A More Expensive Fragrance Oil Maintains Its Scent Better During Storage — Could It Be More Economical for a Business Holding Three Months of Inventory?

Why three months of stock changes the sum

If you pour on Monday and sell by Friday, storage stability hardly matters. If you hold three months of finished candles — for a festive build, a slow product, or simply to keep production steady — the oldest candles sit for up to three months before they reach a customer. Any oil that drifts during that time costs you candles.

So the question is not "which oil is better?" It is "how many of my oldest candles would the cheaper oil cost me, and is that more than the price gap?" You can answer that with your own figures.

The worked example

You make 600 candles a month, each 200 g at 8%: 184 g wax plus 16 g oil, in CSI 464, in a matte 200 ml jar, with an Eco C1 wick. Your current oil costs ₹3,200.00 per kg; an alternative you have tried costs ₹4,400.00 per kg. Both prices are your figures, used as examples. You have noticed that the dearer oil seems to hold its character better after storage.

Oil use: 600 × 16 g = 9,600 g, so 9.6 kg a month and 3 × 9.6 kg = 28.8 kg over three months of production.

The alternative costs ₹240.46 − ₹221.26 = ₹19.20 more per candle. Over three months of production: 1,800 × ₹19.20 = ₹34,560.00. That is the price of the extra stability. Figures exclude packaging, labour, shipping and GST.

What the cheaper oil might cost you in aged stock

Now the other side. With three months of stock sold first in, first out, the oldest third — one month's production, 600 candles — waits roughly three months. If your real-time test shows the cheaper oil passes at two months but some candles fail at three, the risk sits mainly in that oldest batch.

How many fail is a number only your test gives you. Three illustrations, each a labelled example:

Break-even is ₹34,560.00 ÷ ₹221.26 = 156.2 candles. Below about 156 failed candles in a three-month cycle, the cheaper oil costs less on materials.

When a lost candle is a lost sale

The material cost is the floor of what a failed candle costs. If demand is there and you cannot ship a candle because it failed, you lose the sale, not just the materials.

At a retail price of ₹699.00 (your figure), 60 failed candles mean 60 × ₹699.00 = ₹41,940.00 of sales you could not make. That is more than the ₹34,560.00 extra the dearer oil would have cost. The same 10% fail rate that left the cheaper oil ahead on materials puts it behind on lost sales.

Which view is right depends on your business. If you could simply pour replacements in time, count material cost. If the festive window closes and failed stock cannot be replaced, count the lost sale. Many makers in a festive build are in the second position.

The third option: hold less stock

There is a route that costs no extra oil. If the cheaper oil passes your test at two months, plan a two-month stock instead of three. Your oldest candles then sit two months, inside the tested window, and the aged losses may disappear.

The trade-offs are real: more frequent production runs, tighter planning before festivals, and more frequent oil orders. But they are often cheaper than ₹34,560.00, and they keep cash out of stock. Holding less also means buying oil in smaller lots: at 9.6 kg a month, a two-month reorder is about 19.2 kg rather than 28.8 kg, bought as 1 kg packs at the listed price or quoted on WhatsApp — no bulk discount is published, so there is no lost discount to weigh.

How to choose

Do not forget the cash on the shelf

Three months of finished candles is money sitting on shelves. In the example, the oil alone in three months' production is 28.8 kg. With your current oil that is 28.8 × ₹3,200.00 = ₹92,160.00; with the alternative, 28.8 × ₹4,400.00 = ₹126,720.00. The dearer oil ties up more cash in exactly the stock you are worried about.

If your money has a cost — a loan, an overdraft, or simply another use for it — put a monthly rate on it. Use your own; as a labelled example only, 1.5% a month on the extra ₹34,560.00 held for an average of about one and a half months is roughly ₹777.60. Small next to the aged-loss figures, but it belongs in the sum, and it grows with every extra month of stock.

Make the three-month test fair

Store both oils' candles side by side, lidded, on the same shelf, with a min/max thermometer beside them. If one set sits nearer a window or under a roof, the result measures the shelf, not the oil. Pour an unscented control from the same wax and keep it with them, so a change in the wax itself is not blamed on either fragrance. Start the test early enough that the three-month check falls before you must commit to the next production run; a result that arrives after the oil order is placed decides nothing. Smell coded candles with a second person and a fresh reference of each oil poured just before the check.

Keep the oil itself in good order

Three months of finished candles often means oil stock too. CSI's oil pages publish no shelf life or storage temperature; ask on WhatsApp (+91 7397976926) for any guidance for the oil and lot, in writing. Store packs sealed, cool, dark and upright, decant part-used stock into smaller well-sealed containers, and label lot and dates. The 60-month shelf life stated for CSI 464 wax says nothing about your fragrance.

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