My Candle Smells Fine During the First Burn but Unpleasant After Several Burns — Could Repeated Heating of the Wax and Fragrance Be Changing the Scent?
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Candle Wick Trimmer ₹588.82 · debris catcher Gilli Mitti 50 g ₹448.00 · every size in stock CSI 464: ₹260.00 for 500 g
Fine at first, unpleasant later · heat or time?
Keep a twin on the shelf, compare on the same day, then fix the routine, the wick or the oil.
★★★★★
"Ordered soy wax, fragrance oils, wax and thermometer — everything was great quality! Gilli Mitti and Pumpkin Spice scents are amazing and authentic. Packaging was secure and delivery was on time. Highly recommended for candle makers! ⭐⭐⭐⭐⭐"
RenuVerified buyer · Jul 2026
Gilli Mitti (Patchouli)
★★★★★
"Very good"
Reena BagalVerified buyer · Oct 2025
Sandalwood Fragrance Oil
★★★★☆
"Good product and I fully satisfaction with my end result"
Urvashi PatelVerified buyer · Aug 2026
Sacred Sandal Ember Fragrance Oil
★★★☆☆
"Warm comforting fragrance"
M AVerified buyer · Sep 2025
Autumn
★★★★★
"One of the best wax for container Candles. Easy to work with, especially if you are a beginner."
ThenirvaofficialVerified buyer · Nov 2025
Luxury Soy Wax CSI 464 (Flakes Form) For Container Candles
★★★★★
"The jars were of good quality"
Soumili GopeVerified buyer · Mar 2026
Clear Glass Jar with Golden Lid (150 gram)
★★★★★
"Ordered soy wax, fragrance oils, wax and thermometer — everything was great quality! Gilli Mitti and Pumpkin Spice scents are amazing and authentic. Packaging was secure and delivery was on time. Highly recommended for candle makers! ⭐⭐⭐⭐⭐"
RenuVerified buyer · Jul 2026
Gilli Mitti (Patchouli)
★★★★★
"Very good"
Reena BagalVerified buyer · Oct 2025
Sandalwood Fragrance Oil
★★★★☆
"Good product and I fully satisfaction with my end result"
Urvashi PatelVerified buyer · Aug 2026
Sacred Sandal Ember Fragrance Oil
★★★☆☆
"Warm comforting fragrance"
M AVerified buyer · Sep 2025
Autumn
★★★★★
"One of the best wax for container Candles. Easy to work with, especially if you are a beginner."
ThenirvaofficialVerified buyer · Nov 2025
Luxury Soy Wax CSI 464 (Flakes Form) For Container Candles
★★★★★
"The jars were of good quality"
Soumili GopeVerified buyer · Mar 2026
Clear Glass Jar with Golden Lid (150 gram)
Reviews collected and published through Judge.me on candlemakingsuppliesindia.store. They are general reviews of the products named on each card, not assessments of the advice set out below. Wording is unedited.
✓ Prices verified 26 September 2026, stock checked per size ✓ MSDS and IFRA documentation on request on WhatsApp ✓ Raw materials only — CSI does not sell finished candles
CSI Diagnostics · Turns After Several Burns
A candle on its fifth burn is also older, lower in the jar and carrying four burns of debris. Keep a twin unlit, burn both on the same day, and you know whether heat history or time changed the scent.
2 twins
one burned five times, one kept on the shelf, compared on the same day · CSI live pricing, September 2026
Quick answers — read this first
My candle smelled great on the first burn and unpleasant a few burns later. Is repeated heating changing the scent? It can, but it is one of several suspects. The others are debris collecting in the pool (carbon from the wick, match fragments, trimmings), a wick that burns dirtier as it builds carbon, and the candle simply ageing. Only one pair of candles tells them apart.What is the test? Two twins from the same pour. Burn candle A five times on your normal schedule. Keep twin B unlit and lidded on the same shelf, then burn it once on the same day as A's fifth burn. Same age, different heat history.
How do I read it? B fine and A unpleasant = heat history or contamination: something happened in A's pool. Both unpleasant = ageing or the oil: it happened with time, burned or not.
