In this article
- What ‘fragrance’ and ‘parfum’ mean on a label
- Where you will find fragrance
- The labelling loophole: how one word hides a formula
- Why people avoid fragrance
- What regulators and the evidence say
- The debate
- Who should avoid fragrance
- How to spot fragrance on a label
- Better alternatives: scent without the secret formula
- Frequently asked questions
“Fragrance” — listed as fragrance, parfum or aroma — is the one entry on a personal-care label that is not a single ingredient at all. It is a complete scent formula, and in most countries the law lets brands keep every chemical in it secret: a single fragrance can contain dozens to hundreds of individual aroma chemicals. People avoid it chiefly because fragrance is one of the most common causes of cosmetic contact allergy — and because, thanks to that secrecy, there is no other way to avoid the specific chemicals inside it.
What ‘fragrance’ and ‘parfum’ mean on a label
Every other line on an ingredient list names a substance. This one names a recipe. A fragrance is a finished concentrate — built by a perfumer from natural extracts and lab-made aroma molecules, plus solvents and fixatives that make the scent last — which a brand buys from a fragrance house and doses into its product. Because the concentrate is the fragrance house’s commercial property, labelling law in most countries allows the whole mixture to be declared with a single umbrella word: fragrance on US labels, parfum in the international INCI naming used in Europe and Australia, and sometimes aroma.
What is inside varies enormously. Published research describes a single fragrance as “a complex mixture of several dozen to several hundred chemicals”, drawn from a palette of nearly 3,000 compounds documented as fragrance ingredients. Alongside the aroma chemicals themselves, the blend can carry functional passengers — most notably phthalates such as diethyl phthalate, used as fixatives to slow evaporation. None of this needs to appear on the label.
It is also worth separating two questions this site treats in two articles. This explainer is about the label word itself — what it legally covers and how to read it. Our companion piece on synthetic fragrance looks at the chemistry instead: how lab-built aroma molecules compare with natural ones, and why “natural” scent is not automatically gentler.
Where you will find fragrance
- Leave-on products — moisturisers, body lotions, deodorants, sunscreens, makeup and hair styling products, where the scent sits on skin for hours
- Rinse-off products — shampoos, conditioners, body washes and soaps
- “Gentle” and baby products — scented wipes and baby lotions carry parfum more often than parents expect; the word is the tell, not the marketing
- Products that do not seem scented — a masking fragrance can be added purely to neutralise the smell of the base ingredients, and may still be declared only as “fragrance”
- Beyond the bathroom — laundry detergents, fabric conditioners, cleaning sprays, scented candles and air fresheners, which in some jurisdictions face even weaker disclosure rules than cosmetics
The labelling loophole: how one word hides a formula
The secrecy is not an oversight; it is written into the rules. In the United States, the Fair Packaging and Labeling Act protects trade secrets, and the FDA’s labelling rules (21 CFR 701.3, in the FDA Cosmetic Labeling Guide) expressly permit fragrance and flavour compounds to be declared simply as “fragrance” and “flavour” instead of by their component names. The same rule allows even a masking agent — a fragrance added to hide a product’s base odour — to be declared as “fragrance”. Australia’s rules follow the same shape: a 2025 peer-reviewed review of global fragrance regulation notes that Australian labels must carry the term “fragrance” or “perfume”, but “there is no obligation to specify the specific components used to create the fragrance”.
How much does the word actually hide? An emissions analysis cited in Steinemann’s 2016 study in Air Quality, Atmosphere & Health tested 37 fragranced consumer products and detected more than 156 volatile compounds emitted across them — yet fewer than 3% of the volatile ingredients were disclosed on the product labels, websites or safety data sheets. In other words, the ingredients you can read are a small fraction of the ingredients you are exposed to, and the gap is legal.
The rationale for the rule is genuine: a scent is a creative work and a commercial asset, and a full ingredient list would let competitors reconstruct it. The cost is borne by a specific group — people who react to something inside the mixture, and the doctors trying to work out what. Neither the consumer nor their dermatologist can identify the culprit chemical from the label, which is why “just avoid fragrance entirely” is so often the practical advice.
