White Plastic Airless Bottle, 50 ml

The 50 ml airless bottle with cap is a complete set designed for cosmetic preparations that benefit from protection against air and light. The contents are not drawn up through a tube as with a conventional pump, but are pushed out from below by a piston, so no air enters the bottle during use. It is therefore particularly suited to serums, light creams and emulsions with active ingredients that are sensitive to oxidation.

The white opaque bottle made of polypropylene (PP) blocks light, is lightweight and shatter-resistant, making it suitable for travel and handbags. Included in the set is a white plastic cap that covers the pump head and protects it from dust and accidental pressing during transport. The set is declared as suitable for contact with cosmetic products. It does not have a food-contact certification and is therefore not used for food.

Why choose airless packaging

• Protection from air – the piston moves the contents towards the pump with each press and leaves no air pocket behind it. Ingredients prone to oxidation, such as vitamin C, retinol or unsaturated vegetable oils, therefore have more stable conditions during use.
• Hygienic dispensing – the contents do not come into contact with fingers or surrounding air, which is appreciated with preparations containing a lower proportion of preservatives. Airless packaging does not replace a preservative; it merely reduces the burden to which the formulation is exposed.
• Emptying with almost no residue – the piston pushes the contents all the way to the pump head, so no layer remains in the packaging that would need to be poured out or scraped out as with conventional bottles.
• Precise doses – the pump dispenses approximately 0.5 ml with each press, making it easier to recommend dosage to customers and to track consumption.
• Protection from light – the white opaque material transmits significantly less light than clear glass or PET, which is an advantage with photosensitive ingredients.

Which preparations is it suitable for

Formulations with medium consistency dispense best: facial serums, gel creams, fluids, light to medium-thick emulsions, eye creams, make-up primers or intensive night treatments with active ingredients. A volume of 50 ml corresponds to a standard packaging size for a facial cream or serum lasting several weeks of use.

Less suitable are very firm balms and butters that the pump cannot dispense, and preparations with larger particles (scrubs, products with sugar or salt crystals) that may clog the mechanism. With very thin, watery contents it is advisable to check whether the pump drips after pressing.

Nominal and total volume

Nominal volume is the quantity for which the bottle is designed under normal filling. Total volume to the brim is the physical capacity up to the neck and is larger. The difference provides a reserve for the pump head, piston travel and expansion of the contents with temperature changes. The bottle is therefore filled to the nominal volume, not to the brim. The exact values of both volumes are stated in the parameters.

How to fill and prime the packaging

Before the first fill, we recommend washing the bottle and cap, sanitising them with isopropyl alcohol or ethanol and allowing them to dry completely. The pump head is unscrewed from the thread, the contents are poured or pressed into the bottle body where the piston sits at the bottom. Thicker creams are best filled slowly while tapping the bottle body against a surface periodically to prevent air bubbles from being trapped in the contents. After screwing the pump back on, it is necessary to press several times until the mechanism is primed and the contents begin to dispense.

What is worth knowing

• The fill level is not visible – the white bottle is opaque and the piston moves out of sight. When selling, it is therefore advisable to state on the label the quantity and estimated number of doses so the customer knows what to expect.
• Reuse – the bottle can be refilled, but the piston and pump are not easy to clean and dry thoroughly. For serums and preparations with a low preservative content, we recommend using a new container instead.
• Material and contents – polypropylene tolerates both water-based and oil-based formulations well. With a high proportion of essential oils, alcohol or solvents, we recommend verifying the behaviour of the packaging with the specific formulation, including pump tightness, over several weeks.
• Heat – fill with contents cooled to room temperature. A hot emulsion may deform the material and, once cooled, create a vacuum inside the packaging that complicates dispensing.
• Labelling – the smooth cylindrical surface labels well. The cap is placed from above, so position the label so that it is not caught when removing the cap.
• Recycling – both the bottle and the cap are made of polypropylene; the packaging is placed in plastic recycling once empty.

Frequently asked questions