Piper Methysticum Leaf/Root/Stem Extract

Piper Methysticum is also known as the Kava Kava plant, native to Pacific islands. This ingredient is derived from the leaf, root, and/or stem of the plant.

A safety assessment from 2019 deemed the safety studies for this ingredient to be insufficient. Amounts between 0.0001% to 0.01% of this ingredient can be found in cosmetics.

Some sources suggest this ingredient may cause skin sensitivity but further studies are needed.