backbar into clear patterns, so you spend your energy watching the products that matter most.
Set reorder points so you never run dry
A reorder point is just the stock level that signals "time to buy more" - before you hit zero, not after. To set one, think about two things: how quickly you go through an item, and how long it takes your supplier to deliver.
For example, if you use roughly one bottle of adhesive a week and your supplier takes a week to ship, your reorder point is at least two bottles on the shelf (one to cover the wait, one as a cushion). Mark that level, and reorder the moment you hit it. Do this for your A items first — they're the ones that hurt most when they're gone.
Don't forget shelf life
Lash products aren't forever, and adhesive is the big one to watch. Unopened lash glue typically expires within about six months, and once you open a bottle, it's best used within a month. That's exactly why buying in bulk to "save money" can backfire - expired glue is just money in the trash, and it can quietly hurt your retention too.
When you do a stock check, glance at dates as well as quantities. Rotate older product to the front so it gets used first, and build your reorder amounts around what you'll realistically use before things turn.
A quick weekly rhythm
You don't need a complicated system - just a consistent one. Pick one day each week for a quick visual count of your A and B items. In ten minutes you'll spot what's running low, what's piling up, and what's creeping toward its expiration date. Done regularly, this small habit prevents almost every stockroom emergency before it happens.
Tired of tracking it all by hand? Counting bottles on a notepad works - until it doesn't. Our app keeps tabs on your stock levels, flags low items before you run out, and reminds you when product is nearing its expiration date, so you can spend less time in the stockroom and more time with your clients. Download the app and let your inventory manage itself.