Namely
Potassium Cetyl Phosphate is the potassium salt of esters of phosphoric acid and cetyl alcohol. This fatty alcohol derivative is generally used as a co-emulsifier with low-HLB non-ionic compounds, and is not considered a skin irritant.
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