Serum Packaging Sizes That Fit Retail vs Clinic Channels
Fifteen, thirty, fifty or a hundred milliliters: serum packaging sizes for retail brands are decided by shelf economics, while clinic packs are decided by cost per treatment, and…
Packaging
Airless Pump vs Dropper for Retinol Serum: Compatibility, Oxidation and Cost
Retinol does not fail in the bottle because the formula was wrong. It fails because the package lets oxygen in twice a day for six months. When a…
Dropper, Airless Pump or Ampoule? Choosing Packaging Your Formula Can Survive In
Packaging is not a purely aesthetic decision. Oxidation, viscosity, dose control and filling tolerance all narrow your options. A practical selection guide with the failure modes we see most often.