I Changed My Fragrance Blend Ratio from 50:50 to 70:30 — Is That Enough of a Formulation Change to Justify Another Burn Test?

What actually changed: the per-candle arithmetic

A ratio is a share of the blend, and the blend is a share of the candle. At 8% of a 150 g candle the blend is 12 g (and 138 g of wax), so the ratio splits those 12 g. The load applies to the combined blend, never to each component; it stays 8% here, so the total oil does not move, only its make-up.

That 40% is why the question deserves a burn. A 20-point shift reads as modest; per candle it adds 2.4 g of the component most commonly linked to a smaller flame or more carbon, and removes the same weight of the lighter, citrus-topped one. The same arithmetic on a much smaller change (10% of a blend, 1.2 g in a 150 g candle) is the small-blend-change post; why the share of a minor component matters more than the points suggest is the same idea.

Ceilings: Dark Vanilla states "candles (6-10%)", Bergamot Amber "6-10% for soy wax candles", CSI 468 "Fragrance Load Up to 13%". The blend's planning limit is the lowest stated maximum, 10%. A ratio change inside 8% leaves you well inside it; the ceiling only matters if you raise the load to make up for a lost note, and that is a load change with its own wick question.

When a ratio change needs no new wick purchase

Here is the rule we would use, labelled as judgement because no data set behind it exists for CSI oils. It decides one thing: whether the confirm order includes a second wick arm. It never decides whether to confirm at all.

Why 10 points? It is roughly where a shift stops being a tweak in grams (1.2 g of a 12 g blend in a 150 g candle) and starts to change which component dominates. Why does direction matter? Because the tendency linked to heavier fuel runs one way, toward too little flame. A shift toward the lighter component is more likely to leave the approved wick fine or slightly hot, and a hot reading is answered by the rung you already know is below, not by a new purchase. None of this replaces the three candles. How a business decides between a quick confirmation and a complete revalidation across many SKUs is the change-control hub; this page applies its quick level to one blend.

The confirm order, line by line

The worked example: your 7.5 cm inside jar (no in-stock CSI jar is 7.5 cm across: the three listings that state 7.5 cm give a width or an unspecified diameter, not an inside one, and all three are out of stock on 1 October 2026), 150 g at 8% of total weight, CSI 468, 50:50 approved on Eco C2 with three candles through full life. The 7.5 cm pool is 44.18 cm² on the inside diameter. Six candles need 50.4 g of Dark Vanilla, 21.6 g of Bergamot Amber (72 g of blend) and 828 g of wax.

Two cheaper variants. If you want no re-pour reserve, Dark Vanilla 50 g + 15 g (₹540.00, 65 g) covers six candles and leaves 14.6 g, 1 more candle: the order becomes ₹940.00, ₹250.00 less, with no room to repeat an arm. And if the rule above says no new wick (a 60:40 tweak, say), the confirm is three C2 candles: Dark Vanilla 50 g and Bergamot Amber 15 g (₹515.02) cover 25.2 g and 10.8 g, leaving 24.8 g and 4.2 g.

Materials consumed by the six candles: ₹1,121.64, of which the Cotton Braided arm is ₹564.66. One 70:30 candle costs ₹185.66 on C2 and ₹188.22 on Cotton Braided (oil ₹86.52, wax ₹89.70): excluding your jar, labour, freight, packaging and GST.

Pouring and reading six candles

How far down a confirm must burn before it counts is the acceptance-depth post. If the result surprises you, keep the remaining pre-mixed blend sealed: it is the exact fuel the candles were poured with.

From confirmed ratio to production quantity

Size every line from your production: wicks = candles × wicks per candle × (1 + allowance) (5% is our worked-example allowance) and, for each oil, grams = candles × blend grams × share.

Notice which line is bigger: at 1 kg prices the ratio change itself adds ₹5.30 of oil per candle (₹78.50 → ₹83.80), more than twice the ₹2.56 a Cotton Braided wick adds. If 70:30 is a scent decision you are sure of, the wick is the small part of its cost. Reorder point: daily use × your lead time + safety stock; at 84 wicks a month that is about 2.8 a day, and with a 10-day order-to-bench time (yours; CSI publishes no lead times or stock depth) plus a week of cover, reorder at 48.

What to buy, and what to skip

Five items, chosen on page statements, price and stock on 1 October 2026. CSI publishes no wick-performance data, so nothing here is ranked on burn results. Candle counts use 8.4 g of Dark Vanilla and 3.6 g of Bergamot Amber per 150 g candle at 8%, 70:30, and 12 g for a straight 150 g candle.

Skip for this confirm: a three-rung ladder (the ratio changed, not the oils, the jar or the wax); Vanilla Bean in place of Dark Vanilla (priced the same, but a different oil, so a new blend); and the C1 20-pack unless you are moving toward Bergamot Amber, not away from it.

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