My Fragrance Oil Costs ₹4,000 Per Kg — How Much More Does a 10% Fragrance Load Cost Per 200 g Candle Compared With 8%?

Two percentage points is four grams

Start with the thing that decides the answer. A fragrance load is a percentage of wax weight, not of the finished candle. CSI product pages state loads that way — Luxury Soy Wax CSI 464 gives a maximum of 10% of total wax weight, and the Roasted Coffee page gives soy use of 6 to 10% of total wax weight — and this series follows the same convention throughout. So a 200 g candle in this post means 200 g of wax, and the oil is added on top of it.

With that fixed, the arithmetic is two multiplications. Eight per cent of 200 g is 16 g of oil. Ten per cent of 200 g is 20 g. The difference is four grams, every time, on every 200 g candle, whatever the oil costs. Your rate of ₹4,000.00 a kilogram is ₹4.00 a gram, so those four grams are ₹16.00. The fragrance line on your cost sheet moves from ₹64.00 to ₹80.00 and every other line stays exactly where it was.

Notice the shape of that. Going from 8% to 10% is a 25% increase in fragrance spend even though it is two percentage points, because the increase is measured against the 16 g you were already using, not against the candle. That is the sentence that catches people out when they scale a decision made on one candle, and it is the honest way to describe the move: a quarter more fragrance, for a fixed ₹16.00 on this candle at your rate.

Same wax, or same jar? The two versions of the same move

The ₹16.00 figure assumes you keep the wax at 200 g and let the fill rise, which is what most makers actually do when they are testing: same recipe, more fragrance. The jar receives 216 g at 8% and 220 g at 10%. Four grams is not much, but it is four grams your vessel has to have room for, and a jar poured to the brim at 8% has nowhere to put it.

If the fill is fixed — because the jar is full, or because your product weight is printed on a label and cannot move — then raising the load is a swap rather than an addition, and the arithmetic is a small piece of algebra rather than a subtraction. Load is a percentage of wax, so a fill is wax plus 10% of wax, or 1.1 lots of wax. Divide 216 g by 1.1 and the wax comes down to 196.36 g, with 19.64 g of oil. You displace 3.64 g of wax, worth ₹1.85 at ₹0.51 a gram, and you add 3.64 g of oil, worth ₹14.55 at your rate. The net step is ₹12.70 rather than ₹16.00.

What ₹16.00 actually is, next to the rest of the candle

A number means nothing alone. The step is 6.6% of a ₹242.18 materials bill, which is to say it is real but it is not the biggest decision on the sheet. Here is the honest comparison, and it does not flatter the shop: swapping the White Matte Glass Jar at ₹70.80 for a Clear Glass Votive Jar 70 gram at ₹31.86 is ₹38.94 a candle, more than twice the fragrance step — although it is a different candle at the end of it, and a smaller one. The vessel is almost always the line with the most money in it, and it is the line makers argue about least.

Delivery is the other comparison worth making before you spend an evening on this decision. A 1 kg pack of Roasted Coffee stores a packed weight of 1.5 kg, and the cheapest published band covering that weight in September 2026 is ₹180.00 on Standard Shipping. At 8% a kilogram of oil scents 62.5 candles and at 10% it scents 50, so that delivery lands as ₹2.88 a candle at 8% and ₹3.60 at 10%. Rates are the published flat bands as at September 2026 and can change. Two reviews on the store say these charges are high, which is fair; the answer is to order the oil with the rest of your materials rather than on its own.

And the step scales with one thing only: what a gram of your oil costs. Four grams times a rate. Below are five oils CSI stocks, at their 1 kg pack rates in September 2026, with the same 8% to 10% move costed on each. Your ₹4.00 a gram sits inside that range, which is the useful thing to know about your own rate.

