Methacryloyl Ethyl Betaine/Acrylates Copolymer

Methacryloyl Ethyl Betaine/Acrylates Copolymer 1
Methacryloyl Ethyl Betaine/Acrylates Copolymer 2
AKA: Film Former
Synthetic
Occlusive
Clean
N-Carboxylatomethyl-N,N-dimethyl-4-methyl-3-oxo-4-pentenaminium, polymer with 2-methyl-2-propenoic acid or its simple esters
CAS #
87435-35-6
Form
Liquid
State
Solid
Functions
Antistatic
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Hair Fixing
Wound Healing
Anti-Inflammatory
Strengthens Barrier
Creates protective layer
Reduces flyaways
Holds hair in place
Traditional Use
Modern polymer synthesized in the late 20th century for cosmetic applications as a conditioning and film-forming agent with antistatic properties; created to improve texture and performance of hair and skincare products.
EWG
2
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR