Dilinoleic Acid/Butanediol Copolymer

Plant-Derived Synthetic
Occlusive
Plant Oil
Acid
Clean
Dilinoleic Acid/Butanediol Copolymer is a copolymer of dilinoleic acid and 1,4-butanediol monomers
Functions
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Plasticiser
Moisturizing
Strengthens Barrier
Creates protective layer
Adds flexibility
Traditional Use
A modern synthetic polymer developed as a film-forming and conditioning agent in contemporary skincare products. Created to provide texture, spreadability, and skin-conditioning benefits in cosmetic formulations.
EWG
1
CIR
Insufficient
Pregnancy
Yes
CIR Safety Findings
ewg-1
pregnancy-nursing-safe
all-shades-safe
Regulatory Status
USAunder review
EUrestricted
JAPANrestricted
CANADArestricted
Skin Types
all-skin-types, gentle
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