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  • pepe

    Member
    November 25, 2014 at 7:11 am in reply to: biphasic hair mask

    nature of the chemistry…enough to get them together…not enough to generate a stable emulsion…it is just about the proportion of the silicone emulsifier 

  • pepe

    Member
    November 25, 2014 at 5:58 am in reply to: biphasic hair mask

    actually peg-12 dimethicone soluble in both oil and water…the sufficient amount of silicone emulsifier get two phase together and within the shortest possible time make them seperate…Because that ”sufficient amount” is not enough to emulsify them totally…;)

  • pepe

    Member
    November 25, 2014 at 3:16 am in reply to: biphasic hair mask

    but I recommend you to add some silicone emulsifer to the formula for better separation and better look…Like peg/ppg 18/18 or peg-12 dimethicone derivatives…Even you can use some amodimethicone ;)

  • pepe

    Member
    November 25, 2014 at 2:24 am in reply to: biphasic hair mask

    if your water is perfectly deionized distiled water then the addition of salt will increase the surface tension…

  • pepe

    Member
    November 22, 2014 at 5:36 am in reply to: biphasic hair mask

    Salts increase the surface tension of water because you are adding some ionic energy to the hydrogen-bond energy…This is why salts are used in a two phase conditioners. By increasing the surface tension of water in the biphase systems you shorten the separation time of two phases…

  • pepe

    Member
    October 25, 2014 at 3:12 am in reply to: Shaving Cream Formulating Tips
    @chemicalmatt ; using peg derivatives seems ok…I will try it in my first attempt. ;)

    @Belassi ; I have already used KOH instead of NaOH in the formulation. Sometimes I added some NaOH in the formulation in order to get thicker creams…Stearic acid and Coconut fatty acid we purchased are in good quality. Their Iodine numbers are quite high in comparison to others.
  • pepe

    Member
    October 25, 2014 at 2:51 am in reply to: Pearlizer and thickener in shampoo

    Try Cutina AGS ;)

  • pepe

    Member
    October 23, 2014 at 9:58 am in reply to: Shaving Cream Formulating Tips

    I am using lye solution to get a saponification reaction with Stearic acid…Also I am using some coconut fatty acid…This is why we have a high ph…

  • pepe

    Member
    October 23, 2014 at 4:07 am in reply to: Shaving Cream Formulating Tips

    Dear Bill,

    I have tried PEG 90M  in the formulation but just because of the high ph level (9-10) agglomeration-crystallization occured.
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