Sodium Laureth Sulfate. TEXAPON® NSO by BASF is a basic surfactant and foaming agent. It possesses outstanding detergency and cleansing quality, along with ability to easily get thickened with salt. This ingredient is a colorless, clear liquid of sodium lauryl ether sulfate with 2 EO. TEXAPON® NSO is used in cosmetic cleaning preparations such as shampoos, shower gels and foam baths.