Plant used most often to enhance the flavor of foods. Like all plant extracts, sage contains components that function as antioxidants. There is some potential for sensitivity with sage extracts, but the risk is relatively low at the amounts used in topical skincare products.
References for this information:
Planta Medica, September 2007, pages 1.190-1,191
Journal of Ethnopharmacology, May 2001, pages 125-132