Am using hec as a thickiner for shower gel

Am using hec as a thickiner for shower gel But when i added some sodium cholride to raise the viscosity a little it goes down !!!!!! why 


  • Probably because you have too much in your formula already and adding more brings the salt curve down. Some surfactants have salts in them already but it's impossible to say anything without seeing what's in your formula.
  • em88em88 Member
    Maybe NaCl is not the right ingredient to increase viscosity. Not all sufactants react the same when salt is added. 
  • chemicalmattchemicalmatt Member, Professional Chemist
    Hydroxyethylcellulose will not support monovalent electroltyes (e.g. SLS, ALS) or amphiphiles (amphoterics) in high amounts well at all. That is why your viscosity was unstable even before you added NaCl. Try methylcellulose (Methocel from Dow) instead, you'll feel much better.  
  • HEC Is not compatible with some surfactants, use 20% salt solution,
    It is uncommon to have thickening problem on shower gel as it has high active matter on the formulation.
  • Base formulation guide
    1. SLES 70%.  15
    2. DEA      ..........2
    3. BETAINE.     ...7

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