murphyHydrolyzed Yeast
molecular structure · PubChem
AKA: Yeast Extract, Yeast Hydrolysate
Synthetic
Skin Conditioner
Hair Care
Clean
OriginDerived from Saccharomyces cerevisiae and other yeast species produced through fermentation processes. Hydrolyzed through acid or enzymatic treatment to break down yeast proteins into smaller peptides.
Yeast, hydrolyzates
CAS #
227025-31-2
Form
Liquid
Skin Types
●all-skin-types
Best For
Dullness
Pregnancy & Breastfeeding Safe
Yes
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
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.
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
3 studies / 3 not sensitizing (CIR 842)
Concentration Guide
Leave-on0.00038–0.004%
Rinse-offNot reported
0%50%100%
CIR reported use · report published 2024
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR