Key takeaways
- Airless protects oxygen-sensitive actives and allows lower preservative levels.
- Droppers give dosing control but expose the formula to air on every use.
- Tubes are the cheapest protective pack and the easiest to recycle in mono-material PE.
Primary packaging is a formulation decision disguised as a design decision. The pack determines how much air and light the product meets, how accurately it doses, and how much preservative it needs.
Airless pumps are the strongest protection: the product never contacts air, the dose is metered, and the pack can be used to justify a lower preservative load. The cost is roughly double a tube, and the pack is harder to recycle because it contains a piston and a spring.
Droppers are the default for serums because they signal “treatment” and allow the customer to control the dose. They also expose the formula to air on every use, which is why vitamin C serums in droppers discolour faster than the same formula in airless.
Tubes are the workhorse: cheap, protective, and available in mono-material PE that recycles in standard streams. They are the right answer for cleansers, hand creams, sunscreens and anything where cost per unit matters more than ritual.
A useful way to decide: list the three failure modes that would generate the most returns for your product — oxidation, contamination, or over-dosing — and choose the pack that removes the most of them, then see if the cost still works.
Reference: Packaging supplier cost data, 2025
