My Candle Still Looks Fine After a Year but the Fragrance Character Has Changed — How Do I Decide Whether It Has Exceeded Its Practical Shelf Life?
शेयर करना
Is there an expiry date I can look up? No. Across 107 CSI fragrance-oil pages, zero state a shelf life, an expiry, a best-before date or any storage instruction. Nobody can hand you the number, which is why the answer is a rule of your own plus your own held samples.
What makes the decision decidable? A fresh reference pour. After a year you cannot remember what the recipe smelled like new. Pour three candles from the same recipe today and read the aged unit, a cool-stored retained unit and the fresh unit as a blind three-way. Three candles cost ₹654.84.
What does "practical shelf life" mean, then? The point at which a unit stops meeting an acceptance rule you wrote before you looked — on character, appearance, weight and burn. It is a commercial tolerance, not a technical constant, and it will differ between a gifting line in a box and a candle a customer smells on a shelf.
The verdict on a year-old batch
Take the dispatch decision first, because it is the one with a date attached. A year-old candle that looks right is not automatically fine, but it is not automatically suspect either. The gates are physical and they are the same five as everywhere in this series: a crack anywhere in the glass, a wick that has drifted until it touches the wall, a wick that will not sustain a flame or that clogs and drowns, free oil pooled deep enough to sit around the wick base, and a jar that becomes uncomfortably hot to hold during a test burn. Any of those and the unit does not ship, and you widen the sample.
A change in fragrance character does not appear on that list, and it should not. It is not a safety question and it is not a quality defect in the sense that a cracked jar is. It is a question about whether the product you are about to send is the product you described when you sold it — and that is answered by your own tolerance, stated to your own customers, not by any figure a supplier can give you.
What must not happen is the third path: shipping the batch while privately hoping nobody notices, and leaving no record either way. That is how a line accumulates complaints with no data behind them, and how next year's decision starts from exactly the same standing start as this one.
"Character changed" is not "weaker"
The two complaints get run together and they lead to different actions. "Weaker" is a statement about intensity. "Different character" is a statement about balance — the proportions between what you notice first and what stays. Getting the description right is most of the diagnosis, and the fastest way to get it right is to borrow the structure the product page already uses.
Eighty-eight of CSI's 107 fragrance-oil pages state a full top / heart / base note pyramid, and a further 14 state a scent profile without the three tiers. That published structure is a ready-made score sheet. Instead of writing "smells different", write one line per tier for each candle in the comparison: what the opening does, what the middle does, what is left after ten minutes. Two candles described that way can be compared by somebody who was not in the room; two candles described as "different" cannot.
It is also the only honest way to talk about why families age unlike each other. Light citrus top notes are, as a class, made of more volatile material than heavy woody and resinous bases — that is ordinary, uncontroversial material behaviour, and it means a blend can read as having shifted toward its base without anything having "gone off". What nobody can give you is a rate. There is no figure for how much of a top note goes in six months, no curve, and no conversion from a warm test to a number of ambient months. So the tier-by-tier description is not a poor substitute for a measurement; in the absence of published data it is the measurement.
| Candidate | What you would expect alongside | The observation that separates it | Action if it is this |
|---|---|---|---|
| Balance has shifted toward the base | The opening reads quieter; what remains after ten minutes reads unchanged or more prominent | Tier-by-tier description of aged, retained and fresh units side by side | A formulation choice for long-hold lines, not a defect. Consider a different oil or a shorter hold |
| Overall intensity is lower | Every tier reads quieter, including the base; the fresh unit is clearly stronger on all three | Blind three-way, then burn all three and score throw at 30 and 120 minutes | Test loads and storage before swapping the oil; check the wick and melt pool first |
| Nothing changed; your reference moved | The retained unit and the fresh unit read the same as the aged one once all three are at one temperature | Someone else labels the three and holds the key | Update the rule, not the recipe. Keep the retain habit |
| Cure was still finishing when you formed your memory | The fresh unit at two weeks reads unlike the fresh unit at eight weeks | Hold one fresh reference candle back and re-read it after a further cure interval | Your pour-day memory was of an unfinished candle. Fix the baseline, not the batch |
| Something physical happened and scent is the symptom | Measurable weight loss, a film on the glass, droplets, a softened or slumped top | Weigh against the pour-day log and inspect against the pour-day photograph | Treat as a stability problem: test loads and wax, and inspect the whole batch by storage position |
Writing the acceptance specification
This is the part that makes "practical shelf life" a real thing rather than a phrase. An acceptance specification is four rows on one page, written before the samples are opened, saying what each field has to do for the unit to be sellable as described. The thresholds below are illustrative — they are a method, not a standard, and yours should reflect your own customers and how your product is sold.
