How we scored it
Plant cell-culture extract: cell constituents are plant-derived and medium sugars are natural, all n=1, so 1.0. Growth regulators and solvents leave no counted mass.
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
Callus tissue from Hypericum perforatum is propagated in vitro on a sucrose-based nutrient medium and then extracted. Whole-plant extracts of the same species are an alternative source and also score 1.0.
In plain English
An extract of St John's wort plant cells grown in a laboratory culture rather than harvested from fields. It is listed as an antioxidant, humectant, hair-conditioning and skin-protecting ingredient. The cells grow on a sugar-based nutrient medium.
CosIng definition: Hypericum Perforatum Callus Culture Extract is the extract of a culture of the callus of the St. John's wort, Hypericum perforatum L., Hypericaceae
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.
- 2HYPERICUM PERFORATUM CALLUS CULTURE EXTRACT. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3HYPERICUM PERFORATUM CALLUS CULTURE EXTRACT. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=HYPERICUM%20PERFORATUM%20CALLUS%20CULTURE%20EXTRACT