Glyceryl Undecylenate

Glyceryl Undecylenate is a glyceryl monoester—a compound formed by combining glycerin (a natural humectant) with undecylenic acid, a fatty acid. It functions as both an emollient and an emulsifying agent, helping to soften the skin and stabilise formulations by keeping oils and water-based ingredients blended together.This ingredient belongs to a family of glyceryl esters that are widely used in cosmetics as skin-conditioning agents. It appears in roughly 0.5% of skincare products and is valued for its role in maintaining product texture and skin feel.

Glyceryl Undecylenate functions in two ways. As an emollient, it sits on the skin surface and reduces water loss, leaving skin feeling soft. As an emulsifier, it has both water-loving and oil-loving components, allowing it to bind incompatible ingredients together in a stable formulation.Because it is derived from glycerin, it also has mild humectant properties, drawing small amounts of moisture into the outer layers of the skin.

Glyceryl Undecylenate is typically incorporated into formulations by manufacturers rather than used as a standalone product. Look for it in moisturisers, serums, and emulsified treatments where it contributes to texture and stability. It works well in combination with other hydrating and skin-conditioning ingredients, and there is no need to adjust your routine based on this ingredient alone.

Glyceryl Undecylenate is considered safe for cosmetic use and is well-tolerated by most skin types. There are no widely reported sensitivities or contraindications at typical concentrations.