Any tip for processing high surfactant content cleanser?

I was working on a formula provided by the supplier. The GCS powder is a light free flow powder. As soon as I add them into either water or glycerin, they generate tons of foam. I tried to use a vacuum to de-gas. But the foam is too creamy to get rid of. 

Does anyone have the experience to incorporate this powder surfactant? What order of adding material should I follow?

Water35.4
Sodium Cocoyl Glycinate, powder18
Glycerin38
Cocamidoproptyl Betaine, 30%4
Polyquaternium-39, 10%1
Lauric Acid0.4
Myristic Acid1
Stearic Acid0.4
Glycol Distearate1
Behenyl Alcohol0.3
Citric Acid0.5

Comments

  • PaprikPaprik Member
    How are you mixing? 
    When mixing small batches, it's usually hard to prevent foaming. 
    If you will use low shear, it should keep it relatively "calm". However, if you get foam, it should go away by the next day. 

    A few questions. I don't see any preservative? I guess you have one and just did not listed? 
    Why so much glycerin? 38% That is whipping lot. (But I saw this in one formula - was checking some suppliers now. Was for cream-type face wash. However I don't think it's necessary. )
  • Does Sodium Cocoyl Glycinate dissolve in water property and become clear? 

    In my experiments you need to heat some water to dissolve powder surfactants. 

    Why so much Sodium Cocoyl Glycinate? 

    You can not dissolve too much of powder surfactants in water. 
    I don't know about this surfactant but for AOS, there is 39% solution available but you can not dissolve 39% powder AOS in water. 
  • Paprik said:
    How are you mixing? 
    When mixing small batches, it's usually hard to prevent foaming. 
    If you will use low shear, it should keep it relatively "calm". However, if you get foam, it should go away by the next day. 

    A few questions. I don't see any preservative? I guess you have one and just did not listed? 
    Why so much glycerin? 38% That is whipping lot. (But I saw this in one formula - was checking some suppliers now. Was for cream-type face wash. However I don't think it's necessary. )
    I forget to add the preservative. I was using 1% PE 815. I think the high amount of glycerin is to help  SCG to crystalize when the whole batch cools down.
  • Try adding water last if possible. Pre-disperse surfactants im glycerin. Don't pour the water from a high height and break the water's fall with something (like a spatula.) Not sure if this helps, sorry.
  • emma1985 said:
    Try adding water last if possible. Pre-disperse surfactants im glycerin. Don't pour the water from a high height and break the water's fall with something (like a spatula.) Not sure if this helps, sorry.
    Thank you. Will try that
  • chemicalmattchemicalmatt Member, Professional Chemist
    How often have I said this: friends don't let friends abuse glycerin. Too many formulators are co-dependent with it ("glyceroholics" maybe?) and there needs to be an intervention. LOSE THE GLYCERIN, all it does is reduce viscosity and foam (you do want some right?) then rinses away into the sewer because glycerin would much prefer to be an effluent than a hydrator, moisturizer, humectant, whatever. Heat 70% deionized water up to 75C, then add the CAPB and use MORE of that because it is a hydrotrope: makes things like SCG and all those fatty acids get along well with water. Then under very slow mixing add the SCG and mix until dissolved. Now add your copious builders, then the cationic polymer leaving pH at 7.0 or higher lest those fatty acids ppt out. A touch of Kathon CG & Versene 100 there and you're set. Also, @Abdullah has a point: reduce the SCG and increase the CAPB and you'll feel better afterwards. I'd like to know the identity of this supplier so I can call 'em up and give 'em a what fer'.
     
Sign In or Register to comment.