My Replacement Sandalwood Fragrance Is Stronger than the Old One — Should I First Optimise Its Fragrance Load Rather than Automatically Using My Previous Percentage?

Why the old percentage is the wrong place to stop

A fragrance load is not a property of a scent family. It is the amount of one specific oil that gave you the throw you wanted, in one wax, without upsetting the burn. When the old sandalwood was developed, 8% was presumably where the throw met your target and the flame, pool and jar stayed clean. A replacement that is genuinely stronger reaches that throw target at a different amount — probably a lower one. Pouring it at 8% because that was the old number means you are no longer running at an optimum; you are running at someone else's.

Running a strong oil above its own optimum has three costs. It can give a candle that is stronger than your product was meant to be, which repeat customers notice. In general candle-making practice, extra oil beyond what the wax holds comfortably can show up as sweating or oil droplets in storage and can change how the candle burns — a mechanism commonly described, not measured on any CSI oil. And it costs money on every candle for scent nobody asked for. So the answer to the title is yes: find the new oil's own load first, with a ladder, before you settle on anything.

There is one trap before you start. "Stronger" judged from the bottle is not "stronger in wax". Some oils smell powerful out of the bottle and modest in a cured candle, and the reverse. The stronger-in-bottle, weaker-in-wax post covers that case; this page assumes the new sandalwood is stronger in a cured candle too, which the first rung of the screen will confirm or contradict.

The ladder: five rungs inside the wax's ceiling

A load ladder is a set of candles identical in every way except the load, spaced evenly so you can see where throw stops improving and where problems start. The example wax is Luxury Soy Wax CSI 464, rated up to 10% by the wax maker, so the ladder runs 6%, 7%, 8%, 9% and 10% — the top rung sits exactly on the ceiling and nothing goes above it. CSI's convention is that load is a share of the finished weight: oil = W × L, wax = W − oil.

Two things stand out. First, the spacing is fine enough to matter: each rung is 2 g of oil in a 200 g candle, which is well within what a 0.1 g-resolution scale can weigh consistently — check your own scale's resolution before you start. Second, the money moves in a straight line. Every percentage point of Sandalwood costs ₹9.04 more per 200 g candle once the wax it displaces is credited. If the new oil matches the control at 7% instead of 8%, that is ₹9.04 a candle, or ₹9,038.80 over a thousand candles.

The retest matrix when the load itself is open

The wick stays frozen through the ladder. If you move the wick while the load is also moving, you cannot tell which change did what. Choose the load first, then confirm the approved wick at that load; only if a burn line fails at the chosen rung do you open the wick question, as the bracketed-confirm post describes.

The two-phase protocol: screen wide in tins, confirm narrow in jars

Phase 1 is a scent screen. CSI's Golden Aluminium Tin has a published 85 g fill and comes in a pack of 12, which is exactly two tins per rung plus two control tins with the old sandalwood at its approved 8%. The screen ranks cold throw and a short, supervised hot-throw comparison; it does not judge wick behaviour, because the tin is not your production container and its wick is not your production wick. Phase 2 then pours the three rungs that bracket the screen's answer in your real 200 g jar, three candles each, beside three controls, and runs the full burn protocol.

Leave the cells blank and fill them in on the bench; the empty sheet is the point. The decision rule is in the last column: choose the lowest rung that passes every line. Not the strongest rung, not the old 8%, and never the ceiling by default. If no rung matches the control's throw, the oil is not stronger in wax after all — go to 4831. If the only rung that matches on throw fails a burn line, the load is not the answer on its own; the post on redesigning around a lower load covers what to adjust next.

The priced kit, and the cheaper way to run it

The totals are close — ₹4,613.12 against ₹4,686.18 — because the tins are an extra purchase. The real advantage of the two-phase route is not the rupees; it is that the burn-heavy work only happens on the three rungs that matter, and that the scent question is settled before the jars are poured. If you already hold tins or a cheap small container, the two-phase route is also the cheaper one. The tin's wick is your choice for a scent screen; CSI does not publish a wick size for it.

If you are choosing between sandalwoods rather than tuning one, Santal Noir is a darker, pricier concept (₹9.19 a gram at 100 g), and Sacred Sandal Ember was in stock only at 500 g on the 24 September 2026 pull — not a test size. Each would need its own ladder; do not borrow one oil's rung for another.

Release and record the new load

Write the result as a new formula, not an edit to the old one. The approved spec now reads: Sandalwood Fragrance Oil (as listed), supplier, order date, the chosen load as a share of finished weight — for example 7%, 14 g in 200 g — CSI 464 from a named bag, the approved wick, the jar, the ladder dates and the Phase 2 scores. Keep the unused Phase 1 tins as reference scent samples and two retained candles from the first production batch.

Then tell production that the number changed. The most common failure after a successful ladder is a batch poured at the old 8% out of habit. Put the new grams per candle on the batch sheet, not just the percentage. If the new load differs a lot from the old one, the lower-effective-load post covers whether the rest of the formula should be redesigned around it, and the cost-comparison post shows how to compare the old and new oils at their own loads.

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