What does it cost? Nothing if you still have two unburned twins. A fresh pair in the Gilli Mitti worked example costs ₹555.68 in materials: 24 g of oil, 276 g of CSI 464, two jars and two C1 wicks.
The short answer
Suspects, most likely first (judgement): debris or carbon in the pool, a wick building carbon burn by burn, repeated long burns using up the bright notes, then ageing or the oil itself.
The test: candle A burned five times; twin B unlit and lidded, burned once on A's fifth-burn day; both sniffed blind in turn, room aired between.
The rule: B fine, A off → heat history or contamination. Both off → age or oil; a freshly poured candle C from the same bottle splits those two.
The cost: nothing with existing twins; ₹555.68 for a fresh pair, excluding labour, freight, packaging and GST.
In this guide
The pair on a timeline, drawn to scale in days (a worked-example schedule). A and B share a pour, a wax, an oil, a wick and an age; only A has been burned four times before day 15. What smells different on day 15 is either in A's pool or in both candles.
The same trim, crumbs caught · ₹588.82
Candle Wick Trimmer: keeps carbon out of the pool you are testing
Worked-example oil · 6–10% for candles · ₹448.00 for 50 g
Gilli Mitti (Patchouli): an earthy profile where rich and musty sit close
WhatsApp +91 7397976926
Send us your A/B log and debris notes and we will read them with you
Straight answer
My candle smells fine during the first burn but unpleasant after several burns. Could repeated heating of the wax and fragrance be changing the scent?
Possibly, but "repeated heating" is really three different suspects, and a fourth one has nothing to do with heat. What the pool collects: carbon crumbs from the wick, match fragments, trimmings and dust sit in the pool and get reheated every burn; in our judgement this is the commonest reason a candle turns acrid or dirty-smelling over several burns. What the wick does: a wick that builds carbon burn after burn tends to burn dirtier. What the pool loses: repeated long burns can use up the brightest top notes first, leaving a heavier, flatter smell that some people read as unpleasant (a tendency). Time: the candle, or the oil, may simply have aged, burned or not. You separate heat from time with a pair of twins: burn A five times, keep B unlit and lidded, and burn B once on the same day as A's fifth burn. If B smells fine and A doesn't, the change happened in A's pool: check the debris log and the wick. If both smell off, it happened with time: pour a fresh candle from the same bottle to see whether the oil or the aged candle is to blame.
One line: keep a twin unlit, burn it on the day of the other's fifth burn, and you know whether heat history or time changed the scent.
If you have two unburned twins, the test costs nothing. If trimmings or carbon keep ending up in the pool, the Candle Wick Trimmer (₹588.82) catches them; scissors over a tissue work too. In stock on 26 September 2026.
Buy the trimmer — ₹588.82
How a candle can change between burn one and burn five
Burn one meets a clean surface, a fresh wick and every note in the oil. Burn five meets whatever the first four left behind.
A container candle is not the same object on its fifth burn as on its first. Four things have changed, and only some of them are the oil.
The pool has a history. Every burn melts the top layer, holds it hot for hours and lets it set again. Anything that fell in (carbon from a mushroomed wick, a match head, a trimmed wick end, dust, a small insect with the window open in monsoon) is now part of the wax and gets heated again next time. Charred debris reheated in a pool can add a burnt, acrid or "dirty" edge, and a fragment near the wick can act as a second, tiny wick that flares or smokes. These are tendencies, but they are the first thing to rule out because they are visible.
The wick has a history. A wick that forms a carbon cap and is not trimmed back tends to burn with a larger, dirtier flame next time. That is a combustion change, not a scent change, but the nose cannot tell the difference. Carbon over repeated cycles has its own post, mushrooming after several cycles.
The oil in the top layer has been heated for hours. Lighter, brighter notes tend to leave a hot pool first. A candle burned for long sessions can end up smelling heavier, flatter or more "base note" on later burns (a tendency, and it varies by oil). This is not the oil going bad; it is the balance shifting. With an earthy profile like Gilli Mitti ("fresh rain, soft soil, natural patchouli, damp woods, and light musk"), the fresh-rain opening fading and the soil and patchouli remaining can read as "musty" to some noses (judgement).
