I Want to Reduce the Number of Wick SKUs in My Candle Business — How Do I Standardise Without Forcing Every Fragrance into an Unsuitable Wick?

Why bigger wick packs won't cut your costs

Many makers start a SKU clean-up expecting a bulk discount at the end of it: fewer wick types, bigger orders, lower unit price. On CSI's three main wick listings that discount does not exist. Check the per-wick column below. It is the strongest reason to do this audit on stock and quality grounds and not on price.

So what does a leaner shelf actually save? Four things, none of them on the invoice line: cash held in slow stock (a pack of a wick you use 25 of a month sits for months), reorder lines (each SKU is one more thing to run out of before Diwali), mix-ups (C1 and C2 are both pre-tabbed paper-and-cotton wicks; in a busy pour they are easy to swap, so every extra bin adds risk) and spec-sheet length (fewer builds for a new helper to learn). Per-candle savings come only from moving a build to a cheaper wick type, and as the money section shows, one of the obvious moves costs more.

Step 1: an inventory of builds, not of wicks

Start from what you pour, not from what is on the shelf. For each approved build write the jar (with its measured inside diameter), wax, oil, load, wick build and the candles you make in a normal month. Multiply by wicks per candle and total by SKU. Our worked example is a small brand using Luxury Soy Wax CSI 464 at 8% in two CSI jars: the Clear Glass Jar with Golden Lid (150 gram) (page: outer diameter 7 cm, base 6.5 cm, so 6.3 cm inside at the rim on a 0.35 cm wall, our assumption) and the Apothecary Glass Candle Jar with Dome Lid 500 gm (page: outer rim and base about 10 cm; 9.3 cm inside on the same assumption). Both pages state hot-pour safety up to 85°C; CSI 464's page says "Pour Temperature 80°C – 90°C", so pour at 80–85°C, the lower limit governing.

Totalled by SKU: C2 470 wicks a month (58.8%), C1 250 (31.2%), Cotton Braided 55 (6.9%) and wooden 25 (3.1%). The top two carry 90.0% of everything you light. Monthly wick spend is ₹7,751.80: ₹4,436.80 on C2, ₹1,475.00 on C1, ₹660.00 on Cotton Braided and ₹1,180.00 on wooden wicks. The wooden wick carries 3.1% of the wicks but takes 15.2% of the wick bill. That one line is worth a look; it is not yet a decision.

Mark the tail with a threshold you set before looking at the numbers. Ours is "under about 10% of monthly wicks", a judgement call, not an industry rule. Here it flags Cotton Braided and the wooden wick, 10.0% of wicks between them. A seasonal SKU that is idle most of the year but carries your Diwali bestseller is not tail; note season beside volume.

Step 2: name each tail build's nearest standard

Each tail build needs one named alternative: the standard build it would move to. Three rules keep that honest.

Same jar. A build's wick was chosen for that inside diameter. Woody Oud runs on C2 in the 7 cm jar and on Cotton Braided in the 10 cm jar in our example, and both can be right. Moving the 10 cm oud to "the oud wick" from the 7 cm jar is a jar change wearing a SKU label.

One step. In CSI terms the rungs are C1 → C2 → Cotton Braided, plus multi-wick builds of C1 or C2. A neighbour sits one step from the current build in heat terms. The wooden wick has no rung of its own: it is one listing with one width, so its neighbour is whichever standard you would bracket against it, here C2 in the 7 cm jar. In the 10 cm jar, Cotton Braided's neighbouring standard is the 2 × C2 build already approved there for Lavender and Dark Vanilla.

Direction matters. Moving a heavy oil down a step risks a small pool and carbon; moving a light oil up risks a big flame, a fast pool and heat late in the jar. Heavier, resinous or vanillin-rich oils commonly need more wick and lighter florals often burn more easily (tendencies, not CSI data), so the risky consolidation is the one that lifts florals onto the heavy-oil wick to empty a bin. That is exactly the forcing your question worries about; the audit simply does not propose it.

If a tail build has no standard neighbour within one step, it cannot be consolidated by this audit. Keep the SKU, or treat the product itself as the tail: retiring a slow fragrance can remove a wick SKU without forcing anything. The question of which oils share a wick as a house rule, and how a new oil earns its place in a group, is the behaviour-group post; this page only empties bins that data says can be emptied.

Step 3: the 2 + 1 consolidation trial

The question is narrower than a bracket: not "which wick is best?" but "is the standard at least as good as the SKU it replaces, in this jar, with this oil, all the way down?". So the trial pairs each build with its own control and changes one thing only, the wick build.

Per candle: 12 g oil + 138 g wax in the 7 cm jar; 36 g oil + 414 g wax in the 10 cm jar (450 g is our worked-example fill under the listing's "~500 g"; weigh your own fill line). Costs exclude labour, freight, packaging and GST, and assume you already hold the oils and wax for production. Starting from nothing, Sage and Cedarwood needs 108 g, which a 100 g bottle does not cover; a 100 g plus a 50 g bottle cost ₹1,050.20. Note too that this oil's 1 kg (₹6.87 a gram) costs more per gram than its 500 g (₹5.17 a gram), a listing fact worth knowing before you restock.

What consolidating saves, and where it costs more

Because pack size changes nothing per wick on C1, C2 and Cotton Braided, the money in a consolidation comes from swapping one wick type for another. In the worked example the three possible moves point in different directions.

The wooden move pays: a passing T1 recovers its ₹775.99 of materials in about 0.8 months of the ₹944.00 monthly saving, and releases the ₹2,360.00 of a 50-pack sitting on the shelf for 2 months, replaced by ₹236.00 a month of C2 drawn from stock you hold anyway. The Cotton Braided move costs money every month and doubles the wick-setting step on 55 candles. It is worth doing only if one fewer SKU is worth more to you than ₹378.40 a month, which for many small makers it is not.

The audit can also surface a cheaper build that removes no SKU at all. In the 10 cm jar, Lavender and Dark Vanilla burn on two C2; if a single Cotton Braided passed for them instead, those 70 candles would save ₹481.60 a month and Cotton Braided would become a 10 cm standard. That is a separate bracket (a wick-count change, with its own full-life test), not part of this audit, but it is the kind of finding an honest build list produces.

Consolidate only on a pass

Write down every SKU the audit keeps and the reason, for example: "Cotton Braided kept: T2 and T3 passed on 2 × C2, but the move costs ₹378.40 a month". Next year's audit starts from that note, not from memory. If the wick behind a standard ever changes lot or supplier, the comparison method is the new-carton wick check; a new supplier needs a fuller comparison record.

Two related decisions are deliberately left to their own posts: when a wick earns a 1,000-wick order (the purchase-gate post) and how far a single container cuts the whole matrix (the one-jar post). Choosing jars with similar inside diameters so that one wick can serve several is the similar-diameters post, and how close two diameters must be is the one-wick-across-jars post.

Buying for a leaner wick shelf

Five items, chosen on page wording, price and stock on 29 September 2026. CSI publishes no wick-performance data, so nothing here is ranked on burn results. Oil yields are counted at 12 g per 150 g candle and 36 g per 450 g candle.

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