Here's a way of thinking about salon inventory management that changes how you handle it: the stock on your shelves isn't stock. It's cash.
Every tube of color, every bottle of developer, every box of foils is money you've already spent, sitting there not earning anything until it's used on a client or sold to one.
Keep too little and you're turning away color appointments or making emergency runs to a supplier at retail prices. Keep too much and your cash is tied up on a shelf instead of in your account, quietly losing value to expiry and waste.
Most advice on this topic gives you tips — count regularly, don't overstock, watch your back bar. Useful, but tips aren't a system, and tips are exactly the thing you forget in a busy week.
This is a system instead.
It takes an afternoon to set up, then about fifteen minutes a week to run. Once it's in place, it holds itself together on a routine rather than relying on you to remember.
Here's how to build it to get your inventory working for you, effortlessly.
Start by splitting your inventory in two
Before you count anything, separate every product you hold into two groups. They behave differently, they're budgeted differently, and treating them as one pile is where most salon inventories go wrong.
Back bar
Back bar is everything used on clients during a service — color, developer, foils, the shampoo and conditioner at the basin, styling products applied in the chair. It stays in the salon. It's a cost of delivering the service, not a source of revenue.
Back bar is also where the quiet waste lives.
Over-pouring, over-mixing, and the simple fact that nobody's really watching it means product disappears faster than it should.
A useful benchmark: back bar typically runs around 5–10% of your service revenue. If that number starts drifting upward without more services to explain it, something is leaking.
Retail
Retail is everything you sell to clients to take home.
This is revenue, it's taxed differently from back bar, and it needs a different kind of discipline — because an empty retail shelf isn't just untidy, it's a sale you didn't make.
A client ready to buy the shampoo you used on them is the easiest money in the salon, and you only get it if it's in stock.
Why the split matters: back bar you want lean and controlled, retail you want available and turning.
Those are different goals with different success measures, and you can't manage toward both if the two are mixed together in one list. (Blurring them is one of the most common inventory errors — we cover the rest in our guide to 7 salon inventory mistakes to avoid.)
Set a par level and a reorder point for every product
This is the mechanical heart of the system, and it hinges on two numbers that sound similar but do completely different jobs. Getting them confused is the single most common reason inventory systems fall apart.
- Par level is the amount you want on the shelf after you restock. It's your top-up target.
- Reorder point is the level that triggers a new order. It's your trip-wire.
Here's how they work together. Say a product has a par level of 10 and a reorder point of 4. When your stock drops to 4, that's your signal to order — and you order enough to get back up to 10, so you buy 6.
One number tells you when to order; the other tells you how much. Try to run both roles off a single number and your ordering becomes guesswork.
How to set your par levels without guessing
Base your par level on how much you actually use, not on a feeling. A rough method: take your typical monthly usage and add a buffer to cover how long your supplier takes to deliver.
The right level depends entirely on the product. Two examples that show the range:
- A fast, cheap consumable — say you use 400 gloves a month. Set par high, around 800–1,000. Running out shuts down services, and the cost of holding a few extra boxes is almost nothing.
- A slow, expensive specialty item — say a treatment you perform five times a month. Set par low, around 2–5 units. Here the risk runs the other way: tie up cash in specialty stock and it sits until it expires.
The principle underneath both: set your levels by weighing the consequence of running out against the cost of holding. Cheap and critical? Stock deep. Expensive and occasional? Stock thin.
Whatever tool you keep this in, the target-stock and reorder-level fields are where these two numbers live — in MyCuts, for instance, they map directly onto par level and reorder point, so the system runs from the record rather than from memory.
Use ABC analysis to decide where your attention goes
Not every product deserves the same amount of your time. A simple sorting method borrowed from retail — ABC analysis — tells you where to focus.
Rank every product by how much it sells or gets used over a year, then group them into three bands:
- A items — the roughly 20% of your products responsible for around 80% of your sales and usage. Your workhorse colors, your best-selling retail lines. Count these often, never let them run out, and negotiate hardest on their price.
- B items — steady, reliable movers. Keep moderate stock and review them monthly.
- C items — the slow half of your list. Minimal stock, and be honest with yourself about which of these are simply dead.
To do it, list everything, rank by annual usage or sales, and draw your lines. The payoff is focus: most of your cash and most of your risk sit in a small number of A items, which is exactly why a short weekly count of just those items is worth more than an exhausting annual count of everything.
Come back to the cash frame here. C items are where money quietly goes to die — bought once, never sold, taking up space and budget.
Clearing dead stock and resisting the urge to reorder it is one of the fastest ways to free up cash, which is the whole point of keeping your shelves stocked without overstocking.
Build the counting routine — this is the part that makes it self-running
A system that depends on a heroic once-a-year inventory count isn't a system, it's an annual crisis. The thing that actually keeps your numbers honest is small, frequent, focused counting — cycle counting.
A weekly count of your A items beats an annual full count every time. It catches problems while they're still small, and it never requires you to close the salon for a day.
