Fibroin

AKA: Silk fibroin, Fibroin protein

Synthetic

Clean

Origin-Derived

Fibroins. Protein filaments produced by the silkworm, Bombyx mori

CAS #

9007-76-5

Form

Liquid

Skin Types

●all-skin-types

Best For

Loss of Elasticity

Pregnancy & Breastfeeding Safe

Yes

Functions

Bulking

Anti-Inflammatory

Moisturizing

Boosts Collagen

Adds volume

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

CIR

Safe as used

Pregnancy

Yes

Concentration Guide

CIR lists it as not reported to be in use.

CIR · report published 2020

Regulatory Status

USA✔ permitted

EU⚠ restricted

JAPAN⚠ restricted

CANADA⚠ restricted

Regulatory Agencies

Verified Jun 2026

Data: CosIng · EWG · CIR