Compatibility of Your Serums

Based on the information provided by the staff, mixing your current serum (containing Vitamin B3, Sea Kelp Bioferment, DMAE, N-Acetyl-D-Glucosamine, and Hyaluronic Acid) with a 20% Vitamin C serum (likely L-Ascorbic Acid) is not recommended due to compatibility issues.

Here's why:

• High Concentration of Sea Kelp: The staff noted that 25% Sea Kelp Bioferment is quite high and may not fully absorb into the skin. A concentration of around 10% is suggested.
• pH Incompatibility with L-Ascorbic Acid: A 20% L-Ascorbic Acid serum is highly acidic (pH ~3-3.5). Most ingredients in your existing mix, including Vitamin B3, DMAE, and N-Acetyl-D-Glucosamine, are not stable or effective at such a low pH. This combination could reduce the efficacy of these ingredients and potentially cause skin irritation. Only Sea Kelp is likely to remain stable in this acidic environment.
• Recommended Vitamin C Form: If you want to combine Vitamin C with ingredients like Vitamin B3 and N-Acetyl-D-Glucosamine, the staff suggests using Magnesium Ascorbyl Phosphate (MAP). This form of Vitamin C is more stable at a higher pH (optimal range is 6-7), which is more compatible with those ingredients.
• DMAE and Vitamin C MAP: DMAE is acidic, while Vitamin C MAP prefers a less acidic environment. Combining them can be problematic. If you include both, you might need to use a low concentration of DMAE, omit it, or carefully adjust the pH to 6.5-7.0.

The staff proposed a compatible and effective formula combining some of these ingredients:

• Sea Kelp 10%
• Vitamin B3 5%
• N-Acetyl-Glucosamine 5%
• Vitamin C MAP 10%

This adjusted formula avoids the pH conflicts encountered when mixing your original serum with a high-concentration L-Ascorbic Acid serum.