How to Sterilize powders or clays before adding them to emulsions

Often times adding clays or powders to lotions may make them harder to sterilize. I suggest you sterilize the powder or pigment before adding them you formations that contain water. It is quite simple and straightforward.  copyright diycosmetics.com 2017

Ref: Martindale Pharmacopoeia

  1. Completely remove all moisture from the powder by putting it into at over on low heat (100 degree C). Do this for about 15 minutes.
  2. Bake the powder at 160 degrees C for at least one hour.
  3. Decant into an sterile container till ready to use.

5 thoughts on “How to Sterilize powders or clays before adding them to emulsions

    1. Thank you for your comment Phil. I have used this method for years and did make a change because F is in error it should be Centigrade Temperature. I first found this method outlined in Martindate British Pharmacopoeia so assume it is correct but I have never gone the next step to test it in a aqueous solution. You would know better on that point. Rebecca

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