Bacillus Ferment
AKA “Bacillus fermentation product
Extract
Ingredient Facts
Bacillus ferment
AKA: Bacillus fermentation product
Extract · Antioxidant · EWG: 1
Synthetic
Antioxidant
Skin Conditioner
Ferment
Extract
Clean
Bacillus Ferment is a naturally fermented ingredient that helps condition and soften skin, leaving it feeling smooth and hydrated.
Form
Liquid
State
Liquid
See origin →
Functions
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Antioxidant
Fights free radicals — the unstable molecules from UV, pollution, and stress that break down collagen and cause premature aging.
Locks in moisture
Traditional Use
A modern biotechnology-derived ingredient created through fermentation of Bacillus microorganisms. Developed in recent decades as a natural preservative alternative and for its skin-conditioning properties in contemporary cosmetics.
Skin Types
all-skin-types, gentle
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
1
CIR
Insufficient
Pregnancy
Yes
CIR Safety Findings
ewg-1
pregnancy-nursing-safe
all-shades-safe
Regulatory Status
USAunder review
EUrestricted
JAPANrestricted
CANADArestricted
Final Report: Safety Assessment of Lactobacillus Ferment Ingredients as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Bacillus Ferment
European Commission
EU Cosmetic Ingredient Database (CosIng)
Lactobacillus Ferment
European Commission
EU Cosmetic Ingredient Database (CosIng)
Lactobacillus Ferment Filtrate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Lactobacillus Ferment Lysate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Lactobacillus Ferment Lysate Filtrate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Bacillus Ferment
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Lactobacillus Ferment
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Lactobacillus Ferment Filtrate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Lactobacillus Ferment Lysate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Effects of a Postbiotic Saccharomyces and Lactobacillus Ferment Complex on the Scalp Microbiome of Chinese Women with Sensitive Scalp Syndrome.
Wang Y, Li J, Wu J, Gu S, Hu H et al.
Clinical, cosmetic and investigational dermatology, 2023
Verified Feb 2026
Data: CosIng · EWG · CIR