Trideceth-6 Phosphate

Trideceth-6 phosphate is a synthetic surfactant and emulsifying agent derived from tridecyl alcohol and phosphoric acid. It belongs to a class of ingredients designed to blend oil-soluble and water-soluble components, preventing separation in skincare formulations.In cosmetics, this ingredient works behind the scenes rather than directly on the skin. Its primary role is functional: to maintain the stability and texture of creams, serums and lotions by reducing the interfacial tension between oil and water phases.

Trideceth-6 phosphate functions as an emulsifier by positioning itself at the boundary between oil and water molecules. One end of the molecule is water-loving (hydrophilic) whilst the other is oil-loving (lipophilic), allowing it to stabilise both phases simultaneously.This prevents the natural separation that would otherwise occur, allowing formulators to create stable products with desirable textures. The ingredient does not directly interact with skin cells; rather, it ensures that active ingredients remain evenly dispersed and stable in their delivery system.

This ingredient is used in finished formulations by manufacturers; consumers do not need to adjust usage frequency or concentration. Simply use the product as directed. Its presence ensures that the formula remains stable and performs as intended from first use to the last application.

Trideceth-6 phosphate is generally well-tolerated in cosmetic formulations. Allergic contact dermatitis is rare, though individuals with extreme sensitivity to surfactants may wish to patch test first.