I’m Switching Wick Suppliers to Reduce Cost by ₹1 per Candle — How Do I Determine Whether the Savings Justify the Cost of Complete Revalidation?

Framing the decision: a saving you earn slowly, a cost you pay at once

Saving ₹1 on every candle sounds modest, and at small volumes it is. At larger volumes it adds up quickly. The catch is that a new wick supplier is a new component in every product that uses it, and a new component needs qualifying before customer candles are made with it. That qualification has a cost in materials and time, and there is a further risk that it misses something and a production run fails. The question is not "is ₹1 worth saving?" It is: how many candles must you make before the saving has paid for the revalidation, and does that happen soon enough to matter?

The ₹1 per candle in this page's example is your figure, not a CSI price. The other figures below come from CSI's live price list and are used only to show the method. Replace them with your own jar, wax and fragrance costs and your own monthly volume, and the same calculation gives your answer.

What complete revalidation actually costs

Revalidation for a wick change is not one test candle. At minimum it is a paired comparison, old wick against new, burned to the end in each product that will use the new wick. Suppose you make five products and choose, as a suggested starting point, three candles per product: two with the new wick and one control with your current wick. That is 15 test candles.

To cost them, take a representative 200 g candle: Premium Coconut Soy Wax CSI 468 bought at 10 kg for ₹6,370.00, Bergamot Amber at ₹5,437.00 per kg, the CSI 200 ml matte jar at ₹708.00 for ten, and your current wick, here an Eco Candle Wick, Thin (C1), at ₹5.90. At 8% of total candle weight the candle holds 16 g of oil and 184 g of wax; treat the 200 g as illustrative and use your own weighed fill.

Fifteen test candles cost 15 × ₹280.90 = ₹4,213.50 in materials. On top of that sits time: pouring, curing and attending every burn session to the end, plus recording. Add your own hours and your own hourly cost; they often exceed the materials. For the break-even below, material cost is used alone, so treat the result as the best case.

Costs that do not appear on the test bench

A supplier switch carries a few costs that are easy to leave out of the sum. Formula sheets and batch records have to be updated so every product names the new wick. Whoever pours needs to know which wick goes where, especially during the overlap when both wicks sit on the shelf. You will hold two wick stocks for a while, which ties up cash and shelf space and creates a mix-up risk that needs clear labels. And goods-in checks for the new supplier start from scratch, with tighter sampling until a track record builds. None of these is large on its own, but together they push the true break-even beyond the material-only figure, which is why that figure is best read as a minimum.

The break-even: how many candles until ₹1 pays back

With a saving of ₹1 per candle, break-even on materials alone is ₹4,213.50 ÷ ₹1 = 4,213.5, so 4,214 candles rounded up. The time to reach that depends entirely on your volume.

At 5,000 candles a month, the switch pays for its testing in the first month and then saves 5,000 × ₹1 = ₹5,000 every month after that. At 250 candles a month, you wait well over a year just to recover materials, before counting your time. At that volume, if the new supplier's wick changes again within a year, you pay for revalidation twice and never see a net saving.

Put the ₹1 in context too. If your current wick costs ₹5.90, a ₹1 saving means a new wick at ₹5.90 − ₹1 = ₹4.90, about 17% cheaper per wick (₹1 ÷ ₹5.90). A saving that large on a component is worth asking about: is it the same construction, or a different product that happens to fit the same jars?

The risk side: what one failed run costs

Break-even assumes the revalidation works and nothing goes wrong afterwards. The larger financial risk is a production run made with a new wick that behaves differently in some product or some lot, and nobody noticing until the candles are made or sold.

Take a single run of 200 of the candles above. The material alone is 200 × ₹280.90 = ₹56,180.00. To recover that loss from ₹1 savings, you would need to make 56,180 more candles. At 1,000 candles a month, that is more than four and a half years of savings wiped out by one bad run. This is why careful revalidation is not an obstacle to saving money; it is the thing that makes the saving real.

These bands are a starting point for your own judgement, not rules. Adjust them for how much you value your testing time and how consistent the new supplier has been across deliveries.

Before you switch: questions for the new supplier and your own records

An honest note, since CSI sells wicks too: if your current wick is ours and a cheaper one passes your full revalidation and stays consistent, switching is a sound business decision. If the cheaper wick fails, the saving was never real. Either way, the decision should come from your burn records and this arithmetic, not from the headline price. For questions about CSI wicks, WhatsApp +91 7397976926 and file the reply with your comparison.

Where this page fits

CSI already has guides that cover parts of this question. This page covers the goods-in check for the question above; these go deeper on the rest:

Three things to buy for this job

Frequently asked questions