Geraniol
Geraniol is a sweet, rose-scented compound found in rose and citronella oils and used widely as fragrance. It is one of the fragrance allergens the EU requires to be named on cosmetic labels and a recognised cause of allergic contact dermatitis, so it is flagged for fragrance allergy and sensitive skin.
Geraniol occurs naturally in rose, geranium, and citronella oils and gives many products a soft floral note; it is also used in some insect repellents.
It is listed in Annex III of EU Regulation 1223/2009 and must be declared by name above 0.001% in leave-on and 0.01% in rinse-off products. Geraniol is an established fragrance contact allergen, so people who patch-test positive should avoid it, and it can irritate sensitive or eczema-prone skin.
Who this affects
Caution
- Fragrance allergy: A labelled EU fragrance allergen; a recognised contact sensitiser.
- Sensitive skin & eczema: A fragrance-derived allergen that can irritate reactive or eczema-prone skin.
Frequently asked questions
Geraniol is permitted in EU cosmetics but is regulated as a restricted substance under Annex III of the Cosmetics Regulation (EC) No 1223/2009. It is acceptable at controlled levels, though it is a recognised fragrance allergen that can cause skin reactions in sensitised people. This is a regulatory position, not medical advice; if you have reacted to fragranced products, a dermatologist and patch testing are the authoritative guide.
EU law requires established fragrance allergens, including geraniol, to be named individually rather than hidden under "parfum." Under Regulation (EU) 2023/1545 amending Annex III, it must be declared above 0.001% in leave-on products or 0.01% in rinse-off products. The separate listing lets fragrance-allergic consumers identify and avoid it.
Yes. Geraniol is a fragrance-mix component and a well-recognised contact allergen that can trigger allergic contact dermatitis in sensitised individuals, typically on the face, eyelids and hands. It is a "prehapten" that becomes more allergenic when it oxidises on exposure to air. Once someone is sensitised the allergy is usually life-long, and avoidance is the main management strategy.
It can be either: geraniol occurs naturally in essential oils such as rose, citronella and geranium, and is also made synthetically, so cosmetic databases classify its origin as "synthetic/plant." Because it is plant-derived or lab-made rather than animal-derived, geraniol itself is not an animal ingredient. Whether a finished product is vegan also depends on its other ingredients and the brand’s policy.
Not necessarily for everyone, but caution is reasonable. Fragrance ingredients are among the more common causes of allergic contact dermatitis, and people with eczema or broken skin can be more prone to irritation and sensitisation, so many choose fragrance-free products. If you have a known fragrance allergy, avoiding the identified allergen is recommended; patch testing by a dermatologist is the authoritative way to confirm whether geraniol specifically is a problem for you.