murphyHydrolyzed Hazelnut Protein
molecular structure · PubChem
AKA: Hazelnut Protein Hydrolysate, Corylus Avellana Protein
Synthetic
Skin Conditioner
Clean
OriginDerived from hazelnut (Corylus avellana) kernels, a plant protein source commonly used in cosmetic formulations. Produced through enzymatic hydrolysis of hazelnut proteins to break them into smaller peptide chains.
Hydrolyzed Hazelnut Protein is the hydrolysate of Hazelnut Protein derived by acid, enzyme or other method of hydrolysis
Form
Powder
State
Solid
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
Allergen Warning
⚠️ Tree Nut (Hazelnut)
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-reviewednone on file
⚖️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
Lab (in vitro) test found no phototoxicity in the CIR safety assessment (CIR 733)
Not a Skin Irritant
1 study / 1 not irritating (CIR 733)
Not a Sensitizer
1 study / 1 not sensitizing (CIR 733)
Not an Eye Irritant
1 study / 1 not irritating (CIR 733)
Concentration Guide
Leave-on0.25–0.99%
Rinse-offNot reported
0%50%100%
CIR reported use · report published 2022
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR