PEG-33

PEG-33

AKA “Polyethylene glycol 33, Polyethylene glycol 1500”

Humectant

Ingredient Facts

PEG-33

AKA: Polyethylene glycol 33, Polyethylene glycol 1500

Humectant · Humectant · EWG: 2

Synthetic

Humectant

Solvent

Clean

Poly(oxy-1,2-ethanediyl), .alpha.-hydro-.omega.-hydroxy-, (33 mol EO average molar ratio)

CAS #

25322-68-3

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.

Solvent

Dissolves other ingredients so they distribute evenly in the formula. Often the invisible "base" everything else is mixed into.

Locks In Moisture

Traditional Use

Polyethylene glycol polymers were synthesized in the 1950s and adopted by the cosmetics industry in the mid-20th century as humectants and texture-modifying agents to improve stability, water-binding, and product consistency in skincare formulations.