Weekly
A quick visual count of your A items and top movers. Pick the same day each week and stick to it. This is what catches leaks — theft, over-pouring, a supplier who short-shipped you — while the gap is small enough to notice and fix.
Monthly
A wider count that brings in your B items. Check expiry dates while you're at it, and ask whether your par levels still match reality — usage shifts with seasons and trends, and levels you set in January may be wrong by June.
Quarterly
A full count of everything, reconciled against what your records say you should have. This is when you recalculate par levels for anything that's moved and clear out what's genuinely dead.
Two habits make every count more accurate.
First, log products the moment they're opened, not when they run dry — an opened bottle is committed cost, and treating it as "still in stock" is how your counts drift.
Second, record product used or sold at the point it happens, tied to the appointment it belongs to, so your stock figures never wander far from the truth.
When product is recorded against an appointment in MyCuts, saving that appointment deducts it from stock automatically — so the count stays honest without a separate admin job at the end of the day.
The four numbers worth watching
Once your system is running, a handful of numbers tell you whether your inventory is working for you or against you. You don't need to be an accountant — you just need to know what these mean.
Inventory turnover = cost of goods sold ÷ average inventory value.
It tells you how many times a year you sell through your stock. A low number means cash is sitting idle on your shelves. A very high number sounds good but can mean you're understocking and risking stock-outs.
Days on hand = 365 ÷ turnover.
The same idea expressed in days — how long the average product sits before it's used or sold. Shorter generally means healthier cash flow.
Carrying cost
Holding inventory costs you roughly 20–30% of its value per year, once you account for storage, the cash tied up, shrinkage and expiry.
Put concretely: $10,000 of slow-moving stock is quietly costing you $2,000–3,000 a year to hold, before you've sold a single bottle of it.
Shrinkage
The gap between what your records say you have and what's actually on the shelf — typically 3–8% of inventory value. A number that stays stubbornly high is usually pointing at theft, over-pouring, or sloppy logging, and it's worth investigating rather than shrugging off.
On tools: software keeps the accurate stock counts these calculations depend on, but the profit maths — margin, true COGS — is something you or your accountant work out from those figures.
A system that tracks your stock reliably is giving you the clean inputs; it isn't doing your books for you. Knowing which job you need doing saves you expecting the wrong thing from the wrong tool.
Putting it together — your setup checklist
Here's the whole system as a sequence you can work through in an afternoon:
- Split every product into back bar or retail.
- Rank them A, B or C by annual usage or sales.
- Set a par level and a reorder point for each — start with your A items and work down.
- Record suppliers and current stock in one place, so ordering is a two-minute job rather than a hunt.
- Pick your weekly count day and put it in the calendar.
- Log product use and sales as they happen, against the appointment where possible.
Set it up once, and the weekly rhythm keeps it true. The whole thing gets considerably easier when your stock lives alongside the appointments that consume it, rather than in a spreadsheet you have to remember to update separately — because then the recording happens as part of the work, not as a chore on top of it.
Frequently asked questions
What's the difference between back bar and retail inventory?
Back bar is product used on clients during services — color, developer, foils, basin products. It stays in the salon and is a cost of delivering the service. Retail is product sold to clients to take home, and it's a source of revenue.
They're budgeted, taxed and managed differently, which is why you should track them as two separate groups rather than one.
How often should I count salon inventory?
Count your top-selling and highest-use items weekly, do a wider count including steady movers monthly, and run a full count quarterly.
Frequent small counts of your most important products catch problems earlier and are far less painful than a single annual inventory of everything.
What is a par level in a salon?
A par level is the amount of a product you want to have on hand after restocking — your top-up target. It works alongside a reorder point, which is the lower level that triggers a new order. When stock hits the reorder point, you order back up to the par level.
How much stock should a salon keep on hand?
It varies by product. Cheap, high-use consumables like gloves and foils should be stocked deep, because running out disrupts services and holding extra costs almost nothing.
Expensive, slow-moving specialty items should be stocked thin, because tying up cash in stock that might expire costs more than an occasional short wait. As a rough guide, back bar spend often sits around 5–10% of service revenue.
What's the best way to track salon inventory?
For a very small operation a spreadsheet can work, but it relies entirely on you remembering to update it.
A dedicated tool that tracks stock levels, reorder points and suppliers — ideally alongside your appointments and client records, so product use is logged as part of the workflow — keeps your counts accurate with far less effort and far less drift.
The point of all this
A good inventory system isn't really about counting bottles. It's about keeping your money moving — working in your business rather than sitting on a shelf losing value.
The system that does that isn't complicated: split back bar from retail, set par levels and reorder points, focus your attention on your A items, and keep it honest with a short weekly count.
None of it depends on willpower or a good memory once the routine is in place. It just runs.
If you'd like your stock, reorder levels and suppliers tracked in the same place as your appointments and clients, MyCuts does exactly that, and it's free to start — no card required.
Set it up once, keep to your weekly fifteen minutes, and let the system do the remembering for you.
