murphySaccharomyces cerevisiae extract
AKA: Yeast Extract, Baker's Yeast Extract, Brewer's Yeast Extract
Plant-Derived
Skin Conditioner
Ferment
Extract
Clean
OriginSaccharomyces cerevisiae is a strain of baker's yeast commonly used in fermentation industries worldwide. The extract is produced through fermentation of the yeast cells, followed by cell lysis and concentration.
Saccharomyces Cerevisiae Ferment is an extract of the yeast cells of Saccharomyces Cerevisiae
CAS #
84604-16-0
Form
Liquid
Skin Types
●all-skin-types
Best For
Dullness
Pregnancy & Breastfeeding Safe
Yes
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
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 Skin Irritant
2 studies / 2 not irritating (CIR 842)
Mixed Sensitization Results
1 study / 1 mixed (CIR 842)
Mixed Eye Irritation Results
2 studies / 1 irritating / 1 mixed / reactions minimal (CIR 842)
Concentration Guide
Leave-on0.001–0.18%
Rinse-off0.0001–0.3%
0%50%100%
CIR reported use · report published 2024
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR