How we scored it
CosIng description (authoritative) identifies this as a leaf extract = 1.0 by this site's convention; attached formula matches indirubin, likely a mismatched marker-compound record, but plant-extracted indirubin would also be natural.
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
Obtained by extracting the leaves of Indigofera tinctoria (indigo plant), traditionally fermented/oxidised to yield indigo pigments including indirubin. No petrochemical route is used commercially for the extract.
In plain English
An extract from the leaves of the indigo plant, traditionally used as a dye source. Used in skincare to help condition the skin; may contain the natural pigment indirubin.
CosIng definition: Indigofera Tinctoria Leaf Extract is the extract of the leaves of Indigofera tinctoria.
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.
- 2INDIGOFERA TINCTORIA LEAF EXTRACT. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3INDIGOFERA TINCTORIA LEAF EXTRACT. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=INDIGOFERA%20TINCTORIA%20LEAF%20EXTRACT