If you have to decide between airless or pump bottles, let me provide some information to help you choose the best option for your product/formula.
Pump Bottles can vary quite drastically in price. Single wall bottles are less expensive than double wall bottles or heavy wall bottles. Typically you would use an airless option for higher viscosity products such as a heavy cream that may be more difficult to evacuate. If your product contains a high percentage of silicone, this should also be considered when selecting a package. For instance, this type of formula is not always best suited in an airless.
Airless Bottles are generally meant for higher end products and cost more than your standard pump bottles. Airless bottles also tend to provide greater product evacuation so the consumer can get more product out of the container. You can almost always count on 90-95% product evacuation when using an airless bottle. Great for various products from serums to foundations. Just make sure when using airless you always do evacuation testing to ensure your package is pulling the right amount of vacuum to dispense your formula properly.
We are here for all your bottle questions and are happy to recommend the right package for your project!