The same step, priced on materials you can buy

Your rate is yours and it may be a good one. To make the arithmetic checkable, here is the identical move run on live CSI stock in September 2026. The fragrance is Roasted Coffee, bought as the 1 kg pack at ₹3,738.00, which is ₹3.74 a gram. Everything else is as before: 200 g of Luxury Soy Wax CSI 464 at ₹507.40 a kilogram, a White Matte Glass Jar at ₹70.80 and an Eco Candle Wicks Thin (C1) at ₹5.90.

Two details on that column are worth having before you buy. The Roasted Coffee pack ladder does move: the 100 gm pack is ₹3.90 a gram against ₹3.74 at 1 kg, so buying the smaller pack adds ₹3.24 to the fragrance line of a 10% candle. Check the ladder on the oil you actually buy rather than assuming a shape — on many CSI oils the rate per gram is the same from 50 gm upward, and the pack you choose then changes your outlay and not your cost per candle.

The second is not about money. The Roasted Coffee page states that vanilla and caramel base notes contain vanillin and recommends testing in white wax before a full batch, because vanillin can cause slight discolouration or yellowing over time. Raising the load raises the amount of it in the candle. The yellowing is cosmetic rather than a performance problem, but it is a reason to run the 10% version past a white-wax test rather than straight into production, and it is the sort of thing that is much cheaper to find at 20 g than at a hundred jars.

Why 10% is the end of the road on this pairing

Two published figures bound the load and the lower of them governs. Luxury Soy Wax CSI 464 states a maximum of 10% of total wax weight. The Roasted Coffee page states soy use of 6 to 10% of total wax weight, and adds that coffee projects strongly and to start at 8% and adjust to preference. Both stop at 10%, so moving from 8% to 10% uses every point of headroom this pairing has. These are the wax manufacturer's and the oil page's stated formulation maximums, not rules imposed from outside, and they are the numbers this page will quote rather than estimate.

That matters more than the ₹16.00. If you raise the load to 10% and the candle still does not throw the way you want, there is no eleventh per cent to try on these two products, and the next move has to be a different one: a different wick size, a longer cure, a different oil, or a different wax whose page states a higher ceiling. Spending your headroom is a one-way decision and it is worth making it deliberately rather than as the first thing you try.

Ceilings also differ by grade, which is the reason to read the page rather than carry a number across. Some CSI waxes state a maximum of 13% of total wax weight and some state nothing at all; where a grade publishes no figure, it publishes none, and the right answer is a message on WhatsApp rather than an assumption. The same goes for an oil page with no stated candle range. Never treat a ceiling you read on one product as though it belonged to another.

What the four grams does not buy

This is the part of the answer that arithmetic cannot give you, and it is the part worth being blunt about even though CSI sells the oil. Raising the load adds fragrance to the wax. Whether it adds throw depends on the wick, the cure, the vessel diameter and the oil itself, and beyond a point more oil makes things worse rather than better: wax that will not hold it sweats it out, a wick sized for an 8% candle can drown in a 10% one, and a candle can end up smelling strong cold and disappointing lit. The ₹16.00 is certain. The improvement is not.

Before spending the headroom, spend nothing and check three things. Cure is the first and costs only patience — a soy candle judged at 48 hours is being judged early, and the difference between a two-day candle and a two-week candle is routinely larger than two percentage points of load. Wick size is the second: a candle that cannot reach a full melt pool cannot release what is already in it, and that is a wick problem wearing a fragrance problem's clothes. Vessel and room are the third, because a jar with a small surface area in a large Indian living room is being asked to do something no load fixes.

The live guides go deeper on each of those than a costing page should: making candles smell strong without exceeding the safe fragrance load, what to check when a candle still smells weak at 10%, and wick choice by diameter. If any of those three is the real problem, ₹16.00 a candle buys you nothing and you have also used up the only headroom you had.

What the ₹242.18 and the ₹258.18 leave out

Neither figure on this page is your cost of goods. They are raw materials — wax, fragrance, vessel, wick — which is what CSI sells and therefore what can be priced from a live store. Everything else below is real and none of it is a CSI product, so no honest number for it exists here. Copy the rows, fill your own figures in, and total the sheet as materials from CSI plus your own costs.

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