Fragrance-free and unscented are two different claims on the same shelf

Most explanations of fragrance labelling stop at the point where it starts to matter. This one carries on.

The two claims are not synonyms

Fragrance-free generally indicates that no fragrance materials were added to the formula for the purpose of giving it a scent. Unscented usually means the finished product does not smell of anything in particular, which is a statement about the outcome rather than the contents.

Achieving that outcome often requires a masking fragrance to neutralise the natural odour of the raw materials, especially oils and certain actives. So an unscented product can legitimately contain fragrance compounds while a fragrance-free one should not. Neither phrase is tightly regulated in every market, which makes reading the ingredient list more reliable than reading the front of the pack.

What the word fragrance conceals

On an ingredient list, fragrance, parfum or aroma stands in for a blend that may contain dozens of individual materials. This grouping exists because scent compositions have historically been treated as trade secrets, and the practice is permitted in most jurisdictions. European rules require a set of known allergenic fragrance components to be named separately once they exceed defined thresholds.

At the strengths actually sold, that is why some labels list linalool, limonene, geraniol or citral after the word parfum, which is genuinely useful information. Those named components are among the most frequent culprits in clinical patch testing for cosmetic reactions.

Essential oils are fragrance

Marketing frequently positions essential oils as an alternative to fragrance, when chemically they are complex mixtures of exactly the same kinds of molecules. Citrus oils, lavender, ylang ylang and tea tree all appear regularly among reported contact allergens.

Some citrus oils are also photosensitising unless the relevant compounds have been removed, which matters in leave-on daytime products. Being plant-derived says nothing about tolerability, since the immune system responds to molecular structure rather than to provenance. A product scented entirely with essential oils is a scented product, and reactive skin should treat it as such.

Why fragrance is in there at all

Raw materials in skincare frequently smell unpleasant, from fatty acids that read as rancid to sulphur-adjacent notes in certain actives. Scent also drives purchasing and repeat use more powerfully than almost any other sensory property, which manufacturers understand well. A product that smells lovely is a product people finish, and finishing a sunscreen is arguably better than owning a perfect unfinished one.

On the ingredient list, so the case against fragrance is about risk for reactive skin, not a general moral position about formulation.

For most people with untroubled skin, fragrance is a preference rather than a hazard.

Who should actively avoid it

Anyone with eczema, a history of contact dermatitis or a diagnosed fragrance allergy has a clear reason to choose fragrance-free formulas. Skin that is currently compromised, whether from over-exfoliation, a procedure or a flare, is more permeable and more likely to react. The eye area and the neck are frequent sites of fragrance reactions, partly because the skin is thinner and partly because product migrates there.

After four to six weeks, if unexplained irritation keeps recurring across products, fragrance is one of the first variables worth eliminating systematically. Persistent or severe reactions should be assessed by a doctor, since formal patch testing identifies specific allergens that guesswork cannot.

Reading a label like a sceptic

Scan the end of the list, where fragrance and its named allergen components usually sit alongside preservatives and colourants. Look for the word parfum in products marketed as pure, natural or sensitive, which happens more often than the packaging implies. Compare two products from the same range, since a fragranced and fragrance-free version often differ in almost nothing else.

Beware of the phrase no artificial fragrance, which leaves natural fragrance materials entirely available to the formulator. The list is the only part of the packaging with regulatory force behind it, and everything else is copywriting.

The takeaway

If fragrance is a concern for you, ignore the front of the box and read for parfum at the bottom of the list.

Skin changes slowly. Anything promising otherwise is selling the promise.