How we scored it
Plant extract: all constituents derive from plant biomass (n=1); extraction solvent leaves no mass. 1.00 / 1.00 = 1.00.
What counts. ISO 16128-2 scores the atoms that remain in the final ingredient. Reagents, solvents, catalysts and protecting groups used during manufacture leave no mass behind and are not counted.
Where it comes from
Harvested Leonurus sibiricus flowers, leaves and stems are extracted with water, ethanol or glycerin-type solvents, then filtered. No synthetic route exists; a carrier such as propylene glycol is a separate INCI line and is not scored here.
In plain English
An extract of the flowers, leaves and stems of Siberian motherwort (Leonurus sibiricus), a mint-family herb, listed in CosIng with a soothing function. It is a mixture of plant compounds, and its makeup depends on the solvent and supplier.
CosIng definition: Leonurus Sibiricus Flower/Leaf/Stem Extract is the extract of the flowers, leaves and stems of Leonurus sibiricus L., Lamiaceae
References
- 1ISO 16128-1:2016 and ISO 16128-2:2017 — Guidelines on technical definitions and criteria for natural and organic cosmetic ingredients and products. ISO, Geneva.
- 2LEONURUS SIBIRICUS FLOWER/LEAF/STEM EXTRACT. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3LEONURUS SIBIRICUS FLOWER/LEAF/STEM EXTRACT. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=LEONURUS%20SIBIRICUS%20FLOWER/LEAF/STEM%20EXTRACT