Polyacrylate-21
molecular structure · PubChem
AKA: Polymer, Acrylate Polymer
Synthetic
Occlusive
Not Clean
Polyacrylate-21 is a copolymer of 2-ethylhexyl acrylate, butyl methacrylate, methacrylic acid, methyl methacrylate, hydroxypropyl methacrylate and styrene
CAS #
-
Form
Powder
Functions
Binding
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Hair Fixing
Holds Formula Together
Creates Protective Barrier
Creates protective layer
Holds hair in place
Holds ingredients together
Traditional Use
A synthetic polymer created for cosmetic applications as a thickening and stabilizing agent, with no traditional use history.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR