Namely
Ammonium laurylsulphate or ALS is an anionic surfactant. It is therefore widely used in shower gels and shampoos. It seems that it is a little less irritating than its false brother SLS (Sodium Lauryl Sulphate). It is authorized in organic.
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