I’m Developing 10 Candle Fragrances — Should Each One Have Its Own Fragrance Load or Is Operational Simplicity Worth Standardising Them All at 8%?

The real choice behind a standard load

When a range grows to ten scents, the pouring room starts to feel it. Ten recipes, ten oil weights per batch size, ten chances to grab the wrong sheet. A single house load, 8% for everything, is an attractive answer. One number to train, one number to check, one line on every batch record.

The question is what that single number is actually doing. Different fragrance oils reach your throw standard at different loads. A strong single-note oil might pass at 6%. A volatile citrus might need the top of its stated range. A woody blend might sit in between. If you set 8% for all of them, some are over-scented and paid for, and some fall short.

So the honest version of the question is: what is the operational simplicity worth, and what does it cost in oil and in scents that underperform?

Three policies, costed on a ten-scent range

Take a range of ten CSI oils, each tested in the same 200 g soy candle. The working loads below are illustrations of what a maker might find, not test data; the prices are CSI's live 1 kg prices. Oil cost is grams times the 1 kg price divided by 1,000, and each extra percentage point in a 200 g candle is 2 g of oil.

Look at the all-8% column first. It appears cheap, at ₹704.18 for one candle of each scent, but only because two scents are below their working load. Woody Oud and Citrus Lemon would ship under-scented. That is not a saving; it is two weak products.

If you insist on one load that every scent passes, it has to be the highest working load in the range, 10%. At 20 g of oil per candle, one of each scent then costs ₹104.42 + ₹61.36 + ₹74.76 + ₹61.36 + ₹78.46 + ₹152.92 + ₹100.54 + ₹99.12 + ₹90.62 + ₹56.64 = ₹880.20. That is the true price of a single standard for this range: ₹880.20 − ₹683.92 = ₹196.28 more than per-SKU loads for every set of ten candles.

The per-SKU column is cheapest at ₹683.92, and the banded column costs ₹703.42, a gap of ₹19.50 per set. Banding rounds Lavender up from 6% to 7% and Woody Oud from 9% to 10%, and those two rounding decisions account for the whole difference.

What per-SKU precision costs on the pouring floor

The oil column is only half the story. Per-SKU loads carry costs that are harder to put a rupee figure on, but they are real.

On a small range poured by one careful person, per-SKU loads are manageable, and the ₹19.50 per set may be worth keeping. On a range poured by several people, in several batch sizes, the saving can easily be lost to a single wrong-load batch that has to be sold cheaply or re-melted.

When per-SKU loads are worth the effort

There are cases where the precision pays. The clearest is an expensive oil sitting well below its band. In the example, Lavender tested at 6% but was rounded into the 7% band, costing 2 g × ₹5.221 = ₹10.44 extra per candle. If Lavender is your bestseller and you pour several hundred a month, that single rounding decision may be worth its own recipe line, while the other nine scents stay banded.

The reverse is also true. For low-priced oils poured in small numbers, the rounding cost is trivial. Rounding British Rose or Eucalyptus Spearmint up by one point costs 2 g × ₹3.068 = ₹6.14 per candle; if you pour twenty a month, that is ₹122.80, which is less than the cost of one re-melted batch.

So the sensible pattern for many makers is bands by default, exceptions by volume. Keep a short list of high-volume, high-price scents that earn their own load, and band everything else.

Building your bands

Two bands are sometimes enough. In the example, a 7% and 10% pair would push the four 8% scents up to 10%, costing 4 g more oil per candle on each of them. Whether that trade suits you depends on how often those scents are poured.

Common objections to banding, answered

Customers will notice the difference between bands. They should not, because the bands exist to make each scent reach the same throw standard. A 7% lavender and a 10% lemon are meant to feel similarly present in the room. If customers can tell which band a candle came from, the working loads were not tested properly.

Bands are just a compromise, so the per-SKU load must be better. Per-SKU loads are better only on the oil line. Once wrong-sheet errors, training time and re-testing are counted, bands often come out ahead for any range poured by more than one person.

What about a new scent that tests at 9%? It joins the 10% band, exactly as Woody Oud did in the example. If several new scents cluster at 9%, that is the signal to consider a fourth band, not before.

Can a scent move bands? Yes, and it should when its working load changes, for example after a switch of wax or jar size. Record the move, re-check the wick, and update the colour-coded sheet the same day.

Seeing it at your production volume

Per-set figures feel small. Multiply by volume. Suppose you pour 50 candles of each scent in a month, which is 50 sets of ten. The gap between per-SKU loads and bands is 50 × ₹19.50 = ₹975.00. The gap between bands and a 10% standard is 50 × ₹176.78 = ₹8,839.00.

That puts the decision in proportion. Banding gives up under a thousand rupees a month for a much simpler pouring floor, while avoiding nearly nine thousand rupees a month of unnecessary oil from over-standardising. Your own volumes will differ; run the same sums with them.

Finally, keep the tested working load for each scent in your records even when you pour to a band. If you later move a scent into a bigger vessel or a different wax, that number is where the next test starts.

Where this page fits

CSI already has guides that cover parts of this question. This page answers the specific oil-in-wax question above; these go deeper on the rest:

Three things to buy for this job

Frequently asked questions