Combining Vitamin C E Ferulic Base (100% Rate) with ATIP in Serum Formulation

The confusion regarding the "User Rate 100%" for Vitamin C E Ferulic (ID: 70) is a common point of misunderstanding.

1. Understanding "User Rate 100%" for Vitamin C E Ferulic

The product Vitamin C E Ferulic (ID: 70) is not a single raw ingredient but a complete, pre-stabilized serum base.

• It is a finished formula: It already contains 15% Ascorbic Acid, Vitamin E, and Ferulic Acid, carefully formulated in a specific solvent system (likely water-based) to ensure the highly unstable Ascorbic Acid remains stable and effective.
• "User Rate 100%" means "Use As Is": The technical instruction of 100% means the product is intended to be used directly as a final serum. It is a ready-to-use product.
• Why you cannot add other ingredients: Adding other ingredients, especially water-based ones, would change the delicate balance of the formula (e.g., pH, solvent concentration) and would likely destabilize the Ascorbic Acid, causing it to oxidize quickly and lose its effectiveness.

Conclusion for Formulation: If you want to make a serum with other ingredients, you should use raw ingredients like ATIP or Ascorbic Acid powder and formulate from scratch. If you use the Vitamin C E Ferulic product, you should use it alone.

2. Combining Vitamin C E Ferulic (ID: 70) and ATIP (ID: 499)

It is technically possible to combine the two, but it is not recommended for a simple home formulation due to stability and solubility issues.

• Solubility Difference:
  • Vitamin C E Ferulic (ID: 70) is a water-based solution (due to Ascorbic Acid).
  • Perfect-C™ (ATIP, ID: 499) is an oil-soluble Vitamin C derivative.
• Stability Risk: Mixing an oil-soluble ingredient (ATIP) into a water-based, pre-stabilized solution (Vitamin C E Ferulic) can compromise the stability of the Ascorbic Acid in the base. The formula is optimized for the stability of Ascorbic Acid alone.
• Formulation Difficulty: To properly combine them, you would need to create an emulsion (a cream or lotion) using an emulsifier to blend the oil phase (containing ATIP) and the water phase (containing the Vitamin C E Ferulic base). This is a complex step that requires specific formulation knowledge.

Recommendation:

It is best to choose one primary Vitamin C source for your serum:

1. For a potent, water-based serum: Use Vitamin C E Ferulic (ID: 70) as is (100%).
2. For a highly stable, oil-based serum: Formulate a serum using Perfect-C™ (ATIP, ID: 499) at a concentration of 2-10% in a suitable oil base (e.g., Squalane, light esters). This will be much more stable and easier to formulate.