Modifying Vitamin C E Ferulic Kit

Adding other active ingredients to a pre-formulated kit like the Vitamin C E Ferulic kit is generally not recommended. Here's why:

The Vitamin C E Ferulic kit is specifically formulated to stabilize L-Ascorbic Acid, which is a water-soluble form of Vitamin C, using Ferulic Acid and Vitamin E. Adding other ingredients can disrupt this delicate balance and compromise the stability and effectiveness of the original formula.

• Ethyl Ascorbic Acid: While Ethyl Ascorbic Acid is also water-soluble and stable, adding 5% to the existing kit could alter the overall concentration of actives and potentially change the pH, which is critical for the stability of L-Ascorbic Acid. The kit's stabilization system is optimized for L-Ascorbic Acid, and adding a different derivative might interfere with it.
• Perfect-C (Ascorbyl Tetraisopalmitate): Perfect-C is an oil-soluble Vitamin C derivative. The Vitamin C E Ferulic kit is likely a water-based or hydro-alcoholic formula designed for water-soluble L-Ascorbic Acid. Adding an oil-soluble ingredient like Perfect-C at 5% would likely cause the formula to separate and become unstable, as oil and water do not mix without appropriate emulsifiers, which are not present in the kit for this purpose.

For best results and stability, it is recommended to use Ethyl Ascorbic Acid or Perfect-C in separate formulations specifically designed for their solubility and pH requirements.