Home Cosmetic Science Talk Formulating problem in makig SOAP BASE LIQUID FACE WASH

  • problem in makig SOAP BASE LIQUID FACE WASH

    Posted by UsmanAli on October 12, 2020 at 6:08 am

    I am making soap base face wash with fatty acid .
    the problem is, when I put the sample in room temperature its transparent but when I put it in little bit cold temperature about 10-15 degree Celsius its become freezed and looks like a white paste. after freezing when I put it again in room temperature its melt slowly and again become transparent as before
    in our region average temperature is 5-20 Celsius in month of December and January 
    formulation is:
    palmitic acid      0.5%
    lauric acid           12.5%
    myristic              2.5%
    potassium hydroxide      5.13%
    CAPB                    6%
    acrylate copolymer        10%
    water to make 100

    please help me to resolve this problem, how can i control its freezing point.
    thanks for reading

    UsmanAli replied 3 years, 4 months ago 3 Members · 8 Replies
  • 8 Replies
  • ketchito

    Member
    October 12, 2020 at 1:27 pm

    @UsmanAli It might be the case that not all of your fatty acids are completely neutralized. By the way, what’s your final pH? 

  • oldperry

    Member
    October 12, 2020 at 9:28 pm

    The problem you are experiencing is called the “cloud point.” 
    To solve it you have to find a way to reduce the cloud point of your system. Typically, this is done by adding some glycols.

  • UsmanAli

    Member
    October 14, 2020 at 12:17 pm

    @ketchito the final PH is 9-10

  • UsmanAli

    Member
    October 14, 2020 at 12:19 pm

    @Perry how to reduce cloud point please tell me. I haven’t experience in soap base face wash.

  • oldperry

    Member
    October 14, 2020 at 2:11 pm

    Typically, this is done by adding some glycols.”

  • UsmanAli

    Member
    October 19, 2020 at 6:14 am

    PROPYLENE GLYCOL  5% IS IN IT.

  • oldperry

    Member
    October 20, 2020 at 12:18 pm

    Propylene Glycol is not in your ingredient list.  But if 5% is in there, then you need to add more.

  • UsmanAli

    Member
    October 24, 2020 at 6:37 am

    @Perry
    sir i have again with 8% propylene gglycol but its still happening 
    its freezed again at 15 degree celcius

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