How we scored it
Fermentation filtrate: microbial metabolites and residual medium components (sugars, proteins, minerals), all biological origin (n=1). 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 fermentation of a sugar-and-protein medium by Streptococcus thermophilus, then extraction and filtration. The exact medium is not specified; no non-fermentation route is relevant.
In plain English
A filtered extract of a culture grown with Streptococcus thermophilus, a bacterium also used to make yogurt. In products it is used as an emollient to soften skin. Made by letting the bacteria ferment a nutrient medium, then extracting and filtering the broth.
CosIng definition: Streptococcus Thermophilus Ferment Extract Filtrate is a filtrate of an extract of the product obtained through fermentation by the microorganism, Streptococcus thermophilus.
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.
- 2STREPTOCOCCUS THERMOPHILUS FERMENT EXTRACT FILTRATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3STREPTOCOCCUS THERMOPHILUS FERMENT EXTRACT FILTRATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=STREPTOCOCCUS%20THERMOPHILUS%20FERMENT%20EXTRACT%20FILTRATE