Aluminium Bottle, 24/410, Black Mat Plastic Cap, 200 ml

The 200 ml aluminium bottle with a matte black cap is intended for filling liquid cosmetic products that are dispensed by pouring: body and massage oils, shampoos, shower gels, hair waters and toners. Aluminium blocks light, so it protects the contents from UV radiation much like amber glass, yet it weighs a fraction of a glass bottle and does not break when dropped. It suits the bathroom, travel and smaller production runs where the weight of the shipment matters.

The set consists of a silver bottle with a 24/410 neck finish and a polypropylene cap in a matte black finish. The cap screws directly onto the neck, and black plastic on silver metal looks clean and simple. Both the bottle and the cap are declared suitable for contact with cosmetic products; you will find the declaration of conformity on the product page.

Suitable uses

• Oils and oil serums – body, massage and hair oils or blends of carrier oils. Light speeds up their yellowing and change of scent, and opaque packaging slows this process down.
• Shampoos and shower gels – thicker liquids that are poured into the palm. For dispensing, it is enough to tilt the bottle, as the 24 mm neck lets even a more viscous gel through.
• Hair tonics, body waters and toners – water-based or alcohol-based products with low viscosity. For these contents, we recommend testing the behaviour of the packaging beforehand; details are below.
• Travel and gift packs – the bottle does not break in luggage, and its weight is hardly noticeable in a shipment.

Nominal volume and brimful volume

The nominal volume is the amount the bottle is designed for in normal filling. The brimful volume is the physical volume up to the neck and you will find it in the parameters. The difference between them forms a reserve for the cap or pump and for the expansion of the contents when the temperature changes. For this reason, fill only up to the nominal volume. The reserve matters most with oils, which expand in warmth, and with shampoos, which foam during filling.

Cap and closing

The cap is tightened by hand, without tools. The contents are dispensed by pouring, so the set suits products where the customer pours the required amount into the palm or onto a washcloth. If you need more precise dispensing, another closure with a 24/410 neck finish, for example a pump, also fits the same neck. You will find closures with this neck and ready-made combinations of packaging and closure in the Handymade range. If you make your own combination, we recommend checking the tightness and dispensing with your specific formulation.

Good to know

• Preparation before the first filling – wash the bottle and the cap, disinfect them with isopropyl alcohol (IPA) or ethanol and let them dry completely. Residual water in an aluminium bottle cannot be seen through the wall, so let it dry with the neck facing down.
• Temperature during filling – aluminium conducts heat, and a hot filling also warms the wall of the bottle. Fill products after they have cooled to room temperature, and finished emulsions and gels only after the viscosity has settled.
• Water-based, acidic and alkaline contents – metal may react to long-term contact with water and pH fluctuations differently from glass. For water-based and alcohol-based formulations, we therefore recommend a test in the finished product: fill the bottle, leave it for several weeks at normal temperature and observe the scent, the colour and the wall of the packaging.
• Cap and essential oils – polypropylene tolerates oils, but with concentrated essential oils or solvents, check the condition of the thread and the tightness regularly.
• Use – the set is declared for cosmetics. Neither the bottle nor the cap has a food contact certificate, so the set should not be used for homemade oils or syrups.
• Repeated filling – once empty, the bottle can be washed and filled again. A dented wall does not return to its original shape, so bear this in mind with gift packs.
• Recycling – aluminium and polypropylene are recycled separately, so unscrew the cap before disposal.

Frequently asked questions