Cosmetic Science Talk

Cosmetic Science discussion forum. For people who want for formulate cosmetics and get advice from other formulators around the world.
*** Click on one of the three Forum categories below to start a new discussion ***

Home Cosmetic Science Talk Formulating How to keep anhydo formulations evenly mixed

  • How to keep anhydo formulations evenly mixed

    Posted by DoctorBotanica on February 7, 2023 at 2:00 am

    Zinc oxide, kokum butter, squalane, very basic. The kokum and squalane don’t always mix well and the zinxc oxide settles. Not sure how to incorporate these ingredients.

    MarkBroussard replied 1 month, 2 weeks ago 3 Members · 2 Replies
  • 2 Replies
  • fareloz

    February 7, 2023 at 5:13 am

    Zinc Oxide is not soluble in water\oils. It is usually micronized and evenly dispersed is some medium like silicones (especially in sunscreens). In homemade products your only option is to shake the bottle.

  • MarkBroussard

    Professional Chemist / Formulator
    February 7, 2023 at 9:11 am

    You’ll need to add Polyhydroxystearic Acid to get an even distribution of the Zinc Oxide. If you are using ZnO powder, it is much easier if you use a ZnO premix such as those provided by Antaria or Grant Industries.