Yes, but pH alignment is the key challenge. L-ascorbic acid requires a pH below 3.5 for stability, while niacinamide works best at pH 5–7. Most cosmetic chemists recommend using a stable vitamin C derivative — such as sodium ascorbyl phosphate — to allow co-formulation at a compatible pH. AJ Cosmo Labs connects you with formulators experienced in exactly this trade-off.
Read the full guide on Niacinamide compatibility →