Pentaerythritol tetrakis
AKA “Pentek, Tetramethylolmethane, Auxinutril, Maxinutril”
Ingredient
Ingredient Facts
Pentaerythritol tetrakis
AKA: Pentek, Tetramethylolmethane, Auxinutril, Maxinutril
Ingredient · Humectant · EWG: 4
Synthetic
Humectant
Not Clean
Pentaerythritol tetrakis is a cosmetic ingredient.
Formula
C5H12O4
Mol. Weight
136.15
CAS #
115-77-5
Form
Liquid
See origin →
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
Antioxidant Protection
Draws moisture to skin
Traditional Use
A synthetic polymer ester developed in mid-20th century industrial chemistry. Adopted in cosmetics as a thickener, film-former, and emollient without historical precedent in traditional skincare.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR