Preservative Options and Effectiveness for Cream Formulation
Question
Regarding the recommended cream formulation process using DMAE Liquid and Pro Polymer, can I use NaturePreserve™ Ultra at 1% or Mild Preserved Eco™ at 1% as the preservative? Are these concentrations sufficient, and what factors (like pH) should I consider for their effectiveness and safety?
Answer
Preservative Options for Your Cream
Regarding your question about using different preservatives in the staff's recommended formula, both NaturePreserve™ and Mild Preserved Eco™ can be considered, but there are factors to keep in mind:
- NaturePreserve™ Ultra (ID 520): The recommended usage rate is 0.75-2.0%, with 1.25% generally recommended. It is effective in a pH range of 3-6.
- Mild Preserved Eco™ (ID 1001): The recommended usage rate for general cosmetics is 1.0-1.5%. It is effective in a pH range of 4-9.
Using either NaturePreserve™ at 1% or Mild Preserved Eco™ at 1% falls within their respective recommended ranges. However, the final pH of your cream is critical for the preservative to work effectively. You need to ensure the pH is within the suitable range for the preservative you choose.
The staff's original recommendation of 1.25% NaturePreserve™ is the standard recommended concentration for that product to provide adequate preservation.
Important Note: If you intend to sell your product, it is essential to perform a challenge test on your final formula to confirm the effectiveness of the preservative system against microbial contamination.