Time has passed. By the fifth burn the candle may be two or more weeks older than at the first. Some oils change as they age, and light and warmth tend to speed that up. This affects an unburned candle just as much, which is exactly why twin B exists.
Two neighbouring problems are not this one. If the candle got weaker as it went down the jar, without smelling unpleasant, that is the weaker-halfway post. If the bottom smells different from the top and you suspect the oil was never evenly spread, that is the slice test. And if the scent's character moved between day 1 and week 2 of cure, before any repeated burning, that is the day-1 versus week-2 descriptor log.
The suspects, and what separates them
Four of these five suspects are about what happened to one candle. Only the last is about the oil in the bottle.
The table ranks the causes behind "fine at first, unpleasant later" in the order we would suspect them, most common first. That ranking is editorial judgement; CSI publishes no failure statistics.
Differential table · unpleasant only after several burns
Ranked most common first (judgement) · what would rule each in or out
| # | What you notice | Likely cause | Rules it in | Rules it out |
|---|---|---|---|---|
| 1 | Dark specks or flakes in the set wax; acrid or "dirty" edge | Debris and carbon in the pool (contamination) | Debris log shows material; B, with a clean pool, smells fine | Clean pool every time; B off too |
| 2 | Flame larger and smokier on later burns; carbon cap on the wick | Wick building carbon (combustion drift) | Carbon cap photographed after each burn grows | Calm flame and clean wick at burn five |
| 3 | Heavier, flatter, "stale" rather than burnt; opening notes gone | Heat history of the top layer (bright notes used up) | B still has its opening; A doesn't; no debris | A and B smell the same |
| 4 | Stronger and hotter as well as unpleasant, near the lower part of the jar | Depth: a hotter, deeper pool lower down | Pool and flame larger at burn five than at burn one | Similar pool and flame; see 3253 for depth-linked strength |
| 5 | Unpleasant from the first burn of an old candle, lit or not | Ageing of the candle, or the oil itself | B off too on day 15 | B fine on day 15 |
Rows 1 to 4 are all "heat history" in the broad sense: they only happen to a candle that has been burned. Row 5 is time. The pair test puts that line in the right place, and the debris log and wick photos then choose between rows 1 to 4.
Mistake: concluding "the oil degrades when heated" from one candle that smelled off on its fifth burn. Why it misleads: that candle is also older, lower in the jar, carrying four burns' worth of debris and possibly a carbon-capped wick. Fix: compare it with a twin of the same age that has never been lit. Without B, you cannot tell heat from time.
The heat-history vs age pair
Two candles from one pour. One lives the customer's life; the other waits on the shelf.
Use two unburned twins from the batch that turned, if you still have them; they are at least as old as each other by definition. If not, pour a fresh pair in your usual wax, oil, load, wick and jar. Worked example: Gilli Mitti at 8% of total weight in CSI 464, 150 g jar, C1 wick: 12 g of oil + 138 g of wax per candle; 24 g of oil and 276 g of wax for the pair. Gilli Mitti's page states "6-10% for candles" and CSI 464 "up to 10%", so 8% sits inside both ceilings whatever basis the pages mean.
1
Label and store them the same wayCode the bases A and B. Both lidded, on the same shelf, in the same room, out of direct sun. The only difference from here on is that A gets lit.
2
Burn A like a customer wouldWorked example: burns on days 7, 9, 11, 13 and 15, each until the pool reaches the jar edge or four hours pass, whichever comes first (common practice). Trim to the same length before every burn (the trimmer page's tip is "Trim your wick to 1/4 inch before every burn"), light with a long lighter, lid it once cool. Burn within sight, never unattended.
3
Log every burn of AMinute the pool reaches the edge; flame calm or restless; carbon on the wick when extinguished (photograph it); a one-line descriptor at one hour, sniffed on entering from outside; and the debris check in the next section once the wax has set.
4
Day 15: burn both, in turnA's fifth burn and B's first on the same day, one after the other, never together. Air the room well between them and randomise which goes first. Same trim, same room, fan and AC off.
