Hydrolyzed Yeast
AKA “Yeast Extract, Yeast Hydrolysate
Skin Conditioning
Ingredient Facts
Hydrolyzed yeast
AKA: Yeast Extract, Yeast Hydrolysate
Skin Conditioning · Hair Conditioning · EWG: 1
Synthetic
Skin Conditioner
Hair Care
Ferment
Clean
Yeast, hydrolyzates
CAS #
227025-31-2
Form
Liquid
See origin →
Functions
Hair Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
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
Yeast has been used in traditional European skincare and folk medicine for its nutritive and skin-healing properties. Modern hydrolyzed yeast extracts were developed to harness vitamins, amino acids, and antioxidants for skincare products.
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
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Hydrolyzed Yeast
European Commission
EU Cosmetic Ingredient Database (CosIng)
Hydrolyzed Yeast 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 Extract
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
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
Verified Jun 2026
Data: CosIng · EWG · CIR