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Fragrance (parfum)

Fragrance (parfum) in skincare: Scent. What it does on skin, how strong the evidence behind the claim actually is, the concentrations in normal use, who reacts to it, and where it stands in pregnancy and sunlight. On a label it appears as Parfum, Aroma, plus individually named allergens.

Preservatives, surfactants and fragranceScentEvidence: Strong

On the label: Parfum, Aroma, plus individually named allergens. Also called: Limonene, Linalool, Citronellol, Geraniol, Eugenol and others.

This is an ingredient reference, not a diagnosis and not a treatment plan. It describes what substances are and what the published evidence supports; it does not tell you what your skin has or what to put on it. A rash that spreads, hurts, weeps, does not settle, or comes with feeling unwell is a reason to see a doctor or pharmacist, not to change serum.

What it is

A single word on the label covering a mixture that may contain dozens or hundreds of individual substances, protected as commercial information. You cannot know from the label what is in it — with one important exception: the substances the EU has identified as fragrance allergens must be named individually once they exceed a threshold, which is why an ingredient list often ends with a run of names like limonene and linalool.

What it does on skin

It makes a product pleasant to use, which is not nothing: the moisturiser you enjoy is the one you apply twice a day. It also masks the smell of raw materials, which is why "unscented" products often contain a masking fragrance while "fragrance-free" ones should not. Fragrance provides no skin benefit whatsoever.

What the evidence is worth

Evidence: Strong

Fragrance is among the leading identified causes of allergic contact dermatitis in Europe, and fragrance mixes are standard components of the baseline patch-test series used in every contact-dermatitis clinic. That is the strongest kind of evidence in this whole dictionary: routine diagnostic data collected across many clinics over decades.

How it is used

For most people, no action needed. For anyone with eczema, rosacea, a damaged barrier or a history of reacting to cosmetics, choosing fragrance-free products is the single highest-value change available, and it costs nothing. For a rash that will not settle, fragrance is what a dermatologist will test for early.

Typical concentration in normal use: Usually under 1% in skincare. That is a description of the market, not a recommendation, and it is not a dose.

Who reacts to it

Allergic contact dermatitis, which can appear years into using a product you tolerated before — sensitisation is cumulative. It can also present away from where the product was applied: eyelid dermatitis from a hand cream or a hair product is a classic pattern that sends people hunting for a face-cream culprit that does not exist.

Pregnancy and breastfeeding

Generally considered fine

Not a pregnancy safety issue, though heightened sensitivity to smell in early pregnancy makes many people abandon scented products anyway.

Sunlight

More sun-sensitive

Some fragrance materials are photosensitising: expressed citrus oils, bergamot in particular, can cause a burn-like reaction in sunlight, and the resulting streaky brown marks can last for months. Perfume goes on clothing rather than on skin that will be in the sun.

Rules and labelling

The EU requires individual fragrance allergens to be named on the label above 0.001% in leave-on products and 0.01% in rinse-off products. The list originally covered 26 substances and was substantially expanded — to around eighty — by a 2023 amendment, with a transition period, so ingredient lists have been getting visibly longer for this reason and not because products became more complicated.

What it goes with, and what it does not

The useful pairing rule is negative: keep fragrance out of anything applied to broken, eczematous or freshly treated skin, where sensitisation is most likely.

One thing people get wrong

The myth is that natural fragrance is safer than synthetic. Essential oils are fragrance, and several of the substances that must be declared as allergens — limonene, linalool, citral, geraniol — are natural constituents of citrus, lavender and rose oils. Worse, they oxidise on contact with air into stronger sensitisers, so an old bottle of a natural product can be more allergenic than a new bottle of a synthetic one.

Sources: EU Cosmetics Regulation (EC) No 1223/2009 and its annexes, as published in the European Commission's CosIng database, for every statement about what is permitted, restricted or banned · opinions of the Scientific Committee on Consumer Safety (SCCS) and safety assessments of the Cosmetic Ingredient Review (CIR) for the concentration positions · standard dermatology reference material for mechanism, tolerability and contact-allergy patterns · checked 2026-09-06. Deep links are deliberately omitted where a stable public URL could not be confirmed.

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