Plantago Lanceolata Leaf Extract Aceptable Antioxidante No known benefits Plantago Lanceolata Leaf Extract at a glance Plant extract from the plantain family Offers beneficial antioxidants that help defend skin from environmental stressors May potentially have a sensitizing effect on skin due its fragrance compounds and tannin content Of greater concern when the essential oil form of this ingredient is used Plantago Lanceolata Leaf Extract description _Plantago lanceolata_ leaf extract (also known as ribwort or plantain extract) is a source of antioxidants that help defend skin from environmental stressors. The one thing holding it back is that its fragrance compounds and tannin content may potentially have a sensitizing effect on skin, depending on how the ingredient is processed (different extraction methods yield different levels of these problematic constituents). Interestingly, suppliers of this ingredient tout its skin-soothing properties. This is a classic example of an ingredient perceived to have a calming effect on skin, when in reality it may be causing a cascade of damage below the surface. Worth noting, Plantago lanceolata’s volatile aromatic compounds are of greater concern with the essential oil form compared to the leaf extract. _Plantago lanceolata_ leaf extract is described as a greenish-brown liquid in raw material form. Suppliers recommend a maximum concentration of 10%. The Cosmetic Ingredient Review Expert Panel has not yet officially assessed this ingredient for safety. Fun fact: _Plantago lanceolata_ is an edible weed in the plantain family. Its leaves can be eaten raw or cooked. It’s a good source of calcium and potassium plus some trace minerals.