Why people avoid fragrance
Allergy is the documented core of the case. Fragrance mixtures are consistently among the most frequent causes of allergic contact dermatitis identified in patch-test clinics, a point the clinical literature and a 2025 global review of fragrance regulation both treat as settled. Sensitisation is a one-way door: the immune system can become reactive after years of uneventful use, so a long-trusted product can start causing eczema in adulthood.
Sensitivity in the wider population appears common, though the data is self-reported. In Steinemann’s nationally representative US survey of 1,136 adults, 34.7% reported health problems when exposed to fragranced products — most often respiratory problems (18.6%), mucosal symptoms (16.2%), migraine headaches (15.7%), skin problems (10.6%) and asthma attacks (8.0%). Survey respondents are reporting their own experience rather than a clinical diagnosis, and we present the figure that way — but even treated cautiously, it describes a lot of people for whom scent is a practical problem, not a preference.
The hidden passengers matter to some shoppers. Because nothing is disclosed, avoiding the word is the only way to avoid whatever a particular formula contains — phthalate fixatives, synthetic musks, or any specific allergen a person has been patch-tested against. For this group the objection is not to any one chemical; it is to being unable to know.
What regulators and the evidence say
The European Union runs the most developed regime. The umbrella word is allowed, but specified fragrance allergens must be named individually on the label when present above very low thresholds — 0.001% in leave-on products and 0.01% in rinse-off products. In 2023, Commission Regulation (EU) 2023/1545 added 56 further allergens to the labelling list, taking the total past 80; products that do not comply may no longer be placed on the EU market after 31 July 2026, with stock already on shelves allowed until 31 July 2028. The Commission is explicit about the philosophy: naming an allergen helps sensitised consumers avoid it, and “an ingredient appearing in the list does not mean that the product is unsafe”.
The United States still permits the single blanket word, but the direction of travel is set: the Modernization of Cosmetics Regulation Act (MoCRA) directed the FDA to draw up a list of fragrance allergens for disclosure, a step the 2025 global review records as in progress. Australia, as noted above, requires the umbrella term and not its components.
The honest evidence summary: allergy to fragrance ingredients is well documented and is the reason allergen labelling exists; non-disclosure is a matter of legal record; and claims that extend beyond allergy and sensitivity — to hormone effects or systemic illness from cosmetic exposure — rest on laboratory findings, emissions studies and self-reported surveys rather than demonstrated outcomes at consumer doses. Both halves of that sentence are worth keeping.
The debate
The regulators’ and industry position
Trade-secret protection for fragrance formulas is deliberate law, not a drafting accident: the US Fair Packaging and Labeling Act states that nothing in it requires a trade secret to be divulged, and the FDA’s rules implement exactly that. On this view, safety is managed by assessing the finished formula and industry standards rather than by publishing recipes, and the EU shows the proven risk — allergy — can be handled by naming allergens without forcing full disclosure of a perfumer’s work.
The critics’ position
The Environmental Working Group — an advocacy organisation, and labelled as such here — tells consumers to read “fragrance” as “hidden chemicals”, pointing to phthalate fixatives and fragrance’s place among the top allergens. Researchers add the disclosure arithmetic: fewer than 3% of volatile ingredients emitted by tested products were disclosed anywhere a consumer could read them, and roughly a third of surveyed adults report health problems around fragranced products. A secret formula, critics argue, asks the reactive minority to absorb the cost of everyone else’s scent.
Who should avoid fragrance
Avoidance is not a duty for everyone — for most people fragrance is simply a pleasure in a product. It becomes a practical priority for:
- People with eczema or a patch-test diagnosis involving fragrance — for them, removing fragrance is usually the single highest-yield label change
- People whose asthma, migraines or rhinitis are triggered by scent — the survey data above suggests they are far from rare
- Anyone running a dermatologist-guided elimination trial for unexplained dermatitis, where fragrance is typically the first category removed
- Parents choosing leave-on products for babies, such as wipes and lotions — many choose fragrance-free simply because infant skin is thinner and the scent serves the adult, not the child
If none of those describe you, the decision is genuinely a preference — and the next two sections are about making it an informed one either way.
