Home Cosmetic Science Talk Formulating NIACINAMIDE

  • NIACINAMIDE

    Posted by imanebouziane on August 14, 2023 at 6:03 am

    HI

    I formulated an o/w cream, and I did the stability tests, and it is stable, and I wanted from the same formula to reduce 4% of the water and to put niacinamide instead, so there the cream certainly has a very good texture but testing it with centrifugation at 3500 rpm for 30 min then there is a separation. can someone guide me? I tried two formulation methods 1: dilute niacinamide in the water of the aqueous phase and emulsify by controlling the temperature (not exceeding 75°C) and the 2nd: add niacinamide to the cold phase but always separation of the emulsion. what is wrong here?

    👉i used stearic acid 2%

    emulagde 1000 ni 4 % CUTINA GMS 2% USING high shear 30 till 65°C then low shear till 45°C checking ph 5.6

    any advices😊

    griselhough replied 1 week, 4 days ago 4 Members · 3 Replies
  • 3 Replies
  • zoya

    Member
    August 14, 2023 at 7:10 am

    Hi,

    Could you provide any more details? (at least full inci, final pH). How does the separation look?

    Also, have you already done a knock-out experiment? Is the ‘base’ stable without NA?

    • This reply was modified 1 month, 1 week ago by  Zoya.
  • ketchito

    Member
    August 14, 2023 at 7:39 am

    When you say that your original formula passed the stability tests, what tests did you do and for how long? Centrifugue aloneis not such a hard condition (many unstable emulsions can pass the centrifugue and the separate during the accelerated stability).

  • griselhough

    Member
    September 12, 2023 at 11:23 pm

    When you say that your original method passed the stability tests, what tests were done and for how long? slope game

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