5
Sniff blindA helper lights and codes them; the sniffer walks in from outside at one hour and at full pool and writes a descriptor and "pleasant / neutral / unpleasant" for each. A second sniffer who has not smelled either candle before is better still, because your own nose has lived with A for a fortnight (nose fatigue versus weak throw covers adaptation).
6
Note the confound honestlyOn day 15, A is lower in the jar than B. If A's flame and pool are clearly bigger than B's, part of the difference may be depth, not history; record both pools. Do not judge glass heat by touch.
Bill of materials · a fresh pair · worked example
Gilli Mitti 50 g · CSI 464 · Clear Glass Jar with Golden Lid (150 gram) · Eco C1 · CSI live pricing, 26 September 2026
| Item | Size bought | Used | Cost of what is used |
|---|---|---|---|
| Gilli Mitti (Patchouli) | 50 g, ₹448.00 (₹8.96/g) | 24 g (26 g left) | ₹215.04 |
| Luxury Soy Wax CSI 464 | 1 kg, ₹507.40 (₹0.51/g) | 276 g | ₹140.04 |
| Clear Glass Jar with Golden Lid (150 gram) | Pack of 10, ₹944.00 | 2 jars | ₹188.80 |
| Eco Candle Wicks, Thin (C1) | 10 wicks, ₹59.00 | 2 wicks | ₹11.80 |
| The pair, materials | 2 candles | ₹555.68 (₹277.84 per candle) | |
| Follow-up C (only if both turn) | same bottle | 12 g more (14 g left in the 50 g) | ₹277.84; ₹833.52 for all three |
Costs are worked examples and exclude labour, freight, packaging and GST. From nothing, the outlay is ₹1,711.00 (Gilli Mitti 50 g, CSI 464 500 g, ten jars, ten C1). Three 15 g bottles instead of one 50 g would cost ₹420.00 for 45 g; the 15 g is ₹0.37 a gram dearer than the 50 g.
The pool-debris check, burn by burn
Look at the wax after it sets. Debris is easier to see in a solid surface than in a liquid pool.
After each burn of A, let the candle set fully with the lid off, in the same room. Then look across the surface in good light, and through the clear glass from the side. Record what you see in one line, and remove anything loose from the set surface with clean tweezers, never from a liquid pool.
Debris log · what to look for after each burn
Where it comes from, what it tends to do, and how to stop it next time
| Debris | Where it comes from | What it tends to do | Prevention |
|---|---|---|---|
| Black carbon flakes near the wick | A carbon cap breaking off during the burn or at extinguishing | Reheated each burn; can smell acrid; can flare | Trim before every burn; see 3247 if the cap regrows fast |
| Wick trimmings | Trimming over the jar | Act as a second, tiny wick; smoke | Trim with a catcher, or over a tissue, wick cool |
| Match fragments or heads | Lighting with matches, dropping them in | Sulphur and charred wood in the pool | Long lighter for the test and on your label |
| Dust, fibres, insects | Lid off between burns; open windows (common in monsoon) | Charred specks; odd smells when reheated | Lid on once cool; burn away from open windows |
| Grey film or soot specks on the surface | Smoke settling back as the flame is put out | Adds to the dirty edge over burns | Extinguish calmly; extinguish-smoke is 3213 |
A clean surface after all five burns is useful evidence too: it removes row 1 of the differential and points at the wick, the heat history of the top layer or depth. And if the debris log fills up, you may already have your answer before day 15: remove it, keep burning, and see whether the unpleasant edge fades as the contaminated layer is burned through.
What this means for your label
If contamination is the finding, the fix is mostly the customer's routine: trim before every burn with the cutter over a tissue, light with a long lighter, keep the lid on when cool, don't drop anything in the pool. Put it in your care wording. The maker's side is choosing a wick that does not mushroom heavily for that oil.Reading day 15
Only one of these rows points at the bottle.
