It's important to differentiate a true airless bottle from a standard pump bottle, which is often mistakenly called "airless."
| Feature | True Airless Bottle | Standard Pump Bottle |
|---|---|---|
| Mechanism | Vacuum piston/diaphragm | Dip tube with simple pump |
| Air Intake | No air intake. The chamber is sealed. | Air enters the bottle to replace dispensed product. |
| Product Contamination | Highly protected from air and bacteria. | Exposed to air with each use. |
| Product Evacuation | ~95-99% (almost complete) | Less efficient, leaves product behind. |
| Cost | Higher | Lower |
