Diethylhexyl Sodium Sulfosuccinate

Diethylhexyl sodium sulfosuccinate is a synthetic surfactant — a molecule with both water-loving and oil-loving properties. It belongs to a class of ingredients called sulphosuccinates, which are commonly used in cosmetic formulations to help combine ingredients that wouldn't normally mix, and to enhance the cleansing action of products.In skincare, this ingredient serves primarily as an emulsifier and hydrotrope, helping to stabilise formulations and improve the delivery of active ingredients. It appears in a small proportion of skincare products, typically in cleansers, serums, and other …

Diethylhexyl sodium sulfosuccinate works by reducing the surface tension between water and oil, which allows these otherwise incompatible substances to blend smoothly. In cleansing products, this action helps to lift dirt, sebum, and makeup from the skin. In other formulations, it acts as a hydrotrope — a substance that increases the solubility of other ingredients, ensuring they remain evenly distributed throughout the product rather than settling or separating.

This ingredient is typically used as part of a complete formulation rather than as a standalone treatment. When using a product containing it, follow the instructions provided — for cleansers, this usually means applying to damp skin, massaging briefly, and rinsing thoroughly. For other formulations, use as directed by the manufacturer.

Generally well-tolerated in cosmetic concentrations. Avoid contact with eyes; if irritation occurs, discontinue use and rinse thoroughly.