Airless pumps made from oxygen-barrier plastics or opaque/amber glass are strongly recommended. Avoid any metal components in contact with the formula, as iron and copper ions catalyze oxidation. Nitrogen flushing during fill-and-finish is standard for premium Vitamin C products. Packaging engineers are available through AJ Cosmo Labs alongside cosmetic chemists, so you can align formula and packaging decisions early in development rather than retrofitting packaging later.
Read the full guide on Vitamin C formulation challenges →