Compatibility and Usage of Phenoxyethanol SA with Light Cream Maker and Electrolytes

Compatibility and Usage Guidelines

1. Compatibility with Electrolytes

• Phenoxyethanol SA: Yes, Phenoxyethanol SA (eq. Optiphen Plus) is compatible with Light Cream Maker™ and extracts containing electrolytes.
• Preservative Dosage: You do not need to increase the amount of Phenoxyethanol SA to compensate for electrolytes. The preservative's efficacy is not directly affected by the presence of electrolytes. Use the standard rate of 0.5-1.25%.
• Emulsifier Dosage: However, you may need to increase the amount of Light Cream Maker™ (e.g., from 1% to 2-3%) because electrolytes cause this specific cream maker to lose viscosity (making the cream thinner).

2. Mixing Procedure

• Can it be mixed from the first step? It is not recommended to mix Phenoxyethanol SA in the first step.
• Recommended Step: It should be added in the final step when the temperature of the mixture is below 60°C.
• Reasoning:
  • Heat Sensitivity: High heat can degrade components like Sorbic Acid.
  • pH Control: Phenoxyethanol SA works best at a pH of 2.0-6.0. Adding it at the end allows you to adjust the final pH of the formula first.
  • Stability: Adding it last ensures the preservative system remains stable and effective throughout the shelf life.

3. Effect on Viscosity

• Electrolytes: Electrolytes from natural extracts will significantly reduce the viscosity of Light Cream Maker™.
• Phenoxyethanol SA: Since Phenoxyethanol SA contains Sorbic Acid (an organic acid), it acts as a mild electrolyte and may cause the cream to thin slightly further.
• Adjustment: If the cream becomes too thin, you can add more Light Cream Maker™ at the end and blend it in to restore the desired thickness.