Lactobacillus
AKA “Lactic acid bacteria, LAB, UNKNOWN
Protein
Ingredient Facts
Lactobacillus
AKA: Lactic acid bacteria, LAB, UNKNOWN
Protein · Soothing · EWG: 1
Synthetic
Preservative
Soothing
Skin Conditioner
Ferment
Protein
Clean
A naturally occurring probiotic that helps balance and condition skin, supporting a healthy complexion.
CAS #
-
Form
Powder
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.
Soothing
Calms redness, irritation, and inflammation. Your skin's chill pill — great for sensitive, reactive, or post-procedure skin.
Preservative
Keeps your product from growing bacteria, mold, or yeast. Without these, that jar of cream becomes a petri dish in about a week.
Locks in moisture
Traditional Use
Naturally present in fermented foods and the human microbiome for centuries. Modern probiotic skincare use emerged in the early 2000s after research showed these beneficial bacteria could support skin barrier function and reduce inflammation.
Skin Types
all-skin-types, gentle
Best For
Sensitivity
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
1
CIR
Safe
Pregnancy
Yes
CIR Safety Findings
ewg-1
pregnancy-nursing-safe
all-shades-safe
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
Tumor-resident Lactobacillus iners confer chemoradiation ...
Lauren E Colbert, Molly B El Alam, Rui Wang, Tatiana Karpinets, David Lo, Erica J Lynn + 39 more
Cancer cell, 2023
Lactobacillus
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Lactobacillus Ferment
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Lactobacillus Ferment Filtrate
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Lactobacillus Ferment Lysate
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Lactobacillus/acerola cherry ferment
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Lactobacillus/Radish Root Ferment Filtrate
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Lactobacillus
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Lactobacillus Ferment
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Lactobacillus Ferment Lysate
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Characterization and cytotoxicity assessment of biosurfactant derived from Lactobacillus pentosus NCIM 2912.
Sharma V, Singh D, Manzoor M, Banpurkar AG, Satpute SK et al.
Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology], 2022
Effects of a Postbiotic Saccharomyces and Lactobacillus F...
Yue Wang, Jun Li, Jianming Wu, Shihong Gu, Huishu Hu, Rongjuan Cai + 2 more
Clinical, cosmetic and investigational dermatology, 2023
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
Lactobacillus plantarum-derived cytoplasmic membrane vesicles as novel anti-inflammatory nanotherapeutics for psoriasis management.
Xie Y, Lv G, Su D, Li M, Xu Q et al.
Frontiers in immunology, 2025
Verified Feb 2026
Data: CosIng · EWG · CIR