How much Ambroxan should you use in a perfume, and how?

By Omer Siton, founder of PerfuMate · Updated 2026-10-06

Ambroxan is used from a trace to about a tenth of a perfume concentrate, and beyond that in deliberate overdoses: its maker, Kao, gives 0.1 to 10% as the dosage range, and four of PerfuMate's published accords use it at 5 to 12.6%. It is a crystalline solid, so it is usually weighed from a 10% solution. It is loud for an aroma chemical, 7 out of 10 on the catalog's strength scale, and the catalog gives it about 17 days on a blotter, so every decision about it is a decision about the drydown.

How much Ambroxan goes in a perfume?

Between a fraction of a percent and about 10% of the concentrate covers most perfumes; the figure depends on the job. The shares below are of the concentrate, before alcohol.

• A trace to a support, about 0.1 to 2%. Radiance and lift under a base, without an ambergris note anyone would name. The first formula on how to make perfume at home carries 1%: 1 g of a 10% solution in a 10 g concentrate.
• A structural dose, about 5 to 13%. Ambroxan is part of the idea. PerfuMate's published accords sit here: the Classic Amber Accord at 5.0%, the Solar Accord at 6.2%, the Skin Musk Accord at 10.3% and the Sea Breeze Accord at 12.6%.
• An overdose, 20% and beyond. The material becomes the perfume. The Ambergris Accord carries 31.5%, but that accord is meant for 5 to 20% of a concentrate, which brings Ambroxan back to 1.6 to 6.3% of the whole.

How much Ambroxan in 100 ml? For an eau de parfum at 18%: 100 ml of finished perfume weighs about 80 g, because alcohol weighs about 0.8 g per ml, so it holds 14.4 g of concentrate. Ambroxan at 5% of that concentrate is 0.72 g, weighed as 7.2 g of a 10% solution in perfumer's alcohol; that solution brings 6.48 g of alcohol, so add 6.48 g less alcohol to the bottle. The strength itself is your choice (perfume concentrations, explained). Raise Ambroxan in steps and judge each version on a strip the next morning, not in the first minutes.

How do I dilute Ambroxan, and what are Ambroxan crystals?

"Ambroxan crystals", "Ambroxan powder" and "Ambroxide cryst." are names for the same material in its normal form, a white crystalline solid. Kao's safety data sheet describes white flakes that melt at 67 to 77 °C, so it does not pour, and small amounts are far easier to weigh accurately from a solution:

1. Weigh 1 g of the crystals into a clean vial.
2. Add 9 g of perfumer's alcohol or dipropylene glycol (DPG): 10 g in all, a 10% solution by weight.
3. Cap it and swirl until it is clear; gentle warmth in the hand helps.
4. Label it with the name, "10%", the solvent and the date, as how to store perfume materials describes.

Every gram of the solution then carries 0.1 g of Ambroxan. The solvent matters later: an alcohol solution simply becomes part of the perfume's alcohol, while DPG stays in the bottle and lowers the real concentration unless you weigh more concentrate (DPG in perfume shows the arithmetic). For a perfume oil, dissolve the crystals in DPG or triethyl citrate before the carrier goes in, as how to make perfume oil explains. If a cold bottle drops crystals, warm it and swirl until clear before you weigh.

Ambroxan vs Ambrofix, Ambrox Super and Cetalox: what is the difference?

Ambroxan, Ambrofix, Ambrox Super and Orcanox are one molecule, ambroxide (CAS 6790-58-5), made by different houses; Cetalox carries a different CAS number in the catalog (3738-00-9) and smells drier and less sweet. Same molecule does not mean same bottle: production and purity differ, and the catalog describes each grade a little differently. All five sit at 7 out of 10 for strength.

Blotter figures are the catalog's sourced estimates for paper, not for skin. Asked for a stand-in for Ambroxan, the substitutes engine scores Ambrofix 100 and Ambrox Super 93, "the same molecule, sold under another name", and Cetalox 72. Two names often set beside Ambroxan are not ambroxides at all: ambrette is a natural musk from ambrette seeds (Ambrette Seed Essential Oil), and Hedione is a jasmine-floral heart material, compared on Iso E Super vs Ambroxan. Nor is Ambroxan a musk, though it often sits beside musks in skin scents such as the Skin Musk Accord.

Why can't some people smell Ambroxan or Iso E Super?

