Quick Answer
A lash ABC inventory analysis ranks lash SKUs into priority classes using a defined measure such as sales value, gross margin, usage value or on-hand value. Run nine steps: define scope, clean SKU data, select the ranking basis, set the period, calculate item contribution, sort cumulatively, assign classes, review exceptions and approve a control policy. Recalculate on a schedule instead of treating the first class as permanent.
ABC classification tells a buyer where closer control may create the most value. It does not prove that C items should be deleted or that every A item needs more stock. Combine the result with lash sell-through rate, service criticality, substitution, lead time, MOQ and quality history.
What ABC Analysis Does for Lash Inventory
ABC analysis creates differentiated attention. A small set of high-impact SKUs can receive tighter forecasting, more frequent counts and closer supplier confirmation, while lower-impact items can use proportionate controls.
Microsoft Learn's Item - ABC Analysis documentation describes configurable category thresholds and ranks items by their share of sales amount. Oracle's ABC Analysis documentation explains that items can be ranked using a user-selected valuation criterion and that the resulting classes can support different cycle-count frequencies.
Those sources show why the buyer must state the basis. A classification created from sales value may differ from one created from margin, quantity usage or current inventory investment. There is no single universal A/B/C list for every lash business.
The 9 Lash ABC Inventory Analysis Steps
- Define scope. Select the legal entity, channel, warehouse, location and active product range.
- Clean the SKU master. Separate curl, thickness, length, fan, color, row count and packaging version.
- Choose one ranking basis. Use sales value, margin, usage value, unit demand or on-hand value for a stated purpose.
- Set the time period. Use a period long enough to reduce short event noise while preserving current relevance.
- Calculate each SKU's contribution. Divide the selected measure for one SKU by the total measure for the scope.
- Sort and cumulate. Rank from highest to lowest and calculate cumulative contribution.
- Assign A, B and C classes. Apply approved thresholds that total 100%.
- Review operational exceptions. Flag launches, strategic complements, contracts, substitutions, quality holds and discontinuations.
- Approve control rules. Define review, count, forecast, safety-stock and purchasing requirements for each class.
| Class | Typical control intent | Buyer questions |
|---|---|---|
| A | Closest data, count and replenishment control | Is the forecast current and is stock usable? |
| B | Regular monitoring with defined exceptions | Is movement shifting toward A or C? |
| C | Proportionate investment and range review | Is the SKU strategic, slow, new or obsolete? |
| Exception | Manual review outside automatic rules | What evidence justifies different treatment? |
Choose the Ranking Basis Before Calculating
Begin with the business question. If the goal is protecting revenue, sales value may be appropriate. If the goal is reducing cash tied up, on-hand value or days in inventory may be more useful. If the goal is operational availability, usage quantity and substitution may matter more.
Do not blend several measures into an undocumented score. If a multi-factor method is needed, define each component, weight, data source and owner. Preserve the original single-measure class so the adjusted result can be audited.
Example: a buyer ranks 40 active tray SKUs by sales value for the last six comparable months. The top group producing the approved first cumulative share becomes A, the next band becomes B and the remainder becomes C. The exact thresholds are management choices, not a lash-industry standard.
Review a second view by inventory value. An A-sales SKU with excessive stock can still be a cash risk, while a C-sales SKU with negligible stock may not justify immediate action.
Clean Lash SKU and Version Data
ABC results are only as reliable as the item master. Do not combine a 0.05 C curl mixed tray, a 0.07 D curl single-length tray and a revised private-label package under one broad product name. Use the lash product specification sheet to preserve exact identity.
Separate active, superseded, held and discontinued versions. If two SKUs are commercially interchangeable, document the substitution rule instead of merging them silently. For private-label lines, confirm the active box, tray card, barcode and label through lash packaging artwork approval.
Reconcile returns, samples, internal use and inventory adjustments before ranking. A zero-sale item may be new, unavailable or incorrectly recorded rather than unimportant.
