How we scored it
Bacillus culture filtrate extract: microbial metabolites and medium residues, n=1 by fermentation-product convention; folic acid in the medium is a minor retained mass and is ignored. 100% / 100% = 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 culturing Bacillus in a nutrient medium enriched with folic acid, then filtering and extracting the broth. Folic acid itself is commercially made by chemical synthesis, but it is only a minor part of the retained solids.
In plain English
A liquid obtained by growing Bacillus bacteria in a nutrient medium rich in folic acid (vitamin B9), then filtering and extracting the culture. It is used in skin-care products as an antioxidant, a moisture-binding agent and a skin conditioner. It comes from bacterial fermentation.
CosIng definition: Bacillus/Folic Acid Ferment Filtrate Extract is the extract of a filtrate of the product obtained through fermentation of a media containing a high level folic acid by the microorganism, Bacillus.
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.
- 2BACILLUS/FOLIC ACID FERMENT FILTRATE EXTRACT. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3BACILLUS/FOLIC ACID FERMENT FILTRATE EXTRACT. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=BACILLUS/FOLIC%20ACID%20FERMENT%20FILTRATE%20EXTRACT