Sodium Cocoyl Methyl Isethionate

Sodium Cocoyl Methyl Isethionate

SCI (Sodium Cocoyl Isethionate) is a commonly used anionic, sulfate-free surfactant, loved by syndet makers for it’s mildness and creamy lather.  However, due to its poor water solubility it is usually replaced with SLMI (Sodium Lauryl Methyl Isethionate) in liquid products. SCMI (Sodium Cocoyl Methyl 

Sulfate-Free Surfactants

Sulfate-Free Surfactants

I love this handy chart from Innospec’s presentation: “Formulating High Performance Sulfate-Free Cleansing Products”. ⁣⁣As you can see, surfactants have a working pH range. Some surfactants can hydrolyze at a low pH (SCI, Iselux, Sulfosuccinate). ⁣ As most surfactants are diluted, we have a handy 

Surfactant Active Matter Calculator

Surfactant Active Matter Calculator

Surfactant Active Matter Calculator Shower gel, shampoo and face cleansers usually contain at least two surfactants to make the formulation milder and more effective.  As surfactants sold by ingredient suppliers are diluted it can be challenging to know exactly how much surfactant is in a