| Field | What you record | What you compare against | Example pass condition (yours to set) |
|---|---|---|---|
| Character | One line per note tier — opening, middle, after ten minutes — for each unit, closed and open | The cool-stored retained unit and the fresh reference pour, blind, at one temperature | Two independent readers place the aged unit with the fresh unit rather than apart from it, or the difference is one you would print on the label |
| Appearance | Surface, top texture, colour, the glass wall, droplets, any frosting or wet spots, photographed in the same light | The pour-day photograph of the same face of the same unit | No change you would not show a customer; nothing that has appeared on the glass wall |
| Weight | Filled weight to the nearest gram at each checkpoint | The pour-day weight log for that numbered unit | Within the tolerance you set when you started logging — and any loss is investigated, not averaged away |
| Burn | Time to a full melt pool, flame behaviour, soot or mushrooming, throw at 30 and 120 minutes, jar temperature by hand | The original burn score sheet for that recipe, and a fresh reference candle burned alongside | Melt pool and flame behave as recorded originally; no clogging, no soot increase, jar not uncomfortably hot |
Two properties make this rule useful. It is written first, so you cannot move the line to suit a result you do not like. And it contains no claim about safety: a pass means the unit meets your description, not that the stock is certified fit — that judgement remains yours, informed by your inspection, and no supplier can make it for you.
The three-way blind with a fresh reference pour
Here is the method in full. It costs three candles plus whatever you have retained, and it is the difference between a decision you can defend to a buyer and an argument about whose nose is better.
The five commercial outcomes, costed
Once the sheet is filled in, the question becomes money. Here are the five things a brand actually does with a batch like this, priced on the 300-unit example: 300 × 200 g candles at ₹218.28 of materials each, ₹65,484.24 in total. The rupee figures are materials only — your labour, packaging, marketing and any labelling reprint sit on top, and they usually decide the answer.
| Outcome | When the sheet points here | Materials consequence | What it costs you beyond materials |
|---|---|---|---|
| Ship as described | All four fields pass | ₹0 additional. The ₹65,484.24 stays productive | Nothing, provided the description still matches |
| Ship with an updated description | Character differs within a difference you would print | ₹0 additional in materials | Relabelling or listing copy, and the discipline to actually change it |
| Reprice and move quickly | Character or appearance differs enough that you would not sell it at full price | ₹0 additional; recovery is whatever the reduced price returns against ₹218.28 a unit | Margin, and the risk of teaching customers to wait for the reduction |
| Rework the usable part | Appearance fails but wax and glass are sound and the fragrance still reads acceptably | New wicks at ₹5.90 each — ₹1,770 across 300 — plus any wax you top up at ₹0.599/g | Labour, which on 300 units is usually the largest line, and a fresh cure before dispatch |
| Retire the batch and remake | A physical gate fails across positions, or character fails in a way you cannot describe honestly | Write off ₹65,484.24 of materials and spend it again: another ₹65,484.24 | Everything. This is the outcome the retained samples exist to make rare |
Look at the ratio in the diagram again. The retained samples are 4.0% of the batch and the fresh reference pour is 1.0%. Five percent of a batch, set aside, is what converts the other ninety-five from a judgement call into a documented decision — and it is the cheapest insurance in a candle business, because the alternative outcome in the last row of that table is the full ₹65,484.24 twice over.
What to buy to run the comparison
Three purchases cover the reference pour and the retained-sample habit. Each card shows every listed pack with the per-unit rate, so you can see where a pack step genuinely changes the price and where it does not.
| Size | Price | Per 100g | 200g candles @ 8% |
|---|---|---|---|
| 15 gm | ₹93.22 | ₹621.47 | ≈0 |
| 50 gm | ₹271.40 | ₹542.80 | ≈3 |
| 100 gm | ₹453.12 | ₹453.12 | ≈6 |
| 500 gm | ₹2,265.60 | ₹453.12 | ≈31 |
| 1 kg | ₹4,531.20 | ₹453.12 | ≈62 |
| Size | Price | Per kg | 200g candles @ 8% |
|---|---|---|---|
| 500 g | ₹299 | ₹598 | ≈2 |
| 1 kg | ₹599 | ₹599 | ≈5 |
| 5 kg | ₹2,995 | ₹599 | ≈27 |
| 10 kg | ₹5,999 | ₹599.90 | ≈54 |
| Size | Price | Per piece |
|---|---|---|
| 5 Pcs | ₹200.60 | ₹40.12 |
| 50 Pcs | ₹1,475 | ₹29.50 |
| 100 Pcs | ₹2,950 | ₹29.50 |
What changes in the next formula
A year-old batch that read differently should change three things, and only one of them is about the fragrance.
Match the hold to the product, not the product to the hold. If a line reliably sells within weeks, it can be formulated for freshness and none of this matters much. If a line sits for nine or twelve months — a slow seller, a seasonal SKU, a retailer's shelf — then the recipe should be chosen on how it reads after that hold, which means qualifying it on aged samples before you scale it. That is a purchasing decision made months earlier than most brands make it.
Make the retain a line in the costing, not an afterthought. Twelve units out of 300 is ₹2,619.36 — 4% of materials. Put it in the batch cost the way you put in wax loss. A maker who runs four long-hold lines is holding roughly ₹10,477.44 of evidence across them, which is a sixth of one batch, and it is the only reason next year's decision starts with data.
Log pour weights and take pour-day photographs, every batch, no exceptions. Both of the fields in the acceptance specification that are genuinely objective — weight and appearance — depend on a record made a year earlier. They cost seconds per unit at the pour bench and they cannot be reconstructed afterwards. If you take one thing from this guide into next week, take the weight column.
