Pentaerythritol Rosinate
molecular structure · PubChem
AKA: Pentek, Tetramethylolmethane, Auxinutril, Maxinutril
Synthetic
Humectant
Not Clean
Pentaerythritol Rosinate is a cosmetic ingredient. Assessed as safe by the CIR.
Formula
C5H12O4
Mol. Weight
136.15
CAS #
115-77-5
Functions
Humectant
A moisture magnet. Pulls water from the air and deeper skin layers up to the surface to keep skin plump and hydrated.
Draws In Moisture
Conditions Skin
Anti-Aging Benefits
Antioxidant Protection
Draws moisture to skin
Traditional Use
A synthetic ester developed in the 20th century from the combination of pentaerythritol and rosin (a tree resin byproduct). Used in cosmetics as a film-former and texture modifier with no traditional use.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory0 listings
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR