What it is
This ingredient is a polyurethane-type associative thickener built from polyethylene glycol segments linked through hydrogenated diisocyanate chemistry and capped with fatty ether groups. In sunscreens it controls viscosity and helps create a cushiony, gel-like texture while supporting emulsion stability and even application. Associative thickeners of this kind are favored for delivering a smooth, non-tacky sensory feel in aqueous and emulsion systems.
Safety & warnings
This polymeric thickener is used at low levels and is generally well tolerated, with low sensitization potential typical of high-molecular-weight cosmetic polymers.
Origin & sourcing
Synthetic polymer manufactured by reacting PEG segments with a diisocyanate and fatty alcohol ethoxylates.
Questions everyone asks
What does this ingredient do?
It is a thickener and texture modifier that gives water-based sunscreens body and a smooth, cushiony feel while helping the emulsion stay stable.
Is it a sunscreen active?
No. It is a formulation polymer that shapes texture and stability, not a UV filter.