What it is
Silybum Marianum Seed Extract is obtained from the seeds of milk thistle (Silybum marianum), which are a source of flavonolignan compounds collectively known as silymarin. In skincare it is used for its antioxidant properties, helping to support the skin against oxidative stress, and for general conditioning. It is commonly added to leave-on formulas at modest levels.
Safety & warnings
Generally well tolerated in cosmetic use. Milk thistle belongs to the same plant family as ragweed and daisies, so people with known Asteraceae plant allergies may rarely react.
Origin & sourcing
Plant-derived: extracted from the seeds of the milk thistle plant (Silybum marianum).
Questions everyone asks
What plant is this from?
It is extracted from the seeds of milk thistle, Silybum marianum, the source of the compounds known as silymarin.
Why is it used in skincare?
Primarily for its antioxidant properties and to help condition the skin.