Nylon-12/6/66 Copolymer

Nylon-12/6/66 Copolymer molecular structure
molecular structure · PubChem
AKA: Polyamide copolymer, Nylon copolymer 12/6/66
Synthetic
Occlusive
Not Clean
OriginDerived from adipic acid, hexamethylenediamine, and caprolactam monomers belonging to the polyamide chemical family. Synthesized through polycondensation reactions of these monomers to form a high-molecular-weight polymer chain.
6-Aminohexanoic acid, 12-aminododecanoic acid, 1,6-hexanedioic acid, 1,6-hexanediamine copolymer
CAS #
25038-54-4; 25035-04-5; 28774-87-0; 25038-74-8
Form
Liquid
State
Solid
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Creates Protective Barrier
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2014
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR