Stable Foaming And Improved Quality, Producing Dense Foam, Suitable For Amino Acid Systems HEC HEC Introduction: HEC is a premium, multi-functional rheology modifier for shampoos, derived from natural cellulose, that thickens quickly without neutralization. It creates a luxuriously silky cream texture, improves pump dispensing experience, locks in pearlescent and active ingredient particles with excellent suspending ability, and prevents stratification and separation during