Should My Candle Business Use First-Expired-First-Out Inventory Management When Different Fragrances Have Different Validated Shelf Lives?

FIFO and FEFO answer two different questions

FIFO, first in first out, ships whatever you made earliest. It is a perfectly good rule when every product in the store room has the same tested window. Your collection probably does not. If your own real-time testing shows a lemon candle holding its approved character for a shorter period than a vanilla candle, then a lemon batch poured last week can be nearer its limit than a vanilla batch poured two months ago. FIFO would send the vanilla first and leave the lemon to drift.

FEFO, first expired first out, ships the batch whose internal release-by date arrives soonest. So the short answer is yes: once your validated windows differ by fragrance, or by jar and lid combination, FEFO should be the default, and FIFO becomes the tie-breaker between batches that share the same date. The catch is that FEFO is only as honest as the dates you feed it. A wrong date applied with great discipline still ships the wrong candle.

Before setting anything up, be clear about what kind of business problem FEFO solves. Customers rarely accept a vanilla candle in place of the lemon they ordered, so FEFO is not mainly a picking rule across different fragrances. It earns its keep in four places: batches of the same fragrance that carry different windows, mixed gift sets and hampers, deciding which stock to promote, and deciding what to pour next.

What the date on each batch should actually mean

The date you work to is an internal release-by date, not a promise printed for customers. Build it from three parts, all of them yours: release-by = manufacture date + your tested window − your post-dispatch allowance. The tested window is the longest period your own retained candles, stored in your normal conditions, still matched your approved standard. The post-dispatch allowance covers courier transit, any retail holding and a reasonable period before a customer lights the candle.

Nothing in that formula comes from a supplier's catalogue. CSI fragrance-oil pages publish no shelf life, no storage temperature and no ageing data for any oil, so ask on WhatsApp (+91 7397976926) for the IFRA certificate, the MSDS and any storage or shelf-life guidance for the specific oil and lot, and keep the reply in writing. CSI 464 and CSI 468 do state a 60-month shelf life in cool, dry storage, but that is a statement about the wax in its bag. It tells you nothing about how a fragrance behaves inside a finished candle, so it can never become a candle's window.

A worked example: four batches, two orders

Take a small brand with three formulas in CSI 464 and lidded jars. The windows below are example figures standing in for the maker's own test results: Citrus Lemon passed at 90 days, Woody Oud at 150 days and Dark Vanilla at 180 days. The maker allows 30 days after dispatch for transit and the customer, also an example figure. That leaves a shippable window of 90 − 30 = 60 days for lemon, 150 − 30 = 120 days for oud and 180 − 30 = 150 days for vanilla.

Read the two rank columns side by side. FIFO treats the July vanilla as the most urgent stock in the room. FEFO says it has seven weeks more headroom than either lemon batch. If this maker is assembling a festive hamper with one candle of each formula, FEFO tells them to build hampers from L-0901 first and to stop using lemon from that batch once 31 October passes. If they are planning a promotion, the lemon is the stock to push, not the vanilla.

Within lemon itself, FIFO and FEFO agree, because both batches share one window. That is the normal situation for most single-fragrance orders, and it is why FEFO rarely feels dramatic day to day. Its value shows up at the edges, where a rule of thumb would quietly let your shortest-lived formula age on the shelf.

Where FEFO changes real decisions

Same fragrance, different windows

Suppose you sell Lavender in a lidded jar and an open votive. If your testing showed the open format losing cold throw sooner, the two formats carry different windows even though the oil is identical. FEFO handles that automatically, provided each format is tested and labelled as its own formula. The same applies after an oil lot change that you have re-qualified for a shorter period than the previous lot.

Gift sets and mixed hampers

A hamper is only as good as its weakest candle. Set the hamper's release-by to the earliest date among its contents, and assemble hampers from batches with plenty of headroom rather than parking aged stock inside a pretty box.

What to pour next

FEFO thinking applies before candles exist. A formula with a short window should be poured in smaller, more frequent runs, closer to when it will sell. A long-window formula can be poured earlier to free production time near a festival. That is a scheduling decision, and it starts from the same window figures.

What to buy next

Your shortest window also caps how much oil it makes sense to hold for that formula. Buying a large quantity of an oil whose candles you can only ship within a short window simply moves the ageing risk from the shelf to the oil drum.

Setting up FEFO in a small store room

What it costs and what to buy

FEFO costs labels, a shelf plan and discipline. The real expense is the retained candles that make the windows honest. Using the reference build from our costing convention, a 200 g candle in CSI 464 at 8% with Lavender in a matte 200 ml jar with an Eco C1 wick costs ₹253.60 in materials. Keeping two retained candles from a batch costs 2 × ₹253.60 = ₹507.20, before your own packaging, labels and labour. Against a batch you are about to ship to customers, that is cheap insurance.

On oil, the honest advice runs against our own sales: size each purchase to your shortest-window formula's real usage, not to the cheapest per-gram pack. The 1 kg pack is the lowest per-gram price on every CSI oil, but no pack above 1 kg is listed, and larger quantities are simply multiple 1 kg packs or a WhatsApp quote. Smaller, more frequent orders can beat one large order when the window is short. And whatever your dates say internally, do not tell customers a fragrance will stay unchanged; tell them how to store and enjoy the candle, and let your testing protect them quietly.

Where this page fits

CSI already has guides that cover parts of this question. This page answers one fragrance-ageing decision; these cover the neighbouring questions:

Three things to buy for this decision

Frequently asked questions