Black Plastic Airless Bottle, 50 ml

Airless bottle, plastic black, 50 ml, is a complete set of a bottle with a piston base and a top with a pump, which dispenses the contents without allowing air to be drawn into the bottle. It is particularly suitable for creams, serums, gels and emulsions that need to remain stable and hygienically sealed for as long as possible – that is, for formulations with sensitive active ingredients, plant oils or milder preservation systems. The black opaque bottle also protects the contents from light, making it suitable for formulations with antioxidants, vitamins or essential oils that lose their efficacy when exposed to light. The set is declared suitable for contact with cosmetics. It is not approved for contact with food and is intended for cosmetic use only.

How the airless system works

A regular pump bottle draws the contents up through a tube and lets air in with every press. An airless bottle has no tube. At the bottom there is a movable piston that shifts slightly upward with each press of the pump and pushes the contents towards the outlet. This creates a vacuum inside the bottle, so the contents are not in contact with air or fingers.

In practice, this offers four benefits:

• Lower oxidation – the contents come into less contact with air, so plant oils, vitamins and other sensitive ingredients deteriorate more slowly.
• Hygienic dispensing – contaminants from hands cannot enter the bottle, which makes it easier to work with formulations that use a milder preservation system.
• Emptying almost to the last drop – the piston pushes the contents out evenly, leaving minimal residue in the bottle.
• Use in any position – since the system has no suction tube, the pump works even when the bottle is turned upside down.

Which products is it suitable for

Airless dispensing works best with products of medium viscosity: facial and eye creams, light to medium-thick emulsions, serums on an emulsion or gel base, gel creams or tinted foundations. The 50 ml volume corresponds to a standard size for a facial cream or serum lasting several weeks of use.

Less suitable are very thin aqueous solutions and tonics, which may drip from the outlet, and conversely very firm balms or butters that the pump cannot push through. With pure oils and oil-based serums, dispensing usually works, but it depends on their viscosity. We recommend testing with the specific formulation.

Nominal and total volume

Nominal volume is the volume for which the container is designed for standard filling. Total volume to the brim is the physical volume up to the neck and is slightly larger. The difference provides a reserve for the pump top and for the expansion of the contents with temperature changes. The bottle should therefore be filled to the nominal volume, not to the brim – otherwise the top cannot be fitted properly and some of the contents will be pushed out when closing.

Filling and preparation

Before filling for the first time, we recommend washing both the bottle and the top, disinfecting with isopropyl alcohol or ethanol, and allowing them to dry completely. The contents are filled from above into the open bottle; a spatula or filling syringe can help when filling thicker creams. When filling, it is a good idea to tap the bottle gently on a surface to release any air bubbles. Trapped air reduces the reliability of the piston. After screwing on the top, press the pump several times until the system is primed and starts dispensing.

Good to know

• Material – both the bottle and the top are made of polypropylene (PP), making them lightweight and unbreakable, suitable for shipping and travel.
• Label – the smooth cylindrical wall is easy to label.
• Recycling – both components are made of polypropylene and belong in the sorted plastic waste stream.

Frequently asked questions