Can I Assign the Same Shelf Life to Every Fragrance in My Collection or Should Each Formulation Be Assessed Separately?

Why each formulation needs its own assessment

A five-scent collection can look like one product: the same jar, the same wax, the same lid, the same label. From the outside it is tempting to give it one shelf life. Inside each jar, though, is a different blend of materials. Mint, citrus and green openings lean on quick-to-leave materials; sandalwood and other woody bases lean on slow ones. A Sandalwood candle and a Juicy Orange candle on the same shelf can therefore change at different speeds, and in different ways: one loses strength, another loses its opening, a third simply settles.

The same logic applies within a single fragrance. Sandalwood in CSI 464 in a lidded 150 g jar is not the same formulation as Sandalwood in CSI 468 in an open 200 ml matte jar. Different wax, surface area and pack can change how the scent holds. When you ask “can every fragrance share a shelf life?”, the more precise question is “can every formulation share one?” — and the honest starting point is that each has to be tested before anyone knows.

None of this can be read from a product page. CSI fragrance-oil pages publish no shelf life or storage data, and the 60-month figure on the CSI 464 and 468 pages describes stored wax, not scented candles. The results have to be your own.

A worked collection: five scents, five results

Take an example collection — Sandalwood, Jasmine, Bergamot Amber, Eucalyptus Spearmint and Juicy Orange — all 200 g at 8% of total weight in the same wax and lidded jar. Each has been aged in real storage, three candles per point, compared blind with a fresh reference. The results below are invented for illustration.

Now try the tempting shortcut. The average of the five results is (180 + 120 + 120 + 90 + 60) ÷ 5 = 114 days. Print “best within 114 days” — or, rounded to sound tidy, “four months” — and every Juicy Orange candle carries a claim almost twice as long as its own test, while every Eucalyptus Spearmint candle overclaims by about a month. The average describes no candle in the box. It is the one option that is always wrong.

Three honest ways to label a collection

In the banded version, Eucalyptus Spearmint and Juicy Orange sit in the fresh band, and the band takes Juicy Orange’s 60 days because a band, like a collection, is limited by its weakest member. Sandalwood, Jasmine and Bergamot Amber sit in the warm band at 120 days, the shorter of their results.

Choosing the right approach for your business

Many small collections start with a single claim set by the weakest scent, then move to bands as testing deepens. That progression is healthy: each step is backed by more evidence than the last.

Whichever approach you choose, review it after every test cycle. A scent that passes a longer point on a second lot may move bands; one that slips on a new lot moves back. The labels follow the results, never the other way round.

Explaining different periods to retailers and customers

Makers sometimes fear that different periods on different scents will look like a quality problem. In practice, a short plain explanation reads as care. Retailers in particular appreciate knowing which candles to sell first.

For retailers, a one-page sheet works well: each scent, its period from the manufacturing date, the storage condition it was tested under, and a request to keep lids on and stock out of window sunlight. Add a simple rotation note — sell fresh-band scents before warm-band ones from the same delivery. If they hold stock on sale or return, agree when older candles come back.

For customers, the label does the work: the period, the date or batch code, and “store lidded, away from heat and sunlight”. If you want a line of explanation on your website, keep it factual — fresh, citrus and mint scents are at their brightest sooner, so they carry a shorter best-within period — without implying the others never change.

What to avoid is letting a retailer believe the whole range shares the longest period because one scent earned it. That is the same averaging error, made at the shop counter instead of on the label.

What separate assessment means for production and buying

Separate results are not just for labels; they change how far ahead you can make each candle and how much oil you should hold. In the example, a maker could pour Sandalwood for a festive season well in advance, while Juicy Orange should be poured close to sale and in smaller runs.

Oil purchases follow the same logic. If Juicy Orange candles are only supported to 60 days, holding months of its oil serves nothing. At an example 250 candles a month, one month’s oil is 250 × 16 g = 4,000 g, which is four 1 kg packs: 4 × ₹7,499.00 = ₹29,996.00. Buy for the next pour or two, not for the year. Sandalwood, with a longer supported hold, can justify a slightly larger order — note that on 8 October 2026 its 500 g pack at ₹2,513.40 and 1 kg pack at ₹5,026.80 were in stock while the smaller packs were not.

For every oil, ask CSI on WhatsApp (+91 7397976926) for the IFRA certificate, MSDS and any storage or shelf-life guidance for that lot, and keep it in writing. It will help you store each oil well. It will not, and should not, decide the period on any candle’s label.

Where this page fits

CSI already has guides that cover parts of this question. This page answers one fragrance-ageing decision; these cover the neighbouring questions:

Three things to buy for this decision

Frequently asked questions