I Accidentally Made a Much Larger Fragrance Blend Than I Need — How Should I Store the Remaining Blend So I Can Reproduce the Same Candle Later?

What the surplus is actually worth

Start with the cost per gram, because a blend has no listed price and you will need this number twice — once to decide whether to keep it, and once to cost the candles you eventually pour from it. Weighted average, nothing cleverer: multiply each component's grams by what you actually paid per gram, add them, divide by the total.

Now convert the surplus into the only unit that helps you decide. At 8% of wax weight, 600 g of blend needs 600 ÷ 0.08 = 7,500 g of wax, which makes an 8,100 g batch — 40 × 200 g candles with 100 g over. The oil in each of those candles is ₹92.09, already paid. Add wax at ₹599/kg for Luxury Soy Wax Chunks and each candle carries ₹110.93 of wax, before vessel and wick.

The Sandalwood and Vanilla Bean pages both state up to 10% for soy wax and up to 6% for paraffin, and both state a cure of 48–72 hours for soy. So all three rows above sit inside stated numbers — but they are three different candles, and only one of them is the candle you tested. That is the first reason the record has to include the load and its convention, not just the ratio.

The nine fields that make it repeatable

This is the part that actually answers the question. Reproducing the candle later is a records problem, and the record has exactly nine fields. Anything less and you will be guessing at some point in the reorder; anything more is nice but not load-bearing.

Where to put it — and what CSI does not state

Now the container, with an important caveat first. None of CSI's 107 fragrance-oil product pages states a shelf life, an expiry date, a storage temperature, or any instruction to keep oil in a cool, dark or airtight place. Two pages mention an SDS at all. So there is no published specification to quote, and this guide will not invent one. What follows is ordinary workshop practice — the same care you would give any concentrated material you paid ₹6.22 a gram for — and it is offered as practice, not as a product claim.

Three practical points, all of them about handling rather than chemistry. First, keep it in glass with a closure you can actually close, and keep the vessel full-ish; a mostly empty bottle is mostly air. Second, keep it off the pour bench, because a bottle that lives next to a melter gets picked up, decanted, topped up and eventually mixed with something else — and every one of those events breaks the ratio you recorded. Third, decant into the size you will use: one bottle you open forty times is forty chances to lose track, while four smaller bottles you open once each are four clean draws.

CSI does not list a dedicated fragrance-oil storage bottle, so be clear-eyed about what is actually available. The listed sealed glass vessels are small: Attar Bottles at 3 ml, 6 ml and 12 ml in packs of ten, 10 ml perfume bottles at ₹400 for ten, and Gold Reed Diffuser Bottles in 50 ml and 120 ml packs of ten. For the bulk of a 600 g surplus, the most sensible vessel is usually the pack the oil arrived in — if you have an empty 500 gm bottle from the same oil, it is the right size and it already closes properly.

Reusing the blend: same formula, new test

Here is the distinction that keeps a records habit honest. Your nine fields let you reproduce a formula — the same two oils, the same ratio, the same load, the same wax and the same process numbers. They do not reproduce a tested candle, because a tested candle is a formula plus a specific vessel, a specific wick and a specific burn result. Change any of those and you are back to needing evidence.

The last row is the one that needs care. Because nothing is published about shelf life, the honest position is agnostic: do not claim the blend is fine after a year, and do not claim it has gone off. Check it, cheaply, against something. That is the entire argument for the ₹62.16 reference sample — it converts an unanswerable question into a two-minute comparison. If the working bottle and the reference smell the same, pour a test candle. If they do not, you have learned something for ₹62.16 instead of for 7.5 kg of wax.

Hold it as oil, or convert it now

A surplus blend can be held in two forms, and the choice is a business decision rather than a technical one. Hold it as oil and it is flexible — you can pour it into any format, at any load inside the stated range, whenever you like. Hold it as finished candles and it is inflexible but proven, cured and countable. The threshold between them is your own production cycle.

One more number for the middle row. Converting the whole surplus now costs 7.5 kg of wax at ₹4,492.50, which turns ₹3,729.72 of oil into ₹8,222.22 of material in finished form — before you add 40 vessels, 40 wicks and any packaging. That is a real cash decision, not a tidying decision — which is why the honest version is often "pour half". Twenty candles proves the formula and clears half the bottle; the other 300 g stays flexible with a record you can trust.

What to buy for the record and the vessel

Three purchases cover the whole workflow, and two of them are one-off. Each card shows every listed size with the per-piece or per-100 g maths.

Buying to the requirement, not to the pack

The surplus was not created by storage. It was created at the checkout, when the requirement was 400 g and the basket was 1,000 g. CSI lists five sizes on most oils — 15 gm, 50 gm, 100 gm, 500 gm and 1 kg — which is fine granularity if you shop with the arithmetic in front of you.

Work backwards from the batch. Five kilos of wax at 8% of wax weight needs 400 g of blend. At 60:40 that is 240 g Sandalwood and 160 g Vanilla Bean. Now buy to that.

The smaller basket costs more per gram — 100 gm of Sandalwood is ₹5,026.80 per kilo, the same as the 500 gm and 1 kg packs, but the 50 gm bottle is ₹5,428 per kilo — and it still comes out ₹3,359.44 cheaper in cash, because you are not paying for 550 g you had no plan for. Per-gram thinking is right when you know you will use the whole pack. When you do not, cash out of the door is the number that matters.

Second prevention habit, and it takes thirty seconds: blend into a weighed container, not into the melter. Tare the vessel, add the first oil to its target weight, add the second to its target weight, read the total, write it down. Blending directly into hot wax means the only record of what you added is your memory of the scale readings, and the only way to correct an over-dose is the wax-and-oil arithmetic in the sibling guides on correcting a 100 g dose back to 8% and recalculating a 5 kg batch at the wrong percentage.

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