• Formulating

  how to overcome curdling problem in mineral based sunscreen

  Posted by kajalthakur on October 15, 2024 at 3:23 am

  mineral based sunscreen

  Hello ,

  i am facing a problem of curling in mineral based sunscreen . After curdling spindle speed reduce and when i do hand mixing it uniform again . Can you please suggest me to overcome these problem.

  Zinclear xp65 coco disersion 13%( contain 65% of zinc oxide )

  Tio2 dispersion 1% ( contain 55% of Tio2)

  Emusifier _

  Glyceryl Stearate Citrate (and) Cetearyl Alcohol (and) Glyceryl Caprylate 3%

  Glyceryl MonoStearate -2%

  Hydrogenated Soy Polyglycerides (and) C15-23 Alkane.-1%
  

  Olivem 100 -2%

  Olivem 300 -2.%

  Olivem 2090-1%

  
  

  Process :I emulsify and then i add dispersion phase at 50*c . At last I add citric acid , perfume , preservative and vit E.

  kajalthakur replied 1 month, 2 weeks ago 2 Members · 2 Replies
• 2 Replies

• 

  chemicalmatt

  Member

  October 30, 2024 at 10:17 am

  Doing the math here - and excluding the coating on those UV screen minerals - I see you have 10.0% emulsifier-builder to emulsify 1.0% oil. That alone is not going to work. This puppy wants to invert Big Time. You also did not divulge your presumably external water phase, so all hope is lost here; and what’s up with the citric acid?

• 

  kajalthakur

  Member

  November 7, 2024 at 2:17 am

  @chemicalmatt i added citric acid at the end of the formula to decrease the PH, its above 7 .

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