Butyl Isostearate
AKA “Butyl 16-methylheptadecanoate, EINECS 302-444-3, RefChem:122199, DTXCID30163091, BKEUNIPSDCRXQK-UHFFFAOYSA-N”
Synthetic
Ingredient Facts
Butyl isostearate
AKA: Butyl 16-methylheptadecanoate, EINECS 302-444-3, RefChem:122199, DTXCID30163091, BKEUNIPSDCRXQK-UHFFFAOYSA-N
Synthetic · Emollient · EWG: 4
Plant-Derived Synthetic
Emollient
Skin Conditioner
Synthetic
Clean
A lightweight emollient that softens and conditions skin, leaving it smooth and supple without a heavy feel.
Formula
C22H44O2
Mol. Weight
340.60
CAS #
94109-07-6
Form
Liquid
See origin →
Functions
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Viscosity Controlling
Locks In Moisture
Traditional Use
Synthetic ester developed as a cosmetic emollient and skin conditioning agent. Created to provide a lightweight feel and improved spreadability in modern skincare formulations.
Skin Types
●all-skin-types
Best For
Dryness
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR