Also known as Chinese Thistle Daisy, this root extract has been shown to have skin-soothing properties. Whether or not this can be of benefit when the entire extract is applied topically is unknown.
References for this information:
Yajugaku Zasshi, The Pharmaceutical Society of Japan, March 2006, pages 133–143
European Journal of Pharmacology, April 2005, issues 2-3, pages 105–115
Planta Medica, July 2001, pages 437–442