Octoxynol-9

Octoxynol-9 is a synthetic surfactant derived from ethoxylated alkylphenols. It is produced through a chemical reaction involving phenol, ethylene oxide, and sodium hydroxide at elevated temperature and pressure. The resulting molecule has a structure that allows it to interact with both water-soluble and oil-soluble components.In skincare formulations, octoxynol-9 functions as an emulsifying and solubilising agent. It works to blend incompatible ingredients, stabilise product texture, and help distribute active compounds evenly throughout a formula. It is typically used at low concentratio…

Octoxynol-9 is a type of surfactant, meaning it has a molecular structure with both water-loving and oil-loving regions. This dual nature allows it to sit at the boundary between oil and water phases in a formulation, reducing surface tension and enabling them to mix smoothly rather than separate.When applied to skin, it also helps other ingredients penetrate evenly and remain in contact with the skin surface. This improves the consistency of product performance across different areas of the face or body.

Octoxynol-9 is a functional ingredient within formulations rather than an active you apply directly. Simply use products containing it as directed. There is no need to adjust frequency or quantity based on this ingredient alone. If you have very sensitive or reactive skin, patch test new products first, as sensitivity is typically related to other formula components rather than the octoxynol-9 itself.

Octoxynol-9 is considered safe for use in skincare at typical concentrations below 5%. It is generally well-tolerated. Some individuals with very sensitive skin may rarely experience irritation, though this is uncommon.