What it is
Polydecene is a synthetic liquid polymer made from decene, a ten-carbon olefin. In cosmetics it serves as a clear, lightweight emollient that gives a smooth, non-tacky slip and helps condition the skin surface. It is often used to improve spreadability and skin feel in sunscreens, primers, and other leave-on formulas. The hydrogenated form, hydrogenated polydecene, is a closely related and widely used emollient.
Safety & warnings
Polydecene is an inert synthetic hydrocarbon emollient generally regarded as well tolerated, with low irritation and sensitization potential. It is not associated with notable comedogenicity at typical use levels.
Origin & sourcing
Synthetic; produced by polymerizing decene, a ten-carbon alpha-olefin.
Questions everyone asks
What is Polydecene used for?
It is a synthetic lightweight emollient that gives a smooth, non-greasy slip and helps formulas spread easily while conditioning the skin surface.
Is Polydecene related to hydrogenated polydecene?
Yes. Hydrogenated polydecene is the hydrogenated version of the same decene-based polymer and is a closely related, widely used emollient.