What it is
PEG-32 is a polyethylene glycol polymer that is water-soluble and acts as a humectant, helping draw and hold moisture, while also functioning as a solvent and carrier for other ingredients. Its grade corresponds to a moderate average molecular weight, giving it a soft, conditioning feel in the water phase. In sunscreens it supports texture and helps dissolve or distribute other formula components.
Safety & warnings
PEG-32 is generally well tolerated and widely used in cosmetics. It is not a recognized fragrance allergen and is considered low-irritation at typical use levels; sensitivity to PEGs is uncommon.
Origin & sourcing
Synthetic; produced by polymerization of ethylene oxide.
Questions everyone asks
What does PEG-32 do in a formula?
It works as a humectant and solvent, helping retain moisture and dissolve or carry other ingredients in the water phase.
What does the number 32 mean?
It indicates the average number of ethylene oxide units in the polymer, which relates to its molecular weight and properties.