Pentaerythrityl Tetra C5-10 Acid Esters

AKA: Pentaerythritol Ester
Synthetic
Acid
Not Clean
Fatty acids, C5-10, esters with pentaerythritol
CAS #
68424-31-7
State
Solid
Functions
Plasticiser
Anti-Aging
Antioxidant
Moisturizing
Adds flexibility
Traditional Use
Synthetic esters created in the late 20th century from pentaerythritol and branched fatty acids. Developed as modern cosmetic texture modifiers and emollients.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
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