How to spot fragrance on a label
- Fragrance, Parfum, Aroma, Perfume — the umbrella terms, usually near the end of the ingredient list
- Named individual allergens (chiefly on EU labels): linalool, limonene, geraniol, citronellol, eugenol, coumarin, citral and their relatives — the EU requires these to be declared individually above tiny thresholds, whether they come from a synthetic blend or an essential oil
- Botanical oil names such as Lavandula angustifolia oil — essential oils are scent ingredients too, and their allergens count for reactive skin
- “Unscented” on the front, “parfum” on the back — that combination means a masking fragrance is present; “unscented” describes the smell, not the formula
- “Fragrance-free” plus a clean list — the reliable pattern is a fragrance-free claim and no fragrance, parfum or aroma anywhere in the ingredients
Better alternatives: scent without the secret formula
Going fragrance-free no longer means accepting clinical-smelling basics. The main routes:
- Genuinely fragrance-free ranges — pharmacy brands formulated for eczema and sensitive skin are fragrance-free by design; our guide to moisturisers without fragrance works through the shelf
- Disclosed scent — EU-labelled products that name their allergens, and the minority of brands that voluntarily publish their full fragrance composition, let you avoid specific chemicals instead of the whole category
- Essential-oil scenting with eyes open — a different profile, not an allergen-free one: linalool and limonene are declared allergens in their own right, and oxidised oils are more sensitising than fresh ones. Patch-test first
- Move the scent, keep the pleasure — many sensitive-skin owners keep fragrance in rinse-off products, hair or clothing-level scent and run their leave-on facial skincare fragrance-free; short contact time is a real variable
Pair fragrance-free basics with the barrier-supporting ingredients in ingredients to look for — ceramides in particular — and the stripped-back feel most people expect from fragrance-free products largely disappears.
Frequently asked questions
What does ‘parfum’ mean on an ingredient list?
It is the standard INCI name for a fragrance mixture — the same thing US labels call ‘fragrance’. It is not a single chemical but a complete scent formula, listed under one word because fragrance formulas are protected as trade secrets.
How many chemicals can hide behind the word ‘fragrance’?
Published research describes a single fragrance as a mixture of several dozen to several hundred chemicals, blended from a palette of nearly 3,000 documented fragrance ingredients. The exact contents of any one product’s fragrance are not disclosed on the label.
Is the fragrance in cosmetics dangerous?
The best-documented problem is allergic contact dermatitis, which affects a minority of users and is the reason the EU requires individual allergens to be named. Broader health claims rest largely on self-reported surveys and laboratory studies and remain contested. The core, undisputed complaint is non-disclosure: nobody can tell from the label what is in the mixture.
What is the difference between ‘fragrance-free’ and ‘unscented’?
Fragrance-free means no fragrance material was added for scent. Unscented means the product has no noticeable scent, which may be achieved with a masking fragrance — US labelling rules expressly allow masking agents to be declared as ‘fragrance’. For avoidance, fragrance-free plus no ‘parfum’ in the ingredient list is the reliable combination.
Do European labels disclose more than US or Australian ones?
Yes. EU law requires more than 80 specified fragrance allergens to be named individually above very low thresholds (0.001% in leave-on, 0.01% in rinse-off products). The US still permits the single blanket word, though its 2022 cosmetics law directed the FDA to draw up an allergen disclosure list. Australia requires the umbrella term ‘fragrance’ or ‘perfume’ but not its components.
I react to scented products. How do I avoid fragrance completely?
Choose products whose ingredient list contains no fragrance, parfum or aroma; treat ‘fragrance-free’ front claims as a prompt to verify the back label; include laundry products, which sit against skin all day; and patch-test new products. If reactions persist, a dermatologist can patch-test for the specific allergens involved.
Checked against US FDA labelling rules, European Commission, peer-reviewed literature (Steinemann 2016; Rana et al. 2025) and the EWG Skin Deep database (an advocacy source) · Last updated 2026-10-22 · How we assess ingredients
Sources (6)
- US FDA — Cosmetic Labeling Guide: declaration of fragrance and trade-secret ingredients (21 CFR 701.3)
- European Commission — Fragrance allergens labelling (Regulation (EU) 2023/1545)
- Steinemann A (2016) — Fragranced consumer products: exposures and effects from emissions, Air Quality, Atmosphere & Health
- Rana P et al. (2025) — Regulatory frameworks for fragrance safety in cosmetics: a global overview, Toxicological Research
- Environmental Working Group — Ask EWG: What is “fragrance”? (advocacy source)
- EWG Skin Deep cosmetics database
