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Yeast
AKA “Yeast Extract”
Skin Conditioning
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Ingredient Facts
Yeast
AKA: Yeast Extract
Skin Conditioning · Skin Conditioning · EWG: 1
Synthetic
Skin Conditioner
Ferment
Clean
Saccharomyces cerevisiae
CAS #
68876-77-7
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.
Locks in moisture
Traditional Use
Fermented organisms used in traditional medicine systems, particularly in Traditional Chinese Medicine and Ayurveda for digestive support. Modern cosmetic use developed in the 20th century for skin conditioning and anti-aging properties.
Skin Types
●all-skin-types
Best For
Dullness
Pregnancy & Breastfeeding Safe
Yes
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
medical-approval
all-shades-safe
Phototoxicity Concern
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Reviewing the Source, Physiological Characteristics, and Aroma Production Mechanisms of Aroma-Producing Yeasts.
Chen L, Li K, Chen H, Li Z
Foods (Basel, Switzerland), 2023
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Screening of yeasts for the production of 2-phenylethanol (rose aroma) in organic waste-based media.
Chreptowicz K, Sternicka MK, Kowalska PD, Mierzejewska J
Letters in applied microbiology, 2018
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Final Report: Safety Assessment of Yeast-Derived Ingredients as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Hydrolyzed Yeast
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Hydrolyzed Yeast Extract
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Lactic Yeasts
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Yeast
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Yeast Amino Acids
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Yeast Ferment Extract
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Probiotic, Paraprobiotic, and Hydrolyzed Yeast Mixture Supplementation Has Comparable Effects to Zinc Oxide in Improving Growth Performance and Amelio
Dang X, Choi SY, Choi YJ, Lee JH, Castex M et al.
Probiotics and antimicrobial proteins, 2024
→
Hydrolyzed Yeast
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Hydrolyzed Yeast Extract
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Yeast
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Yeast Amino Acids
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Yeast Extract
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Yeast Ferment Extract
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Inhibitory effect of probiotic yeast Saccharomyces cerevisiae on biofilm formation and expression of α-hemolysin and enterotoxin A genes of Staphyloco
Saidi N, Owlia P, Marashi SMA, Saderi H
Iranian journal of microbiology, 2019
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Yeast Extract: Characteristics, Production, Applications and Future Perspectives.
Tao Z, Yuan H, Liu M, Liu Q, Zhang S et al.
Journal of microbiology and biotechnology, 2023
→
Yeast Extract: Characteristics, Production, Applications and Future Perspectives.
Tao Z, Yuan H, Liu M, Liu Q, Zhang S et al.
Journal of microbiology and biotechnology, 2023
→
Yeast Extract: Characteristics, Production, Applications and Future Perspectives.
Tao Z, Yuan H, Liu M, Liu Q, Zhang S et al.
Journal of microbiology and biotechnology, 2023
→
Yeast Extract: Characteristics, Production, Applications and Future Perspectives.
Tao Z, Yuan H, Liu M, Liu Q, Zhang S et al.
Journal of microbiology and biotechnology, 2023
→
Probiotic Yeasts: A Developing Reality?
Tullio V
Journal of fungi (Basel, Switzerland), 2024
→
Verified Jun 2026
Data: CosIng · EWG · CIR