Glass Dropper, Matte Black With Shiny Strip, 57 mm

Black matte dropper with shiny stripe is a closure with a glass tube and silicone bulb, designed for precise drop-by-drop dispensing. It fits bottles with an 18/415 neck and is particularly suitable for facial serums, facial and beard oils, oil concentrates, tinctures and essential oil blends, where small amounts need to be measured without pouring out the contents.

The polypropylene cap in a matte black finish with a shiny stripe gives the bottle a uniform dark look that pairs well with brown or black glass. The glass tube does not react with oils or alcohol-based contents, making the dropper suitable even for formulations with a higher proportion of essential oils or ethanol. The packaging is suitable for use with cosmetic products.

Why use a dropper

• Precise dispensing – contents are drawn out drop by drop, which is practical with concentrated serums and oils where only a few drops are needed per application.
• Hygienic dispensing – no fingers touch the bottle neck, the contents remain clean and the risk of introducing contaminants is reduced.
• Glass tube – resistant to oils, essential oils and alcoholic extracts; will not cloud or soften.
• Silicone bulb – flexible and draws up contents well even with thicker oils.
• Uniform appearance – the matte black finish with a shiny stripe creates a cohesive look with dark glass, both on the shelf and in photographs.

Use and filling the bottle

The dropper screws onto a bottle with the same neck type. When choosing, the tube length is the key factor: it should reach close to the bottom so that the remaining contents can be drawn up, but must not rest against it, otherwise the cap cannot be tightened and the seal will not hold. The bottle height therefore needs to be compared with the dropper length listed in the specifications.

A bottle with a dropper is filled to the nominal volume, not to the brim. The nominal volume is the volume for which the packaging is designed under standard filling conditions; the total capacity to the brim is the physical volume up to the neck. The difference between them is the headspace, which the tube takes up when inserted and which allows room for the contents to expand with temperature changes. If the bottle is filled to the brim, the contents will overflow through the neck once the tube is inserted.

Good to know

• Preparation before first use – before filling, it is recommended to rinse the dropper, disinfect it with isopropyl alcohol or ethanol and allow it to dry completely. The bulb should not be soaked during disinfection; wiping the outside is sufficient.
• Content viscosity – the dropper works best with liquid to slightly viscous contents. With thick oil macerates or gel serums, the tube fills slowly and drops form irregularly; a pump would be more suitable in such cases.
• Water-based contents – the dropper can also be used with water-based tonics and serums, but air from the bulb comes into contact with the contents during each draw. Adequate preservation is therefore important for water-based formulations.
• Silicone and solvents – the glass tube tolerates essential oils and alcohol without restriction. With high-solvent contents, it is recommended to monitor whether the silicone bulb softens or swells over time.
• Reuse – the dropper can be reused after thorough washing and disinfection; the glass tube should be checked for cracks before the next filling.
• Recycling – this is a composite packaging made of polypropylene and glass. Before recycling, the glass tube is separated from the cap with bulb and the parts are sorted by material.

Frequently asked questions