CDEA

what is the use of CDEA in preparing liquid soap?

Comments

  • It's a secondary surfactant that improves foaming and adds viscosity. I like using it in sulfate-free products.
  • GuntherGunther Member
    It's a secondary surfactant that improves foaming and adds viscosity. I like using it in sulfate-free products.
    May I ask how much CDEA do you usually use?
    I found it leaves a sticky afterfeel over 1%
  • @Gunther I use 2% in a shampoo. Haven’t noticed any stickiness. Maybe it’s compensated by other ingredients..
  • svensven Member
    @ngarayeva001 thats about right 2% works well for me also. 
  • This is a shampoo formula. Total active surfactants 15%
    INCI %
    Aqua 48.5%
    Tetrasodium EDTA 0.2%
    Glycerin 1.0%
    Cocamidopropyl Betaine 20.0%
    Sodium C14-16 Olefin Sulfonate 5.0%
    Sodium Lauroyl Sarcosinate 17.0%
    Cocamide DEA 2.0%
    Polyquat 7 0.5%
    Polyquat 10 0.8%
    Amodimethicone 1.0%
    PEG-7 Glyceryl cocoate 1.5%
    Germaben II 1.0%
    Crothix Liquid 1.5%

    It's very mild conditioning formula. As you can see it's sulfate free and the surfactants used here are rather difficult to thicken. I use both CDEA and Polyquat 10 to add to viscosity. Crothix alone isn't sufficient here.
    By the way it will be clear if you heat the CDEA with a little bit of water before adding to other surfactants. Other than that it's cold process.
  • Another approach:

    INCI %
    Aqua 40.3%
    Tetrasodium EDTA 0.2%
    Glycerin 1.0%
    Cocamidopropyl Betaine 20.0%
    Sodium C14-16 Olefin Sulfonate 30.0%
    Cocamide DEA 2.5%
    Polyquat 10 1.0%
    Polyquat 7 0.5%
    Amodimethicone (emulsion) 2.0%
    Germaben II 1.0%
    PEG-7 Glyceryl cocoate 1.5%
    Citric Acid
    NaCl
    QS

    Here the viscosity is achieved with NaCl (not much), CDEA and Polyquat 10 without any crothix. It is deeply conditioning formula for everyday use (active surfactant about 15%). I used 2.5% of CDEA here but I wouldn't say it's sticky either.

  • svensven Member
    @ngarayeva001 i like the use of the sarcosinate. 
  • @sven you can exclude Olefin Sulfonate at all and the formula will be chrystal clear (it's still clear but olefin sulfonate is yellow). But then it would be very difficult to thicken. 
    I love Sarcosinate. It's very gentle and easy to work with. Zein protein and HET CAM tests show it's somewhere in the middle (moderately irritating) but when you mix it with CAPB it becomes very mild.
  • This is a shampoo formula. Total active surfactants 15%
    INCI %
    Aqua 48.5%
    Tetrasodium EDTA 0.2%
    Glycerin 1.0%
    Cocamidopropyl Betaine 20.0%
    Sodium C14-16 Olefin Sulfonate 5.0%
    Sodium Lauroyl Sarcosinate 17.0%
    Cocamide DEA 2.0%
    Polyquat 7 0.5%
    Polyquat 10 0.8%
    Amodimethicone 1.0%
    PEG-7 Glyceryl cocoate 1.5%
    Germaben II 1.0%
    Crothix Liquid 1.5%

    It's very mild conditioning formula. As you can see it's sulfate free and the surfactants used here are rather difficult to thicken. I use both CDEA and Polyquat 10 to add to viscosity. Crothix alone isn't sufficient here.
    By the way it will be clear if you heat the CDEA with a little bit of water before adding to other surfactants. Other than that it's cold process.
    Interesting formula.
    -  Is that 0.8% active PQ-10 (in powder form)?
    -  What's the emulsifier for amodimethicone?
  • Yes, PG-10 is in powdered form, PG-7 is liquid with low active %. Amodimethicone is an emulsion: Amodimethicone, trideceth-12, cetrimonium chloride. I have chemically treated and  damaged hair, so for me this amount of conditioner makes sense. Probably most of people need less.
  • AzizAziz Member
    @sven you can exclude Olefin Sulfonate at all and the formula will be chrystal clear (it's still clear but olefin sulfonate is yellow). But then it would be very difficult to thicken. 
    I love Sarcosinate. It's very gentle and easy to work with. Zein protein and HET CAM tests show it's somewhere in the middle (moderately irritating) but when you mix it with CAPB it becomes very mild.
    Have any way to make yellowish AOS clear ? 
  • Exclude olefin sulfonate at all. You will need more crothix to thicken it though.
  • Doesn't the high amount of CAPB makes it hard to thicken?
    Or does CAPB help thicken sarcosinates too, like it does with SLES?
  • Salt has no effect on Sarcosinate. CAPB is there for mildness.
Sign In or Register to comment.