Ethoxydiglycol

Ethoxydiglycol (also known as diethylene glycol monoethyl ether or Transcutol) is a synthetic glycol compound widely used in cosmetic formulations. It functions as a solvent, humectant, and penetration enhancer, helping to dissolve other ingredients and draw moisture into the skin.In skincare products, it typically appears at concentrations of 10–15%, though it's relatively uncommon, found in less than 1% of formulations. Its chemical structure allows it to interact with both water-loving and oil-loving ingredients, making it useful for creating stable, well-integrated formulas.

Ethoxydiglycol acts as a humectant by attracting and binding water molecules from the environment and deeper skin layers, drawing them toward the outer epidermis. This helps maintain hydration in the stratum corneum (the skin's outermost layer).Additionally, it functions as a penetration enhancer. Its chemical structure allows it to temporarily and reversibly modify the skin barrier, creating a more permeable pathway for active ingredients. This means serums, treatments, and actives formulated with ethoxydiglycol may penetrate more effectively than they otherwise would, potentially increasi…

Products containing ethoxydiglycol work best when applied to clean, damp skin, as the ingredient's humectant properties are enhanced by existing moisture. Follow with an occlusive or emollient product if skin is dry, to seal in hydration. There is no need for special application techniques; use the product as directed on the label.

Ethoxydiglycol is generally well-tolerated and approved for use in cosmetics across major regulatory bodies. It is not known to be comedogenic and is suitable for most skin types, including sensitive skin.