SODIUM POLYNAPHTHALENESULFONATE
Sodium Polynaphthalenesulfonate is a polymer made from sodium salts of naphthalenesulfonic acids. It is neither an oil nor a botanical extract: its manufacture starts with a naphthalenesulfonic intermediate that reacts with formaldehyde and water under heat and pressure before it is neutralized with sodium hydroxide.
SODIUM POLYNAPHTHALENESULFONATE: what it is
Sodium Polynaphthalenesulfonate is a polymer made from sodium salts of naphthalenesulfonic acids. It is neither an oil nor a botanical extract: its manufacture starts with a naphthalenesulfonic intermediate that reacts with formaldehyde and water under heat and pressure before it is neutralized with sodium hydroxide.
The result is a polymeric substance, meaning one made from repeating units, rather than a single-molecule ingredient. That origin distinguishes it from Sodium Naphthalenesulfonate, which is not the polymeric form and is assessed separately for its own behavior.
SODIUM POLYNAPHTHALENESULFONATE: what it does in cosmetics
In cosmetics, Sodium Polynaphthalenesulfonate helps keep an emulsion stable and helps hold particles in suspension when they could otherwise separate or settle. In everyday use, that supports a product with a more even texture and appearance; it is not an active intended to treat the skin.
As a hydrotrope, it can help certain components remain in the water-based phase of a formula. That is a formulation contribution: it does not mean that the ingredient itself moisturizes, renews, or corrects a skin condition.
SODIUM POLYNAPHTHALENESULFONATE: conditions and care
The available safety assessment applies to cosmetics intended for skin in the evaluated practices and concentrations; it should not be extended to products that may be ingested or contact mucous membranes.
Products containing this ingredient
See which products include it and the name used in each composition.
