What it is
Silybum Marianum Fruit Extract is derived from the fruit (seeds) of milk thistle, a plant whose seeds are a recognized source of silymarin, a complex of antioxidant flavonolignans. In skincare it is used as an antioxidant and skin-conditioning botanical, often included in soothing and protective formulations. It is typically a supporting ingredient rather than a primary functional active.
Safety & warnings
Milk thistle fruit extract is generally well tolerated on the skin at cosmetic concentrations. As with other botanical extracts, sensitive individuals may rarely react; a patch test is reasonable for very reactive skin.
Origin & sourcing
Plant-derived. It is extracted from the fruit of Silybum marianum (milk thistle), a flowering plant native to the Mediterranean region and now naturalized widely.
Questions everyone asks
What is milk thistle known for in skincare?
Its fruit is a source of silymarin, a complex of antioxidant flavonolignans, which is why the extract is used for antioxidant and skin-conditioning purposes.
Which part of the plant is used?
The extract is taken from the fruit (seeds) of the milk thistle plant.