Perfect C TransDerm Discontinuation, Pro Niacin vs. Niacinamide, and Compatibility with Perfect C

Based on the forum discussion:

1. Perfect C TransDerm: This product has been discontinued because the demand was not high enough to meet the manufacturer's minimum order quantity. Stocking large quantities would lead to product expiry and loss.
2. Pro Niacin vs. Vitamin B3 (Niacinamide): Vitamin B3 is Niacinamide. Pro Niacin is Myristyl Nicotinate. While both may offer some whitening benefits, they are considered different ingredients with potentially different primary functions. Pro Niacin is discussed more in the context of anti-aging. For specific concerns like melasma or freckles, other dedicated whitening agents might be more effective and cost-efficient than Pro Niacin.
3. Compatibility with Perfect C:
   • Vitamin B3 (Niacinamide) and Perfect C (Ascorbyl Tetraisopalmitate) are known to react quite quickly. Therefore, it is not recommended to mix them fresh right before use.
   • Pro Niacin (Myristyl Nicotinate) is compatible with several other forms of Vitamin C (such as ascorbic acid, Ethyl Ascorbic acid, Ascorbyl Glucoside, stabilized vitamin c). Compatibility specifically with Perfect C (Ascorbyl Tetraisopalmitate) was mentioned as being tested or uncertain in the discussion.
   • If a pre-formulated serum contains both Niacinamide and Tetrahexyldecyl Ascorbate (Perfect C), the concentration of Perfect C might be very low (potentially below 0.5%) to minimize the reaction and degradation, possibly included more for marketing purposes than significant efficacy.