• Formulating

  Curcylic 40 (60% Cocamidopropyl Dimethylamine. 40% Salicylic Acid)

  Posted by Nyatou on January 15, 2025 at 3:08 pm

  Hi

  I have made a body wash with SCI and CAPB and then I added 5% curcylic 40. What happened was that I lost all the viscosity and I had to add HEC to thicken it again.

  Does anybody know whether Cocamidopropyl Dimethylamine is compatible with SCI.

  Regards to everybody.

  Abdullah replied 1 month, 1 week ago 3 Members · 4 Replies
• 4 Replies

• 

  Abdullah

  Entrepreneur

  January 15, 2025 at 8:15 pm

  Sci is not stable at lower pH and Curcylic 40 may have reduced its ph too much.

  • 

    fareloz

    Member

    January 16, 2025 at 3:32 am

    I agree that it is exactly what happened. 5% of Curcylic is 2% of Salicylic Acid. Since pKa is below 3%, SA drops pH very much and the solution is losing the viscosity.

• 

  Nyatou

  DIY formulator

  January 16, 2025 at 6:45 pm

  Thanks @fareloz @Abdullah for the feedback. I decided to swap SCI for Sodium cocoyl glutamate.

  • 

    Abdullah

    Entrepreneur

    January 16, 2025 at 8:10 pm

    That is the same

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