Home Cosmetic Science Talk Formulating Formulating a Co Wash

  • Formulating a Co Wash

    Posted by chemist1 on October 28, 2014 at 9:21 am

    I am trying to formulate a Co Wash for a customer.  My formula uses Water, Sodium Lauroamphoacetate (25%), Cetearyl Alcohol(8%), Behentrimonium Chloride(3%), Citric Acid and preservative.  When I try to make this, the product is water thin.  I am looking for a final product at 28,000 cps.  Am I using too much LAA or do I need to adjust the process?

    David replied 10 years ago 7 Members · 18 Replies
  • 18 Replies
  • OldPerry

    Member
    October 28, 2014 at 9:49 am

    Well, you don’t have a thickening agent so you might start by adding one.  Hydroxyethylcellulose might be a good choice.

  • Chemist77

    Member
    October 28, 2014 at 10:28 am

    I suggest you make the base first and then start adding the LAA and accordingly use the thickener suggested by @Perry if still you find a need for the thickener. But if you have an ASM issue then make use of the thickener from the beginning to maintain the viscosity. Btw I would throw in a little Cetyl alcohol as well to have a synergistic thickening in addition with the polymer. 

  • Bobzchemist

    Member
    October 28, 2014 at 12:55 pm

    Co wash???

    Why would anyone want to wash a Co?
  • Chemist77

    Member
    October 28, 2014 at 1:37 pm

    @chemist1 take 3-4% equal qty of cetyl nd cetostearyl , 0.5% GMS SE, 2% LLP, 3% conditioner sounds fine and start adding lauramine oxide till u get the optimize the wash off and viscosity parameters i just had a wild trial and i addes upto 6% LO worked out to be a thick enuff cream 

    as for evaluation u can do it the way best for u 
  • nasrins

    Member
    October 29, 2014 at 6:58 am

    @milliachemist why u use all them in abbreviation form! whats LLP,LO,SE?

  • Chemist77

    Member
    October 29, 2014 at 8:01 am

    @nasrins No offence but my post is pretty self-explanatory for a person who has a little know-how of very day today chemicals used in emulsions.

    cheers

  • nasrins

    Member
    October 29, 2014 at 9:13 am

    little know-how of very day today chemicals…

    uhum…

    [edited by moderator]

  • Chemist77

    Member
    October 29, 2014 at 9:36 am

    @Perry

    As a moderator please inform this lady that this forum is for civilized opinion posting and not for spoon-feeding, I could retaliate but this is against the decorum of this forum.
    Hope you take a suitable action on this and warn against such street character behavior.

    Thanks

  • OldPerry

    Member
    October 29, 2014 at 9:57 am

    Yes, there is no need for insults.

    We do have people of varying levels of expertise & in different parts of the world on the forum.  Not all abbreviations are universal in the industry so it is helpful to occasionally explain acronyms.  However, no one is under any requirement to do so & should not be insulted for not doing it.
    LLP = Light liquid paraffin
    SE = Self-emulsifying
    LO = Lauramine Oxide
    Thanks everyone for their contributions and please keep things civil.
  • Chemist77

    Member
    October 29, 2014 at 10:26 am

    @Perry To begin with beggars couldn’t be choosers, and if I need an info there is a way to ask and if someone denies it that doesn’t mean I have to show this kind of street urchin behavior. 

    Thanks 
  • Beaver

    Member
    October 29, 2014 at 11:01 am

    @Perry To begin with beggars couldn’t be choosers, and if I need an info there is a way to ask and if someone denies it that doesn’t mean I have to show this kind of street urchin behavior. 

     ” 
    Wow. Just wow. 
  • Bobzchemist

    Member
    October 29, 2014 at 12:20 pm

    Please, everyone, calm down. This is supposed to be a pleasant, helpful place where we all can share our experience and help each other solve problems. Insults are not good form. 

    I think that this has pointed out a need for an abbreviation/common term directory, maybe pinned to the top so that it’s easy to find. @Perry?
  • Beaver

    Member
    October 29, 2014 at 12:36 pm

    Brilliant idea! I remember Perry used to have a post on abbreviations on his blog. I hope he has a back up.

  • OldPerry

    Member
    October 29, 2014 at 1:39 pm

    Indeed I had one and still do.  Here it is…

    However, I like @bobzchemist idea of creating a more extensive one for this forum and pinning it at the top.
  • nasrins

    Member
    October 30, 2014 at 2:15 am

    @perry there werent in that table too…and the person who really insults wasnt me.

     

  • chemist1

    Member
    October 30, 2014 at 7:38 am

    Thank you for all of your input. After Perry’s response on thickeners, I began to think of alternatives that I had seen to increase viscosity and stabilize as well.
    I tried another batch yesterday where I added Hydroxypropyl Starch Phosphate to stabilize the emulsion.
    Overnight at 45C, it has stayed together.
    I will scale up and do full stability. I do appreciate everyone’s different aspects.

  • OldPerry

    Member
    October 30, 2014 at 9:31 am

    @nasrins - We’ll keep adding to the list of acronyms as they come up.

  • David

    Member
    November 16, 2014 at 9:02 am

    ..and remember not everybody is from the US here… besides good science should be clear and logic, not full of fuzziness that can be misinterpreted.

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