How we scored it
Plant callus cells grown on a sugar and mineral medium; every atom in the biomass is plant-derived (n = 1). Hormones and solvents leave no mass. 1.0 / 1.0 = 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 route is plant cell culture: Calendula officinalis callus is grown on a sucrose-based nutrient medium in flasks or bioreactors, then harvested and extracted. No commercially significant alternative route exists; supplier carriers are declared separately and not counted.
In plain English
An extract of calendula (pot marigold, Calendula officinalis) cells grown in a laboratory nutrient culture rather than in a field, then harvested and extracted. It is listed as an emollient, skin-conditioning and skin-protecting ingredient.
CosIng definition: Calendula Officinalis Callus Extract is the extract of the callus of Calendula officinalis grown in culture
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.
- 2CALENDULA OFFICINALIS CALLUS EXTRACT. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3CALENDULA OFFICINALIS CALLUS EXTRACT. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CALENDULA%20OFFICINALIS%20CALLUS%20EXTRACT