Home Cosmetic Science Talk Formulating ALS based cleanser/ Aqua SF1 question

  • ALS based cleanser/ Aqua SF1 question

    Posted by krupabrahmbhatt on September 25, 2017 at 4:42 pm

    Hi, I am trying to solve an aeration issue with an existing ALS based cleanser - production batches end up being super aerated, even with slow mixing. I know replacing the aqua sf 1 might be a way to go - but what should I replace with? Do I NEED a replacement or can I just thicken with salt and call it a day? Any other options? 

    52.8% water
    Tetrasodium EDTA 0.1%
    7.8% Aqua sf 1
    27% ALS
    8% CAB 35
    0.5% Euperlan PK 300
    0.5% Euxyl K 300
     3.15% Salt 

    DRBOB@VERDIENT.BIZ replied 7 years ago 4 Members · 6 Replies
  • 6 Replies
  • belassi

    Member
    September 25, 2017 at 4:59 pm

    That’s a lot of salt already. Perhaps too much. With that surfactant blend you shouldn’t need a polymer thickener. Do a salt curve analysis. Personally I hate SF1, only of use if you have an expensive vacuum mixer.

  • krupabrahmbhatt

    Member
    September 25, 2017 at 5:04 pm

    Thank you @belassi , We dont have a vacuum mixer.. : so ill stay away from the sf 1. I made a batch without any aqua sf -1 this morning, the system only took about 1.2% salt and it did thicken the system but it wasnt quite the same as with aqua sf 1. It was not “gel-ly” enough.. and since this is an existing product,  I want to try to be as close to the current product as possible. 

  • DAS

    Member
    September 25, 2017 at 6:32 pm

    7.8%?. That’s a lot, I never use over 1%. And you have a ph restriction. 
    You could use CMC, or HMC instead, it is more aproppiate for that use, but in the end you will have the same issue. 
    If you want a gelly product I suggest more surfactants and more salt. Perhaps 35% ALS and 1,5% salt. You could play with the % till you get the consistence you want.

    If you can’t you could do the batch, let it defoam overnight, and then add a prehidrated thickener and mix as shortly as you can.

  • krupabrahmbhatt

    Member
    September 25, 2017 at 7:04 pm

    Thank you @DAS Okay ill give the cellulose a shot and also try increasing the surfactant. Will let you know. 
    Do you think reducing the aqua to 1% might help the bubbles? Or will that not be enough to get rid of the aeration?

  • DAS

    Member
    September 25, 2017 at 10:23 pm

    It might, but that’s physics, so even if you reduce the gel and lower the viscosity a little bit you still have tiny air bubbles trapped. If there is air, agitation and high viscosity there is nothing you can do.

  • DRBOB@VERDIENT.BIZ

    Member
    September 25, 2017 at 11:31 pm

    You can add the SF 1 at the end sub surface.The viscosity will be low and if you use low stir/shear a minimal amount of air will be introduced.

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