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40% Urea is not dissolving in water phase
ProfessorHerb
Member
October 2022
in
Formulating
Its not dissolving in a hyaluronic acid base with 10% glycerine. It only dissolves with gentle heating.
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Urea
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ProfessorHerb
Member
October 2022
It sometimes crystalizes by cool down and I have to reheat to dissolve.
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October 2022
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