Decision rule · heat history vs age
A = burned five times · B = unlit twin, burned once on the same day · both sniffed blind
| A on day 15 | B on day 15 | Debris and wick log | Reading | Next step and purchase |
|---|---|---|---|---|
| Unpleasant | Fine | Debris found | Contamination in A's pool | Trim routine and care wording; nothing new to buy unless you want a trimmer |
| Unpleasant | Fine | Carbon cap grew burn by burn | Combustion drift from the wick | Wick one step down for this oil, confirmed through the jar; ten C1 at ₹59.00 if you use C2 |
| Heavier, flatter | Fine, brighter | Clean pool, calm flame | Heat history of the top layer | Shorter-burn guidance; in formulation, an oil with more heart and base (see 3122) |
| Unpleasant | Unpleasant | Any | Ageing of the candle, or the oil | Pour candle C from the same bottle; burn at the same cure age as B's first check |
| Fine | Fine | Any | Not reproduced | Your first report may have been nose fatigue or the room; fresh-nose check |
For the "both unpleasant" row, candle C does the last split. C is poured fresh from the same bottle, so the oil is the same age as in A and B but the candle is new. If C smells fine at its own day 15, the age at which B was judged, the time the oil spent in the wax changed it. If C also smells off, the bottle itself has changed or the oil's character is simply not to your taste in this wax. Before blaming a supplier, run the own-stock audit (bottle age since opening, headspace, storage heat). CSI does not publish lot data; for your order's details and the MSDS, ask us on WhatsApp.
Mistake: burning A and B together on day 15 "to save time". What happens: two flames, one room, one nose: you smell a blend and cannot say which candle is off. Fix: one after the other, room aired between, order randomised, sniffer blind.
What not to buy when a candle turns
A candle that turns on burn five is most often telling you about burns one to four, not about the bottle.
What not to buy yet: a replacement oil before day 15 has shown B off too; in rows 1 to 3 the oil is not the problem. More oil to "cover" the unpleasant edge: going from 8% to 10% adds ₹26.88 of Gilli Mitti per 150 g candle, and a heavier load tends to feed a wick that is already building carbon. Never go above the lower of the oil page's and the wax page's stated maximum (both 10% here; a cautious top rung on CSI 464 is 9%, 13.5 g per 150 g). A new wax. Nothing in this test implicates it; changing wax resets your wick, temperatures and cure. A 1 kg of anything. The pair and C use 36 g of oil.
We sell the trimmer on this page, and a good one makes the routine easier. We would still tell you that scissors over a tissue do the diagnostic job, and that in most of the rows above the fix is a habit, not a product.
When the right purchase is nothing: if you still have two unburned twins, the whole test is free. If the debris log shows carbon and trimmings in A's pool, the fix is the trim routine and the care wording on your label. In our judgement, that covers many "it went off after a few burns" reports.
What to buy for the pair
Five items: the trimming tool (the route debris takes), the worked-example oil, and the wax, jars and wicks for a fresh pair if you have no unburned twins. Chosen on page statements, price per gram or unit and stock on 26 September 2026; CSI has no measured throw data, so nothing is ranked on performance. The oil table shows every size, 150 g candles at 12 g and 24 g pairs.
1
tool · the debris route and the trim
Candle Wick Trimmer
On a candle that goes off burn by burn, where the carbon from each trim lands matters. The page describes "The built-in debris catcher keeps your surfaces wax-free" and gives the tip "Trim your wick to 1/4 inch before every burn" (about 0.64 cm); it also claims regular trimming "enhances scent throw", which is the page's claim, not a measured result. For the test, what counts is that A is trimmed the same way before every burn and that trimmings never fall into the pool. Argued against our own interest: scissors on a cooled wick, trimmed over a tissue, do the same job; the cutters at ₹295.00 and ₹177.00 are cheaper if you want a dedicated tool without the catcher.
