murphyHydrolyzed Keratin
molecular structure · PubChem
AKA: Keratin Hydrolysate, Hydrolyzed Keratin Protein, Soluble Keratin
Synthetic
Humectant
Occlusive
Skin Conditioner
Hair Care
Clean
Origin-Derived (wool/feathers) or Plant-Derived
Keratins, hydrolyzates. A biological material consisting predominantly of partially hydrolyzed keratin
CAS #
69430-36-0
Form
Powder
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
Functions
Antistatic
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Hair Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Humectant
A moisture magnet. Pulls water from the air and deeper skin layers up to the surface to keep skin plump and hydrated.
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 Phototoxic
Animal test found no phototoxicity in the CIR safety assessment (CIR 713)
Not a Skin Irritant
3 studies / 3 not irritating (CIR 713)
Not a Sensitizer
3 studies / 3 not sensitizing / plus 1 case report (CIR 713)
Mixed Eye Irritation Results
2 studies / 1 mixed / 1 not irritating / reactions minimal (CIR 713)
Concentration Guide
Leave-on0.000034–5%
Rinse-off0.0001–0.88%
0%50%100%
CIR reported use · report published 2021
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR