What it is
Centaurea cyanus, the cornflower, is a blue-flowered plant whose floral extract has a long folk-cosmetic tradition, classically as cornflower water used around the eyes. In modern formulas it serves as a conditioning and soothing botanical that can impart a mild calming feel to the skin. In sunscreens it is typically a minor ingredient contributing to overall skin comfort rather than to UV protection.
Safety & warnings
Generally well tolerated. Because cornflower belongs to the Asteraceae (Compositae) family, people with known allergies to plants such as ragweed, chamomile, or daisies may be more prone to sensitivity and should consider patch testing. It is not associated with comedogenicity.
Origin & sourcing
Natural; derived from the flowers of Centaurea cyanus, an herbaceous plant in the daisy (Asteraceae) family.
History
Cornflower water (eau de bleuet) has a long history in European cosmetics and home remedies, traditionally used as a gentle floral water for the eye area, and the flower extract continues that tradition in contemporary skin care.
Questions everyone asks
What does cornflower extract do in skin care?
It is used as a soothing and conditioning botanical and has a traditional association with the eye area; it does not provide UV protection.
Can people with plant allergies use it?
Cornflower is in the Asteraceae family, so those allergic to ragweed, chamomile, or daisies may be more reactive and should patch test first.