Lactobacillus Ferment
AKA “Lactobacillus Ferment
Skin Conditioning
Ingredient Facts
Lactobacillus ferment
Skin Conditioning · Skin Conditioning · EWG: 1
Plant-Derived Synthetic
Skin Conditioner
Ferment
Clean
Lactobacillus Ferment is the product obtained from the fermentation of Lactobacillus.
CAS #
Varies by strain
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.
Locks in moisture
Traditional Use
A modern biotech-derived ingredient created by fermenting plant or nutrient materials with Lactobacillus bacteria. Developed in the late 20th century to create probiotic-rich extracts that support skin microbiome health.
Skin Types
all-skin-types, gentle
Best For
Sensitivity
Pregnancy & Breastfeeding Safe
Yes
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
ewg-1
medical-approval
pregnancy-nursing-safe
all-shades-safe
Phototoxicity Concern
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
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Final Report: Safety Assessment of Lactobacillus Ferment Ingredients as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
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)
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 Jun 2026
Data: CosIng · EWG · CIR