Stabilizing Vitamin C in Water-Based Formulas with Antioxidants

Based on the previous discussion, here's a summary to answer your follow-up questions:

Regarding whether other antioxidants can slow down Vitamin C oxidation like Glutathione:
Not all antioxidants will have the same effect as Glutathione in this specific water-based formula. As mentioned previously, an antioxidant's effectiveness depends on its properties, such as whether it's water-soluble or oil-soluble, and how it interacts with Vitamin C in the solution. For example, Vitamin E is an antioxidant but is oil-soluble, making it less effective for stabilizing Vitamin C in a water-based solution compared to a water-soluble antioxidant like Glutathione.

Regarding using both Glutathione and other antioxidants:
Using a combination of antioxidants could potentially offer enhanced protection against oxidation, possibly by targeting different oxidation pathways or providing synergistic effects. However, just like using a single different antioxidant, the actual benefit and impact on Vitamin C stability would depend on the specific antioxidants chosen and would need to be confirmed through testing. Theoretical effectiveness doesn't always translate directly to practical results in a complex formulation.

In short, while other antioxidants might help, their effectiveness needs careful consideration based on their properties and compatibility with the formula, and combining them with Glutathione might offer further benefits, but this requires specific testing to confirm.