What it is
Cetearyl Nonanoate is a fatty ester formed from cetearyl alcohol and nonanoic (pelargonic) acid, valued for its light, silky, non-greasy slip. It functions as an emollient that smooths and softens skin and improves the spreadability of creams and sunscreens, including mineral formulas where it helps disperse pigments. It serves as a skin-feel modifier rather than an active ingredient.
Safety & warnings
Generally well tolerated and low in irritation potential. As a fatty ester, individuals very prone to clogged pores may prefer to monitor their own response, though it is widely used in lightweight formulations.
Origin & sourcing
Synthetic; an ester produced from cetearyl alcohol and nonanoic acid.
Questions everyone asks
What does Cetearyl Nonanoate do?
It is a lightweight emollient ester that softens skin and improves how smoothly a product spreads.
Why is it used in mineral sunscreens?
Its light slip helps disperse mineral pigments and improves application feel.