How we scored it
Botanical extract: every extracted constituent is plant-derived (n = 1); extraction solvent leaves no counted mass. Natural mass / total mass = 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
Dominant feedstock is dried turmeric rhizome, mainly from India, extracted with ethanol, water or glycol/glycerin solvents. No synthetic route exists for the extract; any carrier solvent is declared as a separate INCI line.
In plain English
An extract of turmeric rhizomes, the underground stems of Curcuma longa, a ginger-family plant grown mainly in India. It is used in skin-care products as a skin-conditioning ingredient and can add a yellow-orange tint. It is made by soaking the dried rhizomes in a solvent.
CosIng definition: Curcuma Longa Rhizome Extract is the extract of the rhizomes of the Turmeric, Curcuma longa L., Zingiberaceae
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.
- 2CURCUMA LONGA RHIZOME EXTRACT. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3CURCUMA LONGA RHIZOME EXTRACT. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CURCUMA%20LONGA%20RHIZOME%20EXTRACT