Research Area: Cancer Biological Activity: Silymarin(Silybin B) is a polyphenolic flavonoid derived from milk thistle. Silymarin consists of three phytochemicals: silybin, silidianin and silicristin. Silybin is the most active phytochemicals and is largely responsible for the claimed benefits of silymarin. Silymarin is a antioxidant or free radical scavenger. Skin care products often contain silymarin because it antioxidant activity may reduce the risk for skin cancer risk. [1]