How we scored it
Kombucha-type ferment: tea compounds, sugars, organic acids and cellulose come from tea and microbial metabolism (n=1); no synthetic fragment. 1 / 1 = 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
Black tea (Camellia sinensis) with a sugar source is fermented by a yeast and Acetobacter xylinum culture and the liquid is filtered. No alternative route is used; any preservative or carrier is declared separately on the INCI.
In plain English
A kombucha-style liquid made by fermenting black tea with yeast and acetic-acid bacteria, used in skincare for its skin-conditioning role. It is a fermentation product of tea and sugar.
CosIng definition: Saccharomyces/Xylinum/Black Tea Ferment is the product obtained by the fermentation of black tea by the microorganism, Saccharomyces and Xylinium
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.
- 2SACCHAROMYCES/XYLINUM/BLACK TEA FERMENT. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3SACCHAROMYCES/XYLINUM/BLACK TEA FERMENT. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=SACCHAROMYCES/XYLINUM/BLACK%20TEA%20FERMENT