How we scored it
Solvent/water extract of rhubarb root; extraction process removes no atoms from the resulting plant material → 1.0.
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
Produced by extracting dried Rheum palmatum roots with water or a water/solvent mixture. This is the standard commercial route for this botanical extract.
In plain English
An extract of rhubarb (Rheum palmatum) roots. Used in cosmetics as a toning, astringent, skin-conditioning ingredient.
CosIng definition: Rheum Palmatum Root Extract is an extract of the roots of the Rhubarb, Rheum palmatum L., Polygonaceae
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.
- 2RHEUM PALMATUM ROOT EXTRACT. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3RHEUM PALMATUM ROOT EXTRACT. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=RHEUM%20PALMATUM%20ROOT%20EXTRACT