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  • chelating shampoos and ph

    Posted by Nihed on September 6, 2022 at 10:18 pm

    Hi everyone! I’d like to ask some questions that have been on my mind for a while, hope to find some answers !

    - What is the acceptable percentage of surfactants a shampoo should contain?

    _ How much of a chelating agent should be in a chelating shampoo and what is the maximum percentage and the right PH?

    - What is the right PH for a normal shampoo and conditionner?

    -Should I add an emulsifier when formulating a shampoo or does the surfactants in it do the job ?

    Nihed replied 5 months ago 2 Members · 1 Reply
  • 1 Reply
  • Nihed

    Member
    September 7, 2022 at 10:11 pm

    @Paprik thanks for your answers

  • Paprik

    Member
    September 7, 2022 at 1:39 am

    - What is the acceptable percentage of surfactants a shampoo should contain?
    I don’t think there is one. It really depends. However keep in mind that hair = lot of surface to clean. So usually shampoos have higher surfactants input. 
    It also depends on what type of surfactant are you using and what type of hair is it for. 

    - How much of a chelating agent should be in a chelating shampoo and what is the maximum percentage and the right PH?
    Not all surfactants require chelating agent. If they do, check supplier data for recommended inputs and required pH. 
    E.g. shampoo with sulfates would required a chelator, I’d use diNA EDTA at 0.1 - 0.2%.

    - What is the right PH for a normal shampoo and conditionner?
    Shampoo - I’d say 5 - 5.5.
    Conditioner - lower pH - 4 - 4.5.

    -Should I add an emulsifier when formulating a shampoo or does the surfactants in it do the job ?
    No, you don’t need to. Unless you’re making some kind of hydrating shampoo lotion :D