• Formulating

  What am I doing wrong? Moisturiser splitting/creaming

  Posted by bcha7650 on February 21, 2025 at 11:49 pm

  Hi all,

  First - please be gentle. Long time biochemist, first time cosmetic chemist.

  I have created a moisturiser for skin whitening but following centrifugation (4,000 rpm; 10 min), there is a clear splitting with creaming on the top with a clear liquid. I am not sure what I am doing wrong and would really great appreciate the experience of the forum here.

  My formulation is below:

  I add a liquid (sulfurophane) at the end as the high temperatures during the emulsification process will destroy this natural product.

  I also noticed there was a tendency for this moisturiser to clump when it storage (~1 month).

  I feel my emulsifiers and stabilisers are off but not sure the best approach moving forward.

  Many thanks in advance for advice/help

  

  

  

  Abdullah replied 4 hours, 22 minutes ago 3 Members · 2 Replies
• 2 Replies

• 

  Graillotion

  Member

  February 22, 2025 at 3:22 am

  I saw a gelling agent…. GMS, and a fatty alcohol and a thickener…(stearic).

  I wouldn’t expect that to hold much together. Stearic does not emulsify until it is converted to a stearate soap at high pH. (I missed the part about pH?) Were you counting on that?

  How are competitive benchmarks held together?

  • This reply was modified 6 hours, 3 minutes ago by  Graillotion.
• 

  Abdullah

  Entrepreneur

  February 22, 2025 at 5:06 am

  What is NACL doing there?

  As your batch size is too small, i think it is just air that has been mixed during homogenization coming out.

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