| Size | Price | Per unit | What it covers |
|---|---|---|---|
| Candle Wick Trimmer | ₹588.82 | ₹588.82 | the same trim on A before every burn; catches the crumbs |
| Candle Wick Cutter (11 cm) | ₹295.00 | ₹295.00 | the same trim, no catcher mentioned: trim over a tissue |
| Candle Wick Cutter (10.5 cm) | ₹177.00 | ₹177.00 | the same, smallest blade |
The trimmer: ₹588.82. Buy trimmer — ₹588.82
2
fragrance oil · earthy/woody (petrichor) · the worked-example oil
Gilli Mitti (Patchouli)
An earthy, patchouli-led scent is a fair worked example because this is the kind of profile where "rich and earthy" and "musty" sit close together once the brighter notes have been used up (judgement). The page describes "fresh rain, soft soil, natural patchouli, damp woods, and light musk" and states "The recommended fragrance load is 6-10% for candles", adding "Use 6-7% for a subtle, grounding earth note in the background, or increase to 9-10% for a bolder petrichor presence". It states no cure time in the text we captured, so the test uses day 7 as common practice. Every size is in stock on 26 September 2026. Argued against our own interest: from 50 g to 1 kg the price is flat at ₹8.96 a gram, so the 1 kg saves nothing per gram. A fresh pair plus the follow-up candle takes 36 g: buy 50 g, not 100 g.
| Size | Price | Per gram | 150 g candles at 8% | Test pairs (24 g each) |
|---|---|---|---|---|
| 15 g | ₹140.00 | ₹9.33 | 1 | none (15 g of the 24 g) |
| 50 g | ₹448.00 | ₹8.96 | 4 | 2 (+2 g) |
| 100 g | ₹896.00 | ₹8.96 | 8 | 4 (+4 g) |
| 500 g | ₹4,480.00 | ₹8.96 | 41 | 20 (+20 g) |
| 1 kg | ₹8,960.00 | ₹8.96 | 83 | 41 (+16 g) |
A fresh pair: 24 g = ₹215.04. Buy 50 g — ₹448.00
3
wax · only for a fresh pair, and only if it is your wax
Luxury Soy Wax CSI 464 (Flakes Form) For Container Candles
If you still have two unburned twins from the pour that went off, use them and buy nothing. If you need a fresh pair, pour it in the same wax as your product. The page states "Fragrance Load Up to 10%" and "Pour Temperature 80°C – 90°C"; in the 150 g jar, whose page says "Safe for hot pour up to 85°C", pour at 80–85°C. Flat at ₹0.51 a gram from 1 kg to 10 kg; the 500 g (₹0.52 a gram) covers the pair and C.
| Size | Price | Per unit | What it covers |
|---|---|---|---|
| 500 g | ₹260.00 | ₹0.52 per g | a fresh pair (276 g) plus C |
| 1 kg | ₹507.40 | ₹0.51 per g | the pair, C and a re-pour once decided |
| 5 kg | ₹2,537.00 | ₹0.51 per g | production, after the verdict |
A fresh pair: 276 g = ₹140.04. Buy 500 g — ₹260.00
4
container · identical jars, lidded between burns
Clear Glass Jar with Golden Lid (150 gram)
The lid is part of the test: B waits with its lid on, and A is lidded between burns so dust and insects stay out of the pool. The page gives an outer diameter of 7 cm and says "Safe for hot pour up to 85°C". Clear glass shows you soot and debris without lifting anything out. ₹94.40 a jar in either pack, both in stock on 26 September 2026.
| Size | Price | Per unit | What it covers |
|---|---|---|---|
| Pack of 10 | ₹944.00 | ₹94.40 | A, B, C and spares for a repeat |
| Pack of 20 | ₹1,888.00 | ₹94.40 | the same per jar; production only |
Two jars: ₹188.80. Buy 10 — ₹944.00
5
wick · the same wick on every candle
Eco Candle Wicks — Thin (C1) and Thick (C2)
A, B and the follow-up C must all carry your production wick, so the only difference between them is heat history or age. The page describes wicks made from "natural fibers like cotton and paper". If A's wick grows a carbon cap burn after burn, that is a combustion clue; how carbon builds over cycles is the mushrooming post. Every pack in stock on 26 September 2026, ₹5.90 a wick for C1 and ₹9.44 for C2 at every pack size.
| Size | Price | Per unit | What it covers |
|---|---|---|---|
| Thin (C1) / 10 | ₹59.00 | ₹5.90 | A, B and C on the same wick |
| Thick (C2) / 10 | ₹94.40 | ₹9.44 | if C2 is your production wick |
| Thin (C1) / 100 | ₹590.00 | ₹5.90 | production, after a full burn-down |
Two C1 wicks: ₹11.80. Buy C1 — ₹59.00
Diwali is 8 November 2026, 43 days from 26 September 2026. A 15-day pair started now leaves 28 days to change the routine, the wick or the oil and pour for the season. Send us your pair results and candle count on WhatsApp for a quote with a GST invoice and a dispatch date.
