Two Soy Waxes Have Different Fragrance Capacities — How Do I Compare Their Finished Cost per 200 g Candle at Their Optimal Fragrance Loads?

Used to the full, a higher fragrance capacity makes the dearer candle

Three CSI container waxes carry three published ceilings: CSI's product pages state up to 13% for Luxury Soy Wax Chunks and Premium Coconut Soy Wax CSI 468, and up to 10% for Luxury Soy Wax CSI 464. Take each at its ceiling as its optimal load — the example this page works through — and the finished 200 g candle with Woody Oud Fragrance Oil costs ₹258.66 in CSI 464 at 10%, ₹298.74 in Chunks at 13% and ₹305.35 in CSI 468 at 13%. The wax with the lowest capacity makes the cheapest candle, because three more load points put 6 g more oil in every jar.

That is the trap in comparing waxes by capacity. A higher ceiling is an option — the freedom to go further if your candle needs it — not a saving. If you use the option, you pay for it in oil. The comparison that matters is cost at the load each wax actually needs to reach your target strength, and that load is found with a ladder test, not read from the bag. Ceilings are the wax makers' stated formulation maximums; they are not regulatory limits and they are not the optimum.

So the honest answer has two halves. If your target strength is reachable at 10% or below, compare the waxes at the load each needs — and capacity above that is worth nothing to you. If your target needs more than 10% — a large room, a softer oil, a big jar — CSI 464 cannot legally be pushed there under its own stated maximum, and the comparison becomes Chunks against CSI 468 at the higher load, where Chunks is the cheaper of the two by ₹6.61 a candle at 13%.

Finished cost at each wax's optimal load (example: its ceiling)

The lead table prices the full 200 g candle — wax, oil, Eco Thin C1 wick (₹5.90) and White Matte Glass Jar (₹70.80) — with each wax at its stated ceiling taken as its optimal load. Wax at the 5 kg bag rate; Woody Oud at its 1 kg rate of ₹4.53 a gram. Material only: labour, packaging, freight and GST excluded.

Note where the money goes. CSI 464's wax line is the smallest of the three — its 180 g at ₹507.40 a kilo cost ₹91.33 — but the bigger difference is the oil: ₹90.62 against ₹117.81 at 13%, ₹27.19 less. Between Chunks and CSI 468 at the same 13%, only the wax price differs: 174 g × ₹38.00 a kilo = ₹6.61.

At equal loads the ranking follows price per kilo, as it should: CSI 464 is cheapest, then Chunks, then CSI 468. The ceiling comparison and the equal-load comparison are both legitimate; they answer different questions. The first asks "what does each wax cost if I use all its capacity?" The second asks "what does each wax cost at the same strength, if they reach it at the same load?" Your ladder test tells you which question you are really in. Comparing formulation cost when loads differ gives the break-even load between any two waxes.

What each load point costs, wax by wax

Every load point in a 200 g candle swaps 2 g of wax for 2 g of oil. Its cost is 2 g × (oil ₹/g − wax ₹/g), so it is almost entirely set by the oil, and only slightly by the wax. The table shows the cost of one point, and of the climb from 8% to each wax's ceiling, with Woody Oud.

A point costs a little less in the dearer waxes, because the wax being displaced is worth more — but the difference is a few paise. The real cost is the number of points you add. Going from 8% to 13% adds about ₹39.32 to every Woody Oud candle in Chunks; with a premium perfume-inspired oil it would add far more. That is why capacity should be bought only when the candle needs it.

When higher capacity is worth paying for

If your ladder shows CSI 464 reaching your target at 10% or below, its lower ceiling costs you nothing, and at 10% it makes the cheapest Woody Oud candle of the three here. If your target needs more than 10% — and only the ladder can tell you that — CSI 464 is out under its own stated maximum, and you choose between Chunks and CSI 468. At 12%, Chunks makes a ₹290.87 candle and CSI 468 a ₹297.56 one; at 13%, ₹298.74 against ₹305.35. Price decides that pair unless the ladder shows one reaching your target at a lower load than the other.

Capacity can also be worth something as headroom. A range with many oils, some weaker than others, may need a few SKUs above 10%. One wax that covers every SKU is simpler to run than two, and simplicity has a value that formulation complexity and easier pouring try to price. But headroom you never use is still free only if the wax costs no more per kilo — and here the two 13% waxes both cost more per kilo than CSI 464.

At the ceilings, the 13% waxes use less wax and much more oil per month. That changes your buying too: in this example 7.80 kg of Woody Oud a month at 13% against 6.00 kg at 10%. Woody Oud is priced linearly from 100 g to 1 kg (₹4.53 a gram), so buying bigger does not lower the rate; it only reduces how often you reorder. What ₹20, ₹50 or ₹100 a kilo means across 100 kg covers the wax side of large orders.

Finding each wax's optimal load: the ladder

The ladder pours each wax at a series of loads up to its stated maximum and scores them blind against one another. The optimal load for each wax is the lowest rung that matches the best result you get anywhere in the test — that is your target strength. If no wax beats CSI 464 at 10%, the higher ceilings have no value for this oil.

The priced ladder kit

24 candles across eight rungs. Wax and oil grams follow CSI's finished-weight convention, with a 5% pour-loss allowance (a working assumption). The oil is 471.0 g of Woody Oud across all rungs (494.6 g with allowance).

If you already sell in one of these waxes, its rungs can come from stock. The ladder uses one oil; if your range spans very different oils, repeat it for the weakest and the strongest — the optimal load is per oil, not per wax. How many fragrance types to test before approving a wax helps choose them.

The decision rule, ending in a purchase

With the example result — Woody Oud matching the best score at 10% in CSI 464 and gaining nothing above it in the 13% waxes — the purchase is Luxury Soy Wax CSI 464 in 5 kg bags at ₹2,537.00. A 300-candle month at 10% uses 54.00 kg of wax, 11 bags, and costs ₹12,024.36 less in materials than pouring Chunks at its 13% ceiling. If the ladder had shown 12% as your target, the purchase would be Luxury Soy Wax Chunks in 5 kg bags at ₹2,995.00. The cost-per-saleable-candle hub adds rejects to whichever result you get.

Capacity is one line among several. If the waxes also need different wicks, the wick-cost post adds that; if one produces more rejects at high loads, the rejects post folds them in; and lowest ₹/kg versus lowest cost per saleable candle brings fragrance, wick, labour and rejects onto one comparison.

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