Sorbitan Sesquicaprylate ●
TL;DR. This ingredient is a nonionic emulsifier and co-emulsifier that helps oil and water phases stay evenly dispersed. It can also improve solubilization of oily components and support preservation systems by improving wetting of microbes.
What does Sorbitan Sesquicaprylate do in a cosmetic formula?
This ingredient is a nonionic emulsifier and co-emulsifier that helps oil and water phases stay evenly dispersed. It can also improve solubilization of oily components and support preservation systems by improving wetting of microbes.
Is Sorbitan Sesquicaprylate clean?
From a clean-beauty perspective, it is generally well accepted because it is non-ethoxylated, mild for most skin types, and not a common restricted-list ingredient. Like many surfactants, it may cause stinging or irritation at higher levels or around the eyes.
Is Sorbitan Sesquicaprylate sustainable?
This material is commonly made from plant-derived sugar chemistry and medium-chain fatty acids, often from coconut or palm-kernel supply chains. It is expected to be readily biodegradable, with the main sustainability question being traceability and certification of the plant oil feedstock.
Is Sorbitan Sesquicaprylate COSMOS-approved?
It is generally permitted under COSMOS-natural and COSMOS-organic when made from allowed renewable feedstocks and compliant processing. Its profile fits Green Chemistry reasonably well because it is non-ethoxylated, biodegradable, and made by esterification rather than persistent silicone or fluorinated chemistry.
How does Sorbitan Sesquicaprylate work chemically?
The molecule is a nonionic partial ester mixture with a dehydrated sugar-alcohol core and roughly 1.5 short fatty-acid chains, giving it amphiphilic behavior and a low-to-mid HLB profile. Typical use is about 0.5 to 3% as a co-emulsifier or solubilizing surfactant, with best stability in standard cosmetic pH ranges and reduced ester stability at strong acid or alkaline extremes.
Last updated 2026-05-13