Namely
Poloxamer 407 is a nonionic surfactant belonging to the class of copolymers. It is used in cosmetics to dissolve oily ingredients in water. It is often found in mouthwashes.
Its functions (INCI)
Emulsifying : Promotes the formation of intimate mixtures between immiscible liquids by modifying the interfacial tension (water and oil)
Surfactant : Reduces the surface tension of cosmetics and contributes to the even distribution of the product when it is used