Herb and spice plant, the source of a fragrant component; it can aggravate skin.
Newer research has shown that coriander leaf extract has restorative benefit, which is likely due to coriander leaf being a rich source of linolenic acid. It also appears coriander offers antioxidant benefit, at least when consumed orally. Last, components in coriander oil have skin-soothing benefits, but that doesn't mean its fragrance components aren't cause for concern.
References for this information:
Journal of Medicinal Food, ePublication, July 2014
Phytotherapy Research, March 2012, issue 3, pages 420-424
Journal of the German Society of Dermatology, October 2008, pages 847-851
Journal of Food Protection, July 2001, issue 7, pages 1019–1024