Hydrolyzed Yeast

Hydrolyzed Yeast molecular structure
molecular structure · PubChem
AKA: Yeast Extract, Yeast Hydrolysate
Synthetic
Skin Conditioner
Hair Care
Ferment
Clean
Yeast, hydrolyzates
CAS #
227025-31-2
Form
Liquid
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.
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
Skin Types
●all-skin-types
Best For
Dullness
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR