• Formulating

  40% Urea is not dissolving in water phase

  Posted by ProfessorHerb on October 4, 2022 at 11:37 pm

  Its not dissolving in a hyaluronic acid base with 10% glycerine. It only dissolves with gentle heating.

  ProfessorHerb replied 3 years ago 1 Member · 1 Reply

  • urea
• 1 Reply

• 

  ProfessorHerb

  Member

  October 4, 2022 at 11:41 pm

  It sometimes crystalizes by cool down and I have to reheat to dissolve.

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