What it is
Gamma-docosalactone is a large-ring lactone belonging to the family of cyclic ester aroma chemicals. In cosmetics it is used as a fragrance ingredient, contributing to the scent profile of a finished product. It is included at the low levels typical of perfuming components.
Safety & warnings
As a fragrance ingredient it is used at low concentrations consistent with fragrance-safety practice. Individuals with fragrance sensitivities may react to scented products in general, so patch testing is reasonable for that group. It is not an oil, so comedogenicity is not a relevant concern.
Questions everyone asks
What is gamma-docosalactone used for?
It is used as a fragrance ingredient to contribute to a product's overall scent.
Is it a UV filter?
No; it is a fragrance component and does not provide sun protection.