Home Cosmetic Science Talk Formulating Hard water shampoo

  • ketchito

    August 5, 2022 at 12:30 pm

    @shivani The main risk of hard water is for your product, especially if you have highly charged anionic surfactants (like Sodium lauryl sulfate). You could use a bit more that usual of your chelating agent. Sometimes mixtures of chelants work synergistically.

  • abdullah

    August 5, 2022 at 12:41 pm

    SLES is ok in hard and soft water. 

  • chemicalmatt

    August 5, 2022 at 3:02 pm

    INCREASE the chelating agent as you already surmised. Tetrasodium EDTA? Double or triple it. Easiest solution is often the obvious one. 

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