Tanacetum Parthenium (Feverfew) Average Plant extracts No known benefits Tanacetum Parthenium (Feverfew) description _Tanacetum parthenium_ (commonly known as feverfew) can be potentially sensitising if a specific constituent of the feverfew plant known as parthenolide (technically, sesquiterpene lactone) is present. If the parthenolide is removed from feverfew, it is not a problem for skin and may actually be beneficial because parthenolide-free feverfew has potent skin-soothing properties and can help to diminish redness. If a skin care product contains _Tanacetum parthenium_, it’s best to contact the company to confirm that the feverfew in their products is parthenolide-free. Note: All Paula’s Choice products are parthenolide-free. Related ingredients: Feverfew Extract Chrysanthemum Parthenium (Feverfew) Extract Chrysanthemum Parthenium Flower Extract