Poly(3-Hydroxyoctanoic Acid)

Poly(3-Hydroxyoctanoic Acid) 1
molecular structure · PubChem CID 726893
Synthetic
Skin Conditioner
Acid
Not Clean
OriginPoly(3-hydroxyoctanoic acid) is a polyhydroxyalkanoate (PHA) synthesized from petrochemical or bio-based feedstocks. It is produced through bacterial fermentation or chemical polymerization of hydroxyoctanoate monomers.
Poly(3-Hydroxyoctanoic Acid) is a cosmetic ingredient. Assessed as safe by the CIR.
Formula
C18H17N3O3
Mol. Weight
323.3
CAS #
96478-13-6
Form
Powder
State
Solid
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Light Stabilizer
Skin Protecting
Locks In Moisture
Antioxidant Protection
Reduces Inflammation
Shields skin from damage
Prevents light degradation
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory0 listings
🛡️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 2026
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR