What it is
This is a mixture of branched (iso) saturated hydrocarbons in the C13 to C14 range, prized for its very light, non-greasy skin feel and quick spread. It functions as an emollient and as a solvent or carrier for other oil-soluble ingredients, helping pigments and UV filters distribute evenly. Its low viscosity and clean afterfeel make it a popular replacement for heavier oils in modern lightweight sunscreens.
Safety & warnings
Light isoalkanes of this type are generally well tolerated, non-sensitizing, and considered low on the comedogenicity scale because of their volatility and light texture. They are commonly chosen specifically for sensitive- and oil-prone-skin formulas.
Origin & sourcing
Synthetic hydrocarbon; it can be produced from petrochemical feedstocks or, increasingly, from renewable plant-derived sources.
Questions everyone asks
Why is it used instead of a richer oil?
Its branched, lightweight structure spreads quickly and leaves a dry, non-greasy finish, which suits lightweight and matte sunscreen textures.
Does it clog pores?
It is generally considered low on the comedogenicity scale, but individual responses vary and very acne-prone users should patch test.