Namely
Sodium Coceth Sulphate is an anionic surfactant equivalent to Sodium Laureth Sulfate. It is found mainly in some makeup remover and bath products.
Its functions (INCI)
Cleansing : Helps to keep a clean surface
Foaming : Capturing small air bubbles or other gases in a small volume of liquid by changing the surface tension of the liquid
Surfactant : Reduces the surface tension of cosmetics and contributes to the even distribution of the product when it is used