How much Benzaldehyde can you put in a perfume?

IFRA standard: Benzaldehyde · Category 4, 51st Amendment

0.25%

of the finished perfume, at most

Under the IFRA Standards (51st Amendment, Category 4: fine fragrance on skin), Benzaldehyde may make up at most 0.25% of the finished perfume. In an eau de parfum at 18%, that is at most 1.38% of your concentrate: 1.38% of every 100 g.

Benzaldehyde is also one of the EU's declarable fragrance allergens: above 0.001% of a leave-on product it must be named on the label.

Check your own formula in the free IFRA calculator

What the limit means at your strength

The limit is on the finished perfume, so the stronger the perfume, the less Benzaldehyde its concentrate can hold. If nothing else in the formula carries it:

Perfume strength	Most Benzaldehyde in the concentrate
Cologne, 5%	5%
Eau de toilette, 10%	2.5%
15%	1.66%
Eau de parfum, 18%	1.38%
20%	1.25%
Extrait, 25%	1%

Which materials contain Benzaldehyde?

Sold as Benzaldehyde itself, counted in full:

Benzaldehyde

It also arrives inside other materials. The limit is on the total, so the calculator adds every source together. The largest carriers in PerfuMate's catalog, by their typical composition:

Material	Typical content	Alone at 18%, at most
Bitter Almond Essential Oil FFPAnatural	97%	1.43% of the concentrate
Nut (F-TEC)	25%	5.55% of the concentrate
Cherry (F-TEC)	12%	11.5% of the concentrate
Cinnamon (F-TEC)	2%	69.4% of the concentrate
Hyacinth Absolutenatural	2%	69.4% of the concentrate
Cassia Essential Oilnatural	1%	no limit on its own
Cassie Absolutenatural	1%	no limit on its own
Mimosa Absolutenatural	1%	no limit on its own

39 materials in the catalog carry Benzaldehyde; the calculator counts every one of them.

Shares are the catalog's typical values. A real batch varies with origin and season, and your supplier's analysis (GC-MS or certificate of analysis) is the real figure.

A worked example

A 100 g concentrate, bottled as an eau de parfum at 18%:

Material	Weighed
Benzaldehyde	0.69 g
Bitter Almond Essential Oil FFPA	0.86 g
Ethylene Brassylate no IFRA limit	98.45 g

Benzaldehyde alone brings 0.124% Benzaldehyde to the finished perfume, and Bitter Almond Essential Oil FFPA adds 0.15%. Each looks modest, but the perfume holds 0.274% against a limit of 0.25%: 1.1 times the limit. To bring it inside on its own, the calculator cuts Benzaldehyde from 0.69 g to 0.628 g and Bitter Almond Essential Oil FFPA from 0.86 g to 0.782 g. Or keep the formula and bottle it weaker: the highest strength inside every limit is 16.4%.

Open this example in the IFRA calculator

Or paste these lines into the calculator:

Benzaldehyde  0.69 g
Bitter Almond Essential Oil FFPA  0.86 g
Ethylene Brassylate  98.45 g

Questions

Is Benzaldehyde banned in perfume?

No. IFRA restricts it: at most 0.25% of a fine fragrance (Category 4).

How much Benzaldehyde can I use in an eau de parfum?

At 18%, at most 1.38% of the concentrate, if nothing else in the formula carries Benzaldehyde. Every other source counts toward the same total.

Does Benzaldehyde from essential oils count?

Yes. The limit is on the total in the finished perfume, whatever brings it: Bitter Almond Essential Oil FFPA typically carries 97%. The calculator adds every source.

Does this limit apply to candles or soap?

No. This is Category 4, fine fragrance on skin. Other products sit in other IFRA categories with other limits, which these pages and the calculator do not cover.