Slippery feel after washing

We are manufacturing Body wash.
But it feels slippery on the body after even washing with water three to four times.
We are using SLES (28%)--35 , Sodium Lauryl sarcocinate(30%)-10, CAPB (32%)--15, Citric acid (For to adjust pH to 5.5), TEA, Glycerin, Na Benzoate and EDTA.

Can any one please guide us..

Comments

  • Is not Surfctant level High?

  • Surfactant levels are fine
    SLES 9.8% active
    Na lauroyl sarcosinate 3% active
    CAPB might be a bit high, 4.8% (but it shouldn't increase slipperiness, just increase costs).

    Try without glycerin. It does nothing in rinse off applications.

    Please conduct microbiological challenge tests as I don't think Na-benzoate + EDTA is enough as preservative.

    Why TEA?
  • Thank you.
    Though Glycerin is used but it is only 0.5%. We have also tried by eliminating Glycerin, still it is slippery after washing.
    We have observed that by using Na lauroyl sarcosinate it is difficult to thicken it by NaCl, so we increase pH by TEA and then adjust it up to 5.5 by adding Citric acid, once it is achieved good thickness it self is achieved, no need to add NaCl for further thickening.

    What preservative can be used for this formulation?
  • GuntherGunther Member
    edited November 8
    You can do fine with a SLES + CAPB + tiny amount of salt as a body wash.

    To thicken Na lauroyl sarcosinate you'll need some thickener like Crothix, which greatly increases costs.

    For preservatives:
    methyl paraben <0.4%
    propylparabeb <0.14%
    EDTA <= 0.1% works fine and meets EU regulations (AFAIK)
    You can use the Sodium paraben salts as they are easier to dissolve, but make sure they don't interefere with SLES viscosity as they are salts as well.
  • Gunther said:
    You can do fine with a SLES + CAPB + tiny amount of salt as a body wash.

    To thicken Na lauroyl sarcosinate you'll need some thickener like Crothix, which greatly increases costs.

    For preservatives:
    methyl paraben <0.4%
    propylparabeb <0.14%
    EDTA <= 0.1% works fine and meets EU regulations (AFAIK)
    You can use the Sodium paraben salts as they are easier to dissolve, but make sure they don't interefere with SLES viscosity as they are salts as well.
    Thank you very much for this valuable suggestion.
    We will try accordingly.
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