Glass Dropper, Gold Black, 53 mm

Black-gold dropper, 53 mm

The dropper seals the bottle and dispenses its contents drop by drop. It is particularly suitable for facial serums, oil blends, tinctures and active ingredient concentrates, where only a small amount is used and it matters that the contents are not wasted. The black-gold finish looks neutral and complements brown, black and clear glass.

In contact with the contents is a glass tube and silicone bulb; the threaded part is made of polypropylene with an aluminium collar. Glass and silicone are an advantage with oils, essential oils and alcohol-based extracts, which would discolour or swell certain plastics over time.

Why choose a dropper

• Precise dosing – the contents are drawn up by squeezing the bulb and released drop by drop, so the customer uses exactly as much serum or oil as needed.
• Cap and dispenser in one – the dropper also seals the bottle, so there is no need to combine a separate cap and dispenser.
• Materials suitable for demanding contents – the glass tube and silicone bulb withstand vegetable oils, essential oils at typical cosmetic concentrations and alcohol tinctures.
• Attractive finish without labelling – the black-gold finish complements the bottle design and suits both natural and minimalist cosmetics.

What to watch out for when choosing

The dropper must fit the bottle in two respects. The first is the neck type: it fits bottles with an 18/410 thread, the standard size for glass serum and oil bottles. The second is the length of the glass tube. The tube should reach just above the bottom of the bottle so the remaining contents can be drawn up, but must not rest on the bottom. In a shorter bottle it would jam and the dropper could not be tightened; in a taller bottle it would not reach the remaining contents.

Bottles with the same neck type and ready-made bottle and dropper combinations are available in the Handymade range. When creating your own combination, we recommend verifying the seal and the behaviour of the dropper with the specific formulation, particularly with a higher proportion of essential oils or solvents.

Filling and dispensing

The bottle is filled to the nominal volume, not to the brim. The nominal volume is the amount the bottle is designed to hold under normal filling conditions; the total capacity up to the neck is greater. The difference provides a buffer for the glass tube, which pushes some of the contents upward when screwed in, and for expansion of the contents when the temperature changes. If the bottle is filled to the brim, the contents will overflow the neck when the dropper is fitted.

The dropper works best with contents of low to medium viscosity, that is oils, aqueous and alcohol-based solutions and light serums. With thicker serums of gel consistency, uptake is slower and drops are larger. It is not suitable for thick creams or balms.

Good to know

• Preparation before first use – we recommend washing the dropper before filling, disinfecting it with isopropyl alcohol or ethanol and leaving it to dry completely. Residual water in the tube would enter the anhydrous product.
• Air uptake – a small amount of air enters the bottle with each use. With sensitive oils and serums containing antioxidants, this is a reason to choose smaller bottles that are used up sooner.
• Silicone bulb and essential oils – at high concentrations of essential oils or with pure solvents, it is advisable to verify the long-term behaviour of the bulb with the specific formulation.
• Reuse – the dropper can be washed and used again provided the bulb has not hardened and the tube is not chipped. A new dropper is used when selling finished products.
• Recycling – the dropper consists of several materials; it is advisable to separate the glass tube from the bulb and threaded part before disposal.

The packaging is suitable for use with cosmetic products; a declaration of conformity is available with the product.

Frequently asked questions