Set Class-Specific Controls
Classification is useful only when it changes a defined process. A practical policy can specify:
- forecast review frequency;
- physical count or reconciliation frequency;
- safety-stock approval level;
- supplier lead-time confirmation;
- reorder and exception authorization;
- inspection or retained-sample expectations; and
- range or aging review cadence.
A items may need tighter counts and more frequent forecast reviews, but they should not receive automatic overstock. Feed their demand evidence into lash safety stock and lash reorder review rather than replacing those controls.
C items may need lower investment, smaller MOQ negotiation or a range review, but some complete a popular map, satisfy a contract or protect a premium assortment. Record those exceptions and their owners.
Add Operational Criticality as a Separate Review
Revenue contribution does not capture every consequence. A low-value SKU can be critical when its absence prevents a full training kit, blocks a distributor assortment or removes an essential length from a mixed service range.
After the mathematical classification, review:
- customer and distributor commitments;
- approved substitutes and switching cost;
- stockout consequence and recovery time;
- production and packaging lead time;
- MOQ, case pack and freight constraints;
- open quality or supplier issues; and
- launch, seasonal or phase-out status.
Mark the original class and any approved operational override. Avoid manually moving items without a reason because that weakens the analysis.
Review Movement and Aging Together
ABC priority should be paired with velocity and age. An A item with falling sell-through may indicate changing demand or excess supply. A C item with old packaging can require action even if its financial value is small.
Use lash inventory aging to separate fresh and old receipts. Use the lash supplier performance scorecard when unstable delivery or quality affects the control level. Classification can direct attention, but it cannot solve poor supplier performance.
Create a simple review matrix:
- A + fast + fresh: protect availability and verify replenishment timing.
- A + slow or aging: investigate demand change, stock accuracy and overbuying.
- C + fast: check whether the ranking measure understates operational importance.
- C + aging: review range, promotion, transfer, package compatibility and disposition.
Govern Changes to the Classes
Assign an owner, calculation date, data period, source report, thresholds and approval date. Recalculate on a fixed cadence and after a major range, channel, price or packaging change.
Do not compare class movement unless scope and method are stable. A SKU can move from B to A because its sales improved, because another SKU declined, or because the period changed. Record the reason before adjusting policy.
LASHMAITRE buyers can share the approved A-priority SKU list, current specifications, target receipt dates and known exceptions. That gives the supplier a controlled reference for samples, packaging and replenishment discussions without exposing unsupported automatic purchasing rules.
Frequently Asked Questions
What is a lash ABC inventory analysis?
It is a method for ranking lash SKUs into priority classes using a stated measure and period. The classes guide differentiated inventory controls, but they do not replace judgment about service importance, quality, lead time or substitution.
Translate the priority classes into a documented lash cycle counting schedule so higher-risk SKUs receive more frequent physical checks without turning the classification itself into a count result.
What should A, B and C mean?
A normally receives the closest control, B receives regular monitoring and C receives proportionate investment and range review. The exact thresholds and processes should be approved by the business and documented.
Should ABC analysis use sales or profit?
It depends on the decision. Sales value can support revenue priority, margin can support profitability, usage can support operations and on-hand value can support cash control. Use one transparent basis per analysis.
Should every C-class lash SKU be discontinued?
No. A C item may be new, seasonal, contract-required, strategically complementary or inexpensive to hold. Review demand, substitution, age, margin, MOQ and service role before changing the assortment.
How often should classes be recalculated?
Use a fixed cadence that fits sales speed and planning cycles, and rerun after material range, channel, price, customer or packaging changes. Preserve the period and method so class movement can be explained.
Can ABC class set safety stock automatically?
It can inform the review frequency and approval policy, but it should not set a universal buffer by itself. Safety stock also depends on demand and lead-time variation, service consequence, MOQ, shelf life and cash.
Next Step
Review the age profile of each class through lash inventory aging. To align priority SKUs with wholesale availability, contact LASHMAITRE with the approved assortment, specifications, class rules and required dates.
Build a Lash SKU Priority List Your Supplier Can Use
Send LASHMAITRE your active assortment, priority classes, approved product versions and service requirements to align samples and wholesale replenishment around controlled SKUs.