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Yarrow essential oil is distilled from the aromatic above-ground parts of Achillea millefolium. Its composition and colour can vary, so the botanical and batch details matter.
Botanical identity
Achillea millefolium L. is an accepted species in Kew’s Plants of the World Online. It is a temperate perennial with a wide native range across Eurasia and Greenland.
The name “yarrow” can be used loosely in trade. A bottle should identify Achillea millefolium, the plant part used and whether the product is a pure distilled oil or a diluted blend.
How yarrow essential oil is made
Yarrow oil is generally steam-distilled from flowering aerial material. Heat and steam release volatile compounds, which are condensed and separated from the water-based distillate.
Some yarrow oils are blue because compounds formed during distillation include chamazulene. Colour alone is not a quality test. Cultivar, harvest, storage and processing can all change the finished oil.
Herb and essential oil are not interchangeable
The European Medicines Agency describes traditional uses for defined yarrow-herb preparations. Its assessment covers dried, expressed or extracted aerial parts, not a general claim for any yarrow essential oil.
This distinction prevents a common evidence error. A conclusion about tea, tincture or dry extract does not prove that inhaling or applying the concentrated volatile oil produces the same effect.
Aroma and traditional use
Yarrow oil is usually described as herbaceous, green and slightly camphoraceous. Yarrow itself has a long place in European herbal traditions, but history does not establish clinical effectiveness.
Safety
Do not swallow yarrow essential oil or apply it neat. Follow the exact product instructions and avoid the eyes, mouth, broken skin and other sensitive areas.
The EMA records skin reactions and cautions people who are hypersensitive to yarrow or related daisy-family plants. Stop after a rash, swelling or breathing symptom and seek urgent help for a severe reaction.
Reliable safety information for pregnancy, breastfeeding and young children is limited. Check the exact product with a pharmacist or doctor rather than assuming traditional use makes it suitable.
Evidence scores for yarrow
No Claim Review is currently linked to this oil. Traditional use or a marketing claim is not enough to assign an Evidence Score.