Amber Glass Square Bottle with Roll-On, 30 ml

Amber glass bottle, square, roll-on, 30 ml

Ready-made kit for roll-on preparations: a square amber glass medicine bottle, a metal roller ball in a plastic insert and a black cap with an 18/410 neck finish. Amber glass filters light, so the kit suits contents that are sensitive to light, for example blends of essential oils in a carrier oil, oil-based perfumes, alcohol-based perfume compositions or liquid serums for small areas of skin. The square shape keeps the bottle in place, so it does not roll across the table or inside a bag.

The roller ball applies the preparation directly to the skin without contact with your fingers, and the dose is small and even. For makers, the kit is suitable for samples, smaller batches and their own roll-on products for the temples, wrists, joints or behind the ears.

What the kit consists of

• Glass medicine bottle – amber glass with an 18 mm neck, nominal volume 30 ml. “Medicine bottle” is the name of a bottle shape with a narrower neck and straight walls; it has nothing to do with medicinal use.
• Metal roller ball – a steel ball seated in a plastic (PP) insert that is pressed into the neck of the bottle. Metal feels cooler to the touch than plastic, which suits roll-on products for the temples or the eye area.
• Black cap – a plastic (PP) closure with an 18/410 thread that covers the roller ball and prevents the contents from leaking during transport.

All three components are declared as suitable for contact with cosmetic products, and you will find the declarations of conformity with the product. The kit has no food-contact certificate, so it is intended for cosmetics.

Nominal and total volume

The nominal volume is the amount the bottle is designed to hold under normal filling. The total volume to the brim, given in the parameters, is the physical volume up to the neck. The difference between them leaves room for the roller ball insert, which extends into the neck, and for the expansion of the contents when the temperature changes. Fill the bottle up to the nominal volume.

What it is suitable for

Roll-on application works best with liquid and thin contents that the ball picks up smoothly as it turns and transfers to the skin. These include:

• oil-based perfumes and blends of essential oils in jojoba, sweet almond or fractionated coconut oil,
• alcohol-based perfume compositions and eau de parfum,
• liquid serums for the eye area, for the lips or for local use,
• aromatherapy blends for the temples, wrists or back of the hand.

Thick gels, creams and emulsions with a higher viscosity dispense poorly or not at all through the roller ball. For such formulations, it is better to choose a bottle with a dropper or a jar.

Good to know

Before the first filling, wash the bottle, the insert with the roller ball and the cap, disinfect them with isopropyl alcohol or ethanol and let them dry completely. When filling, measure the contents into the bottle, press the insert with the roller ball straight into the neck until it clicks, and finally screw on the cap.

For your own formulations, we recommend checking the tightness, smooth dispensing and behaviour of the materials with your specific contents, especially at higher concentrations of essential oils and in alcohol-based blends that come into contact with the plastic insert and cap. A short test with the bottle lying on its side will show whether the closure holds and the roller ball does not leak.

The glass bottle withstands repeated use, and after the bottle is empty, the insert with the roller ball can be prised out, washed and fitted again. If it sits looser in the neck after removal, it is better to replace it. Other closures with the same neck type from the Handymade range can also be used on the 18 mm neck; ready-made combinations have their own description.

When sorting waste, separate the glass from the plastic cap and from the insert with the roller ball, which combines plastic with steel.

Frequently asked questions