• Formulating

  How long do you mix your emulsions?

  Posted by Reno21 on June 29, 2025 at 4:29 pm

  Generally, how many minutes do you high shear mix your lotion emulsions?

  Let’s say a 50 gallon batch.

  Reno21 replied 4 hours, 54 minutes ago 2 Members · 2 Replies
• 2 Replies

• 

  Graillotion

  Member

  June 29, 2025 at 7:12 pm

  Shear is very emulsion dependent.

  I only do lab-scale….so I shear for 2 minutes at elevated temps, before lamellar structures are formed.

  I stir the entire time until pouring below 35 C.

  Some emulsifiers greatly benefit from one last kiss of shear below 40C. I know PCP is one that likes a late kiss of shear.

  So, question is essentially impossible to answer…without more details.

• 

  Reno21

  Member

  June 29, 2025 at 7:26 pm

  The emulsifyers are 4.5% GMS SE, cetyl alcohol, stearic acid, xanthan gum with a 14% additional oils. Medium lotion thickness.

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