How we scored it
Filtrate of an extract of Lactobacillus fermentation product: bacterial metabolites (lactic acid, peptides, polysaccharides) and residual sugar-and-protein medium, all fermentation-derived n=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
Dominant route is batch fermentation of Lactobacillus on a sugar-and-nitrogen growth medium, followed by extraction and sterile filtration. The INCI does not name the growth medium, so any non-natural medium component retained in the filtrate cannot be fully excluded.
In plain English
A filtered liquid made by growing Lactobacillus, the lactic acid bacteria also used in yoghurt, on a nutrient broth, then extracting and filtering the result. It is listed in skincare products for an antioxidant function and is made from bacterial fermentation products.
CosIng definition: Lactobacillus Ferment Extract Filtrate is a filtrate of an extract of the product obtained by the fermentation of the growth media by the microorganism Lactobacillus.
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.
- 2LACTOBACILLUS FERMENT EXTRACT FILTRATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3LACTOBACILLUS 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=LACTOBACILLUS%20FERMENT%20EXTRACT%20FILTRATE