Inventory control in an aesthetic center: the cabin protocol that stops shrinkage
The stock that leaks out of an aesthetic center almost never shows up on an invoice. It’s the cabin jar that runs out early, the product used a little extra "to finish properly," or the one nobody logged. It isn’t theft: it’s the absence of a protocol connecting each treatment to what it consumes. Here is that protocol, from consumption per service to the inventory count that reconciles theory with the shelf.
The problem: the shrinkage that shows up on no invoice
In an aesthetic center there are two ways to lose product. One is visible: what gets sold and charged. The other is silent: what gets consumed in the cabin without leaving a trace. You buy a batch, it goes into the room, and from there no one knows how much was used per session or how much should be left. Cabin product has no sale event to deduct it, so its leak stays invisible until you open the cupboard and the jar is empty.
That silent shrinkage isn’t necessarily theft. It’s an extra dose "to finish properly," product that expires unused, containers thrown away half full, or a consumption no one defined and each practitioner interprets their own way. Without a protocol tying each treatment to what it spends, stock stops being data and becomes a surprise: you find out something is missing once it’s already missing.
The leak in grams
What escapes most isn’t the expensive item that gets stolen, but the cheap one wasted session after session. Without a defined consumption per service, every extra gram is a loss that appears in no report and that you only notice when the reorder arrives ahead of time.
Start with consumption per service
You can’t control what you haven’t defined. The first step of any serious stock control in aesthetics is the consumption-per-service sheet: how much product, on average, each treatment spends. Until that number exists, there’s no way to know how much stock you should hold or how much you should have spent on a fully booked day.
Defining it isn’t a laboratory exercise: it’s agreeing on a reference dose per service and writing it down for the whole team. From then on, every booked appointment carries an associated theoretical consumption, and that theoretical consumption is the yardstick that measures shrinkage. If the calendar says twenty treatments were done and the jar has emptied as if there were thirty, you now have a question you couldn’t even ask before.
- Product and quantity: which reference is used in each service and at what reference dose.
- Associated consumable: gloves, heads, gauze, or any disposable the session spends.
- Expected waste: the small unavoidable discard of each application, counted, not ignored.
- Who reorders: who spots it and who orders, so no one assumes someone else already did.
Cabin product vs retail product: two worlds, two controls
Putting all stock in the same bag is the mistake that makes shrinkage invisible. Retail product and cabin product behave differently and need different controls. Retail deducts itself: every unit that leaves through the till is recorded in your billing, so its stock reconciles with sales almost effortlessly.
Cabin product is another story. It has no receipt, doesn’t pass through the till, and its exit depends on a treatment, not a sale. That’s why shrinkage almost always lives in cabin product: it’s the only one whose consumption isn’t recorded by default. Separating the two worlds —and applying the consumption per service you defined to the cabin— is what turns "I don’t know where the product goes" into an account you can review.
Shrinkage lives where there’s no receipt
Retail product controls itself because every exit is a charge. Cabin product doesn’t, because its exit is a treatment with no record. If you only watch what passes through the till, you’re looking at exactly the half of your stock that doesn’t leak.
Minimum stock and alerts: let the system warn you, not the empty shelf
Finding out a product has run out halfway through a session is the worst possible moment. Threshold-based stock control exists to prevent it: you assign each reference a minimum —the point below which you have to restock— and the system warns you before hitting zero, not after.
The minimum isn’t a random number: it comes from your consumption per service and your supplier’s lead time. A product you spend fast and that takes a while to arrive needs a bigger buffer than a slow-moving one with immediate delivery. When minimum stock and alerts live in the same tool as the calendar and inventory control, restocking stops depending on someone checking the cupboard and becomes a warning that arrives on its own.
Purchasing with foresight, not in a panic
Buying in a panic —when there’s nothing left— is expensive on two fronts: you pay for rush shipping and you risk canceling treatments for lack of materials. Buying with foresight is the opposite: anticipating demand from what’s already booked and what you usually consume, so the order arrives before you need it.
Foresight isn’t fortune-telling: it’s arithmetic. If your calendar for the coming weeks says how many treatments of each type you’ll do, and your consumption per service says how much each one spends, the quantity to order appears on its own. With that data in analytics you can see which references move most, which stall, and when to place the order, instead of reacting when the shelf is already empty.
The periodic inventory: the close that reconciles theory with the shelf
Everything above builds a theoretical stock: what the system believes you hold based on inflows and consumption. The periodic inventory is the moment to check it against reality, physically counting what’s on the shelf. The difference between theoretical and real is, literally, your measured shrinkage.
Doing it regularly has two effects. First, you correct the figure so alerts and forecasts stay reliable. Second, and more valuable, the deviation tells you where to look: if a cabin product always drifts, maybe your reference dose is miscalculated, or there’s a consumption no one records. The inventory stops being a dreaded chore and becomes the check that keeps the whole system honest.
Illustrative center (example scenario, not measured)
Imagine a center that counts inventory and finds a cabin product is spent noticeably faster than its calendar justifies. It reviews the reference dose, adjusts it, trains the team, and at the next count the deviation has shrunk. The concrete quantities depend on each center: this illustrates how inventory turns a suspicion into an action, not a real result measured in Qleven.
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