Comparison of pro polymer and HEC for Gel Formulation: Electrolyte Compatibility and Mixing

Hello,

Based on the conversation between you and our staff, here is an explanation of the differences and considerations when choosing between pro polymer and Hydroxyethyl cellulose (HEC):

Key Differences between pro polymer and HEC:

1. Compatibility with Electrolytes/Salts:

   • pro polymer: Weakens and cannot form a stable gel when the formula contains a significant amount of electrolytes/salts/sodium.
   • HEC (Hydroxyethyl cellulose): Is compatible with electrolytes and can form a gel normally even in formulas with high electrolyte content. This is the main reason HEC is recommended instead of pro polymer in formulas containing ionic ingredients or salts.

2. Mixing Method and Gel Formation:

   • pro polymer: Forms a gel quickly at room temperature with simple stirring or mixing, taking only a few minutes (less than 3 minutes) and requiring no heat.
   • HEC (Hydroxyethyl cellulose): Requires heat (around 60-70°C) for gel formation, which takes more time and energy. Additionally, the heat used can potentially affect the quality of some heat-sensitive ingredients.

Summary of Pros, Cons, and Usage:

• Choose HEC when: The formula contains a significant amount of electrolytes/salts/sodium, where pro polymer cannot function effectively.
• Choose pro polymer when: The formula does not have electrolyte issues and you need a fast, energy-efficient method for gel formation, and the ingredients are not sensitive to heat.

HEC is popular in many products due to its compatibility with a wide range of substances, especially ionic or salt-containing active ingredients, which is a limitation for some polymer types like pro polymer.

Hope this information is helpful for choosing the right polymer!