Also known as milk thistle, this extract has a great deal of research showing it has many applications, owing to the skin-soothing, restorative, and antioxidant effects of its main chemical seed constituent, silymarin.
References for this information:
International Journal of Oncology, May 2010, pages 1,053–1,060
Clinics in Dermatology, September-October 2009, pages 479–484
Photochemistry and Photobiology, March-April 2008, pages 266–271