Pentaerythrityl Tetra C5-10 Acid Esters
AKA “Pentaerythritol Ester
Acid
Ingredient Facts
Pentaerythrityl tetra c5-10 acid esters
AKA: Pentaerythritol Ester
Acid · Plasticiser · EWG: 4
Synthetic
Acid
Not Clean
Fatty acids, C5-10, esters with pentaerythritol
CAS #
68424-31-7
State
Solid
See origin →
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.
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
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
Verified Jun 2026
Data: CosIng · EWG · CIR