My Fragrance Performs Well at 6% — Should I Intentionally Test 8% and 10% Anyway Before Finalising the Most Economical Commercial Load?

Why a passing 6% still deserves a bracket

Finding that an oil performs at 6% is a good outcome, and a cheap one. The temptation is to stop there and write 6% on the recipe card. That is often the right final answer, but it is worth confirming once, because a single test point hides two things you need to know for commercial production.

The first is robustness. You know 6% passed. You do not know whether it passed comfortably or scraped through. If performance drops sharply just below 6%, then ordinary variation, such as a gram under on the scale, a batch of oil that is slightly softer or a cooler season, could pull some candles below your standard.

The second is opportunity. You do not know what 8% or 10% would do. For some oils the answer is "slightly more of the same", which is rarely worth paying for. For others the balance of the scent changes, and a higher load might suit a particular product better. You cannot choose between those without pouring them.

Small loads make robustness a practical concern rather than a theoretical one. At 6% of a 200 g candle the dose is only 12 g. A pour that comes out at 11 g is 5.5% of the candle, not 6%, and a pour at 10 g is already the 5% probe. If your 5% candle turns out noticeably weaker, you now know that a gram or two of weighing slack in production matters, and you can tighten the process or add a margin. If 5% is almost as good as 6%, that slack is harmless.

Both questions are answered by one controlled bracket: a point below, your working point, and points above.

The bracket plan

Using the convention in this series, load is a percentage of total candle weight. In a 200 g candle the four points are straightforward to weigh.

The 5% candle deserves a clear label. Many CSI soy oil pages, Bergamot Amber included, state 6–10% for soy. A 5% candle is below that range, so treat it purely as a diagnostic probe that tells you about the curve, not as a candidate recipe.

Run the bracket once per oil and per wax, not every time you pour. Once the curve is known, it stays on the recipe card and only needs repeating when something material changes, such as a new wax, a new jar diameter or a new lot of oil that smells different on arrival.

When load changes the scent, not just its strength

Bracketing is often described as a hunt for strength, but for multi-note oils it is just as much a hunt for character. CSI's Bergamot Amber is a good illustration because its product page describes it directly: at 6% bergamot leads; at 8% the scent is balanced; at 10% amber comes forward and the vanilla and musk base becomes more prominent. That is the product page's own intensity guide, and your test in your wax will confirm how it plays out.

Read that way, the three loads are three slightly different products. A 6% Bergamot Amber candle leans bright and citrus-led; a 10% candle leans warm and resinous. Neither is wrong. If your brand is fresh and airy, 6% may be exactly right, and paying for 8% would move the scent away from your brief. If your brand is warm and evening-focused, 8% or 10% may be the better fit even though 6% technically passed.

The same logic applies to any oil whose notes differ in volatility. Top notes lift off the melt pool readily; heavier base notes need more heat and, sometimes, more presence in the wax to show. Changing the load changes that mix. Score each bracket point for character as well as strength, using a short line such as "which note leads?"

What each step costs

Bergamot Amber is ₹5,437.00 per kg, which is ₹5.437 per gram. The oil cost of each bracket point in a 200 g candle is: 5% at 10 g × ₹5.437 = ₹54.37; 6% at 12 g × ₹5.437 = ₹65.24; 8% at 16 g × ₹5.437 = ₹86.99; and 10% at 20 g × ₹5.437 = ₹108.74.

The step from 6% to 8% adds 4 g, or 4 × ₹5.437 = ₹21.75 per candle. If you pour 200 candles a month, that is 800 g more oil, or 800 × ₹5.437 = ₹4,349.60 a month. The step from 8% to 10% adds another 4 g and the same ₹21.75. Those are the sums the higher bracket points have to justify.

The downward probe has its own arithmetic. Dropping from 6% to 5% would save 2 g per candle, or 400 g across 200 candles, worth 400 × ₹5.437 = ₹2,174.80 a month. That saving is not on the table as a recipe because 5% sits below the stated range, but it explains why the probe matters: it shows whether 6% is the genuine floor or simply the first number you happened to try.

Choosing the final load

Lay out the four scored candles and read the curve. Four patterns are common, and each points to a different decision.

5% is close to 6%, and 8% adds little. Your working load sits in a flat, safe part of the curve. Keep 6% with confidence and bank the saving.

5% drops sharply, and 8% adds little. 6% works but sits near the edge. Consider 7% as a margin, which in a 200 g candle is 14 g, or 14 × ₹5.437 = ₹76.12 of Bergamot Amber, or keep 6% and tighten weighing and batch checks.

8% changes the character in a way that suits your brief. Choose on brief rather than on strength, and price the extra ₹21.75 into the product.

10% strains the wick or shows surface oil. Rule it out for this system. Knowing where the ceiling is in practice is useful even if you never go near it.

Whichever pattern you see, the final load now comes with evidence on both sides. That makes it easier to defend when a customer asks for a stronger candle and when you are tempted to trim oil to protect margin.

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