What it is
Myristyl myristate is the ester of myristyl alcohol and myristic acid, a soft, waxy solid at room temperature. It functions as an emollient that softens skin and as a thickening and opacifying agent that gives creams and sticks structure and a smooth, powdery, velvety after-feel. It is commonly used in sunscreen sticks, balms, and creams where a substantive, non-greasy finish is desired.
Safety & warnings
Myristyl myristate is well tolerated as a cosmetic emollient and thickener. As a saturated fatty ester it is considered to have meaningful comedogenic potential, so those prone to clogged pores or breakouts may prefer to avoid it in rich leave-on products. It is not a recognized fragrance allergen.
Origin & sourcing
Synthetic. It is made by esterifying myristyl alcohol with myristic acid, fatty raw materials that can be derived from plant oils such as coconut or palm.
Questions everyone asks
What does myristyl myristate do in a sunscreen?
It works as an emollient and thickener, softening skin and giving creams and sticks body along with a smooth, velvety finish.
Is myristyl myristate comedogenic?
It is generally considered to have notable comedogenic potential, so people prone to clogged pores may wish to limit it in rich leave-on formulas.