Polyquaternium 39 God Film-Forming Agent No known benefits Polyquaternium 39 at a glance Synthetic polymer An anti-static and film-forming agent + hair fixative Used in cosmetics in concentrations up to 3% for both rinse-off and leave-on products Ruled safe in its current usage Clear, viscous liquid in its raw form Polyquaternium 39 description Polyquaternium-39 is a synthetic polymer used in both skin care and hair care products. It can serve multiple functions, including as an anti-static agent, film-forming agent, and hair fixative. Polyquaternium-39 is used in cosmetics in concentrations up to 3% for both rinse-off and leave-on products. The independent Cosmetic Ingredient Review has ruled polyquaternium-39 safe in its current usage, where it determined in the amounts used in cosmetics it was nontoxic and non-irritating. In its raw form, polyquaternium-39 is a clear, viscous liquid. Related ingredients: Polyquaternium-51 Polyquaterniums Polymer