Is Sorbitan Olivate natural?

Made by internally dehydrating sorbitol, itself from glucose, to sorbitan, then esterifying with olive oil fatty acids. Both the polyol and acyl portions are plant-derived.

Sorbitan Olivate is synthesized through a two-step process involving the production of sorbitan esters followed by their esterification with oleic acid. First, sorbitol, a sugar alcohol derived from glucose, undergoes dehydration to form sorbitan. This reaction typically involves heating sorbitol under vacuum or in the presence of an acid catalyst (like sulfuric acid or p-toluenesulfonic acid) to remove water molecules and form cyclic ethers. Temperatures for this dehydration step can range from 120-180°C.

Following the formation of sorbitan, it is then esterified with oleic acid. Oleic acid is a monounsaturated fatty acid obtained from the saponification or hydrolysis of triglycerides found in vegetable oils. The esterification reaction involves reacting the hydroxyl groups of sorbitan with the carboxyl group of oleic acid, typically under elevated temperatures (180-250°C) and often in the presence of a catalyst such as a metal alkoxide (e.g., sodium methoxide) or an acid catalyst. Water is removed as a byproduct to drive the reaction to completion.

The resulting product is a mixture of mono-, di-, and tri-esters of sorbitan with oleic acid, with the specific composition depending on the molar ratio of reactants and reaction conditions. Purification typically involves neutralization of any catalyst, removal of unreacted fatty acids and sorbitol through washing or distillation, and filtration to obtain the final product. The process yields a non-ionic surfactant with emulsifying and emollient properties.

Sorbitan Olivate is a cosmetic ingredient designed to help mix oil and water-based components in products like lotions and creams, making them smooth and stable. It also acts as an emollient, providing a soft and smooth feel to the skin. Think of it as a gentle helper that keeps your skincare products from separating and leaves your skin feeling conditioned.

CosIng definition: D-Glucitol, 1,4-Anhydro-, 6-monoester with olive oil fatty acids