pH Adjustment for Serum Formulation Stability and Effectiveness

Based on the ingredients in your formulation, particularly Tranexamic Acid and the preservative system (Phenoxyethanol SA, also known as Optiphen Plus), adjusting the pH of the final product is recommended.

• Tranexamic Acid: This ingredient is typically most stable and effective in a pH range of 5-8.
• Phenoxyethanol SA (Optiphen Plus): This preservative blend contains Sorbic Acid, which is more effective at lower pH levels (below 6). The overall effective pH range for Optiphen Plus is generally 4-8.

Considering these factors, adjusting the pH of your formulation to be within the range of 5.0-6.0 would help ensure the stability and optimal performance of the active ingredients and the effectiveness of the preservative system.

You should check the recommended pH range for Luxury Cream Maker™ to ensure the emulsion remains stable at the target pH.

Always measure the pH of your final formulation and adjust as needed using a suitable pH adjuster (e.g., citric acid or sodium hydroxide solution) until the desired range is reached.