What Does “Parfum” Mean in Deodorant and Soap?

By James Allan, Smelly Men. Last reviewed 31 July 2026.

If you've ever turned over a bottle of shower gel, deodorant, or moisturiser, you've seen the word "parfum" or "fragrance" sitting in the ingredients list. It's probably the least explained word on anything you own.

Fragrance and preservatives are consistently the two most commonly identified allergens in patch-test studies of cosmetic reactions, and a UK population study found that 23% of women and up to around 1 in 5 men have a reaction to a personal care product in any given year (Willis et al., British Journal of Dermatology, 2001). We've written before about why so many people end up at the GP with a skin complaint. Given how common that is, it's worth understanding what that one word on the label is actually allowed to hide.

The word doing a lot of hiding

"Parfum" (or "fragrance") is a legally permitted umbrella term. Cosmetic regulation lets a brand group dozens of individual fragrance chemicals under that single word, without listing any of them separately. It's treated as a trade secret, the same way a recipe might be.

That's been the rule since 1999, when the EU first required 26 specific fragrance ingredients, the ones with the clearest record of causing allergic reactions, to be named individually on the label above a certain concentration. Everything else in a fragrance blend could still hide behind "parfum".

EU regulation is catching up, today

That's changing substantially, and only in the EU. From 31 July 2026, EU Regulation 2023/1545 expands the list of fragrance ingredients that must be individually named from 26 to around 80. The UK has not adopted this. UK-sold products still only need to individually name the original 26, and there's no confirmed timeline for that to change.

Worth being clear about what that means: this isn't a UK law that's just come into force. It's an EU rule, for the EU market. But the reason the EU decided 56 more substances were worth naming individually doesn't stop applying at the Channel. If a fragrance chemical is common enough to cause reactions to warrant disclosure in Paris or Dublin, it's the same chemical in London. The regulation is EU-only. The underlying reason for it isn't.

Here's the bit that keeps us honest

It would be easy to stop there and say "natural is safer". That's not quite true, and we're not going to pretend it is.

28 of the roughly 80 newly regulated fragrance allergens are natural extracts, not synthetic chemicals. Tea tree oil, ylang ylang, lavender, the exact essential oils many natural brands use, including us, are tested in standard fragrance allergy panels alongside synthetic ingredients. Going natural doesn't remove the allergens. It just means they have names.

That's the actual difference. Our soap and deodorant list every essential oil individually and flag the recognised naturally-occurring allergens (limonene, linalool, citral, geraniol), exactly what the new EU rules now require of everyone else.

An uncomfortable truth worth being vigilant about

Here's the bit that's genuinely worth sitting with. "Natural" on the front of a bottle and "parfum" in the ingredients aren't necessarily in conflict, plenty of proper essential oil blends are still legally required to be labelled that way. But it means the word "parfum" can just as easily be hiding a handful of essential oil constituents as it can be hiding genuinely synthetic fragrance chemicals, alongside marketing that talks exclusively about being pure and plant-based.

That's not illegal. Nobody's breaking a rule. It's just exactly the kind of gap that's easy to miss unless you know to look for it, and not every brand that talks about natural ingredients is equally willing to show you what's actually inside "parfum" when you ask.

Questions worth asking, on any label, ours included

A short checklist, genuinely useful whoever's soap or deodorant you're holding:

• Does the ingredient list name every essential oil individually, or does the scent rely on "parfum" or "fragrance" doing the work?
• If "parfum" appears, can you find out what's actually in it without emailing customer service and waiting a week?
• Are the disclosed components marked as naturally occurring in essential oils, or do a few look more like synthetic aroma chemicals sitting quietly next to "natural" marketing?
• Would the brand still be comfortable calling itself natural if it opened up "parfum" and showed you exactly what was in there?

We'd rather you asked us these questions directly than took our word for it. Check our labels. Then check everyone else's.

The bit that actually surprised us

Some of the chemicals used to make synthetic fragrance last longer on skin are phthalates. Peer-reviewed research from Harvard's EARTH study found women undergoing IVF with higher phthalate metabolite levels produced fewer mature eggs. Evidence on implantation or live birth specifically is more mixed. It's also genuinely common for IVF clinics to ask patients to avoid scented products around egg collection and embryo transfer.

We want to be precise here: this research concerns phthalate exposure in people already undergoing fertility treatment. It isn't evidence that switching to natural soap helps anyone conceive, and we're not going to imply that it does.

What we actually do about it

Our soap and deodorant have never used synthetic fragrance. We got there first, not because we saw the regulation coming, but because listing what's actually in the bottle always seemed like the obvious thing to do.

We've nothing to hide. Never have.