CANDLEMAKINGSUPPLIESINDIA supplies raw materials, not finished candles. The convenient thing for a supplier to say about a year-old batch is that the oil has expired and you should buy more. What this guide says instead is that there is no expiry to point at, that the most likely honest outcome is a description or a price decision rather than a remake, and that five percent of a batch held back as samples is what makes that judgement possible. A maker who retires a good batch buys wax from us once; a maker who can read their own stock keeps ordering.
Every price, pack size and specification here comes from live CSI stock in September 2026 and links to the product page, where current pricing always takes precedence. Stated specifications are quoted only where the page states them: Woody Oud's 6–10% candle load and 48–72 hour cure; Luxury Soy Wax Chunks' 8–13% load with 10% recommended, 80–90°C add, 70–80°C pour and 48-hour-to-two-week cure; the 200 ml Salsa jar's stated capacity, which is a volume and not a fill weight. None of CSI's 107 fragrance-oil pages states a shelf life, an expiry date, a best-before date or a storage instruction, and this guide publishes no ageing rate, no loss percentage, no decay curve and no accelerated-to-real-time conversion, because no such figure exists on those pages and accelerated storage does not map cleanly onto real time.
For bulk pricing above the listed packs, GST invoicing, MSDS or IFRA documentation on a specific oil, message us on WhatsApp at +91 7397976926. We will describe what a page states; we will not certify a shelf life we have not published.
Frequently asked questions
- Establishing a realistic fragrance shelf life for finished candles
- A slow seller that sits nine months: formulate it differently?
- Does excellent fresh hot throw survive six or twelve months?
- How cure time changes the smell of different fragrance families
- How to test hot throw before launching a candle fragrance
- How much fragrance oil does a candle business need?
Customer reviews: The six reviews at the top of this page are genuine, published Judge.me reviews left by CSI customers on their product pages. Names, star ratings, dates and products are as recorded by Judge.me; wording is unedited.
Figures verified September 2026: Woody Oud Fragrance Oil 15 gm ₹93.22, 50 gm ₹271.40, 100 gm ₹453.12, 500 gm ₹2,265.60, 1 kg ₹4,531.20. Luxury Soy Wax Chunks 500 g ₹299, 1 kg ₹599, 5 kg ₹2,995, 10 kg ₹5,999. 200ml Salsa Glass Jar with 63mm Lug Cap 5 Pcs ₹200.60, 50 Pcs ₹1,475, 100 Pcs ₹2,950. Eco Candle Wicks Thin (C1) 10 ₹59, 100 ₹590, 500 ₹2,950 — ₹5.90 each at every listed pack. Arithmetic: 200 g candle at 8% = 184 g wax + 16 g oil; wax 184 × ₹0.5999 (₹5,999 ÷ 10,000 g) = ₹110.38; oil 16 × ₹4.5312 (₹4,531.20 ÷ 1,000 g) = ₹72.50; jar ₹29.50 at 100 Pcs; wick ₹5.90; unit total ₹218.28; × 300 = ₹65,484.24; 12 retained = ₹2,619.36 (4.0%); 3 fresh reference = ₹654.84 (1.0%); three-candle reference materials at the same rates = ₹654.35 using 1 kg wax pricing (₹330.65 wax + ₹217.50 oil + ₹88.50 jars + ₹17.70 wicks). A 300-unit run needs 55.2 kg of wax and 4.8 kg of oil; 1 kg is the largest listed fragrance pack, so 4.8 kg is five bottles at the listed per-kilo ceiling. Rework figure: 300 wicks × ₹5.90 = ₹1,770. Jar pack saving 5 Pcs to 100 Pcs = ₹10.62 per jar, ₹3,186 across 300. Planning assumptions labelled in text: 8% load as a percentage of finished candle weight; 300-unit batch as the worked example; 12 retained units split six with the inventory and six cooler and dark; monthly or checkpoint-based readings; 14–21 day cure convention for soy containers, matched between batch and reference; equilibration of all units in one room for at least several hours, ideally a day; two blind readers. Counts, intervals and thresholds are this guide's method, not an industry standard. Stated specifications: Woody Oud "6-10% for candles", "10-15% for wax melts", "Cure soy wax candles for 48-72 hours before burn testing"; Luxury Soy Wax Chunks "up to 13% fragrance load capacity", "Recommended fragrance load: 8% to 13% of total wax weight", "10% Recommended", add 80–90°C, pour 70–80°C (its details table also states 75–80°C), cure "minimum of 48 hours (ideally 1-2 weeks)"; 200ml Salsa jar "The 200ml capacity provides ample space for crafting beautiful votive or single-wick candles" — a volume, not a fill weight. Loads are wax formulation limits, not regulatory limits. Not stated anywhere and therefore not claimed: shelf life, expiry, best-before date, storage temperature or storage instruction on any of 107 fragrance-oil pages; any ageing or migration rate; any decay curve; any accelerated-to-real-time storage conversion; any assurance that stock is fit to sell. Prices and availability change — the linked product pages are always authoritative.