What it is
Hydrogenated Polydecene is a clear, odorless synthetic oil made by polymerizing decene and then hydrogenating it for stability. It is prized in cosmetic formulas as a non-greasy emollient that gives a smooth, light slip and helps other ingredients spread evenly across the skin. In sunscreens it can also serve as a carrier for oil-soluble UV filters and contributes to a pleasant, weightless after-feel.
Safety & warnings
Hydrogenated Polydecene is generally regarded as well tolerated, with a low likelihood of irritation or sensitization, and it contains no fragrance allergens. As a refined, stable synthetic hydrocarbon it is widely considered low on the comedogenicity scale, though as with any emollient individual responses can vary.
Origin & sourcing
Synthetic. It is produced by polymerizing decene (a hydrocarbon derived from petrochemical feedstock) and hydrogenating the result to improve oxidative stability.
Questions everyone asks
Is Hydrogenated Polydecene a natural or synthetic oil?
It is a synthetic hydrocarbon oil, made by polymerizing and hydrogenating decene rather than pressing it from a plant.
Why is it used in sunscreens?
It acts as a light, non-greasy emollient that improves spreadability and can help carry oil-soluble UV filters, contributing to a smooth, weightless feel.