WhatsApp a Diwali quote
The CSI principle
Keep a twin on the shelf before you blame the heat.
A candle that has been burned five times is also older, lower and dirtier. Only an unlit twin of the same age tells you which of those changed the smell.
"Burn one tells you about the oil. Burn five tells you about everything that happened to the candle since."
— CandleMakingSuppliesIndia
Why trust this guide
CandleMakingSuppliesIndia sells the oil, wax, jars, wicks and tools named here, and does not sell finished candles. This page still tells you that the test is free if you have two unburned twins, that scissors do the trimmer's job, that the Gilli Mitti 1 kg saves nothing per gram over the 50 g, and that, in our judgement, many candles that turn after several burns need a routine rather than a purchase.
Every price and per-gram figure was verified on CSI's live store on 26 September 2026; every size in the pick tables is in stock on that date, and the tables are built to flag any size that is not. Load, temperature, wick and jar wording is quoted from the product pages; where a page is silent in the text we captured, we say so. CSI does not publish lot or batch data.
The cause ranking, the debris log and the reading of each result are editorial judgement; the day schedule, the four-hour cap and day-7 cure are worked examples or common practice; CSI publishes no measured throw data. For bulk pricing, GST invoicing, and MSDS and IFRA documentation on request, message us on WhatsApp at +91 7397976926.
Frequently asked questions
Why does my candle smell bad after a few burns?
In our judgement, most often because of what has collected in the pool (carbon, trimmings, match fragments) or a wick building carbon burn by burn. Repeated long burns can also use up the bright notes first. Compare it with an unlit twin of the same age to see whether heat or time is to blame.
Does reheating candle wax change the fragrance?
It can shift the balance: lighter notes tend to leave a hot pool first, so later burns can smell heavier or flatter. That is a tendency, not a fault. Burn one candle five times and its unlit twin once on the same day; if only the burned one has changed, heat history is involved.
Can carbon from the wick make a candle smell burnt later on?
Carbon flakes and trimmings that fall into the pool get reheated every burn and can add an acrid edge. Check the set wax after each burn, remove loose debris with tweezers, and trim the cooled wick before every burn, away from the jar.
Does fragrance oil go bad in a candle over time?
Some oils change as they age, and light and warmth tend to speed that up. If an unlit twin also smells off at the same age, time is involved; pour a fresh candle from the same bottle to see whether the bottle or the candle has aged. CSI does not publish lot data; ask on WhatsApp for order details.
How long should I burn a candle each time when testing?
Common practice is to burn until the pool reaches the jar edge, often about 3–4 hours on a first burn (a rule of thumb), and to stop at about four hours. Keep the same burn length on every candle you compare, and stop with about 1 cm of wax left.
Is Gilli Mitti fragrance oil good for candles?
Its page describes fresh rain, soft soil, patchouli, damp woods and light musk, and states 6–10% for candles. Earthy profiles can read richer or mustier as burns go on, so test it through several burns against an unlit twin before you launch it.
Before you blame the oil
Burn one twin five times, keep the other on the shelf, and compare them on the same day.
B fine and A off means the change happened in A's pool: check the debris and the wick. Both off means time: pour a fresh candle from the same bottle. With two unburned twins, it costs nothing. Send us your log on WhatsApp and we will read it with you.
Buy the trimmer — ₹588.82 Send your pair log on WhatsApp
Continue the read — fragrance changing during the burn
- My Fragrance Oil Smells Beautiful in the Bottle but Develops a Burnt Smell When the Candle Is Lit — What Could Be Causing the Fragrance to Distort?