Usually specific anosmia, adaptation, or both. Specific anosmia is a blind spot for one molecule in an otherwise normal nose, and it is common: a study of 20 odors in a large group of people found that the chance of being anosmic to at least one approaches certainty, and that three months of smell training could often reverse it.

For Ambroxan there is now a molecular explanation. A 2025 study identified OR7A17, an odorant receptor tuned to (-)-ambroxide, and found non-working versions of it to be common, especially in East Asia; people without a working copy could still detect the molecule but found it less pleasant. So "I can't smell it" often means "I smell it weakly, or differently".

Iso E Super adds a third reason: it is genuinely quiet, 2 out of 10 on the catalog's scale against Ambroxan's 7. And with both, your own nose adapts to a smell that stays around you, so the wearer stops noticing it while others still can. Bench them on more than one nose, judge them on dated strips, and resist raising the dose every day.

Is there a natural alternative to Ambroxan?

No natural material smells like Ambroxan on its own. The closest natural routes are Labdanum absolute, which the catalog calls the closest natural material to the smell of ambergris, Clary Sage Absolute and Sclareol for the dry ambery side, ambrette seed for musky warmth, and real ambergris tincture, which is rare and illegal to trade in several countries (what is ambergris has the legal position).

Two facts complicate the word natural. Ambroxan starts from a natural material: Kao makes it from sclareol obtained from clary sage. And Givaudan makes its Ambrofix by fermenting sugarcane and calls it "100% naturally derived". Both are still single molecules made by chemistry or biotechnology, not essential oils or extracts, so whether they count as natural depends on the standard your brand or your customers follow. Sclareol, for its part, is an EU-declarable fragrance allergen with an IFRA purity specification (sclareol and IFRA).

Is Ambroxan restricted by IFRA?

No: in the IFRA 51st Amendment data that PerfuMate's calculator uses, no Category 4 standard limits Ambroxan (Ambroxan and IFRA), and it is not among the fragrance allergens that EU law requires on a label. The rest of the formula is still checked as usual.

On handling, Kao's US safety data sheet classifies Ambroxan as not hazardous under OSHA's GHS-based standard and reports it as non-irritating to skin and eyes in the standard tests, with a negative guinea-pig sensitization test. It is a flaky solid that can make dust, so avoid raising it or getting it in your eyes, and wear gloves as with any material. An IFRA result is a calculated reference check, not a safety assessment.

How do you make an ambergris accord with Ambroxan?

Start from a published formula and adjust it by smell: for 100 g of PerfuMate's Ambergris Accord, an untested starting point, weigh Ambroxan 30 g, Cetalox 18 g, Habanolide 14 g, Iso E Super 12 g, Labdanum absolute 10 g, Ambrettolide 6 g, Timberol 5 g, Ambrinol 3 g of a 1% dilution and Seaweed absolute 2 g of a 10% dilution.

The two dilutions bring 4.77 g of solvent, so the aromatic material is 95.23 g and Ambroxan is 31.5% of it. Pasted into the IFRA calculator at 18%, the accord as weighed making up 18% of the perfume, it is within every Category 4 limit: the line closest to its cap is Timberol, at 0.9% of the finished perfume against IFRA's 1.3% limit for its molecule, also sold as Norlimbanol, and Iso E Super lands at 2.16% against its 20% cap. Used as the accord's note intends, at 5 to 20% of a concentrate, it gives that concentrate 1.6 to 6.3% Ambroxan. Smell it at one hour and the next morning: the note promises an endless drydown, and the strip is where you check.

PerfuMate's IFRA calculator reads a line written "Ambroxan 10% in DPG" as one tenth Ambroxan, and the app corrects every line for the strength of the bottle it is weighed from and checks the Category 4 limits while you compose; when a bottle runs out, the substitutes engine ranks what on your own shelf can stand in. Start a formula, free.

Sources: Kao Chemicals, AMBROXAN and its US safety data sheet; Givaudan, Ambrofix; Takase et al., An odorant receptor for a key odor constituent of ambergris, Communications Biology 8, 792 (2025); Croy et al., Specific anosmia as a principle of olfactory perception, HNO 64 (2016); Regulation (EU) 2023/1545; IFRA Standards OTNE and 1-(2,2,6-Trimethylcyclohexyl)-3-hexanol, from the IFRA Standards Library.