- My Scented Candle Develops an Oily or Fuel-Like Smell While Burning Even Though the Fragrance Smells Normal When Cold — What Should I Troubleshoot?
- My Candle Smells Strong During the First Few Burns but Becomes Weaker as It Gets Halfway Down the Jar — Why Would Fragrance Performance Change Through the Candle?
- My Candle Smells Different at the Bottom of the Jar than It Did at the Top — Could the Fragrance Oil Be Distributed Unevenly Through the Wax?
- My Candle Smells Strong When Cold but I Can Barely Smell It After Lighting — How Do I Know Whether the Problem Is My Fragrance Oil, Wax or Wick?
- My Wick Starts Mushrooming Only After Several Burn Cycles — Should Wick Testing Continue Until Almost All the Wax Is Consumed?
- My Candle Has Great Hot Throw Early but Becomes Overwhelmingly Strong Near the Bottom — Could Increased Heat Be Releasing Fragrance Faster?
- My Candle Fragrance Performance Changes from Batch to Batch Even Though I Follow the Same Formula — What Raw-Material Variables Should I Investigate?
Editorial standards & sources
About this guide: part of CSI's cluster on fragrance disappearing or changing during burning (3201–3220). It covers one situation, a candle that smells fine at first and unpleasant after several burns, with a ranked differential table labelled as judgement, a heat-history vs age pair test drawn on a timeline, a burn-by-burn pool-debris log, a decision rule with a fresh-pour follow-up, and a what-not-to-buy box.Customer reviews: The six reviews at the top of this page are genuine, published Judge.me reviews left by CSI customers on the product pages named on each card — Autumn, Clear Glass Jar with Golden Lid (150 gram), Gilli Mitti (Patchouli), Luxury Soy Wax CSI 464 (Flakes Form) For Container Candles, Sacred Sandal Ember Fragrance Oil, Sandalwood Fragrance Oil. They are general product reviews, not assessments of the diagnostic advice on this page. Names, star ratings, dates and products are as recorded by Judge.me and wording is unedited. "Verified buyer" appears only on reviews Judge.me recorded as verified — Renu, Reena Bagal, Urvashi Patel, M A, Thenirvaofficial, Soumili Gope. Reviews below five stars are included as published, not filtered out.
Figures verified 26 September 2026, CSI live pricing: Gilli Mitti (Patchouli) 15 g ₹140.00 (₹9.33/g), 50 g ₹448.00 (₹8.96/g), 100 g ₹896.00 (₹8.96/g), 500 g ₹4,480.00 (₹8.96/g), 1 kg ₹8,960.00 (₹8.96/g); Luxury Soy Wax CSI 464 500 g ₹260.00, 1 kg ₹507.40, 5 kg ₹2,537.00; Eco Candle Wicks Thin (C1) 10 ₹59.00, 100 ₹590.00; Thick (C2) 10 ₹94.40; Clear Glass Jar with Golden Lid (150 gram) Pack of 10 ₹944.00, Pack of 20 ₹1,888.00; Candle Wick Trimmer ₹588.82; Candle Wick Cutter ₹295.00 and ₹177.00. All in stock on 26 September 2026. Per gram = price ÷ grams; per wick or jar = pack price ÷ units; two decimals. Worked costs use the exact per-gram price, then round.
Non-price figures: load is a percentage of total candle weight (150 g at 8% = 12 g oil + 138 g wax; 10% = 15 g). Ceilings are page wording (Gilli Mitti 6–10% for candles; CSI 464 up to 10%) and are formulation limits, not regulatory limits. CSI 464 pour 80–90°C and the 150 g jar's hot pour up to 85°C are page wording; Gilli Mitti's page states no cure time in the text we captured. The day schedule (burns on days 7, 9, 11, 13 and 15) is a worked example; day-7 cure, the four-hour cap, the 3–4 hour full-pool time and stopping with about 1 cm left are common practice or rules of thumb. The cause ranking, debris log and readings are editorial judgement. Costs exclude labour, freight, packaging and GST. Diwali 8 November 2026 is a calendar fact.