Transparent Plastic Cosmetic Jar Base, 3 ml

Clear plastic jar 3 ml with lid is a complete set for packaging cosmetic samples and miniatures. Both parts are transparent, so the colour and consistency of the contents are visible without opening. This is useful for testers where the customer chooses based on shade or texture. The set is declared as suitable for contact with cosmetic products. It is not approved for contact with food and is intended exclusively for cosmetic and technical use.

What the set is suitable for

A volume of 3 ml corresponds to one to several applications, so this is primarily a sample container: testers for creams, face masks and balms, miniatures for customers with their order, trial doses of a new formula, or side-by-side comparison of several fragrance or colour variants. It also works well for solid and semi-solid products that are scooped with a finger or spatula: lip balm, solid perfume, ointment, colour pigment, glitter, or a small amount of pigmented paste. For liquid products such as serums or oils, the jar is less suitable. They are difficult to dispense from it and easily spill if accidentally opened.

How the set works

The jar is made of polystyrene (PS), a hard and clear plastic that holds its shape and displays the contents well. The lid is made of polypropylene (PP), a more flexible material that screws onto the jar's thread and seats tightly when closed. Thanks to this combination, the lid does not stick or crack when screwed on, and the jar does not deform when scooping out the contents. For creams with a higher water content, we recommend verifying the seal with your own test: fill, close, turn upside down and leave for several hours. Behaviour varies depending on the viscosity of the formulation.

Nominal and total volume

For each container we state two values. Nominal volume is the quantity the jar is designed for under normal filling. Total volume to the brim is the physical volume up to the top edge. The difference between them is a reserve for the lid and for possible expansion of the contents with temperature change, for example with balms that soften in the heat. Fill to the nominal volume, not to the brim. Otherwise the contents will be pushed onto the thread when closing and the lid will not seal. The specific values of both volumes can be found in the product parameters.

What is good to know when filling

Before first use, we recommend washing and briefly disinfecting both jars and lids by wiping with ethanol or isopropyl alcohol and allowing them to dry completely. Prolonged soaking in alcohol is not necessary and is not beneficial to polystyrene.

Polystyrene is not intended for high temperatures. Allow melted balms and ointments to cool slightly before filling, until the mass is still flowing but no longer hot straight from the water bath. The jar is not suitable for a dishwasher or for sterilisation with boiling water.

For repeated use, wash the jar thoroughly and check that the thread and lid are not damaged. Lids with the same neck type and other ready-made combinations can be found in the Handymade range. For your own combination, we recommend verifying the seal with the specific formulation. When recycling, separate the parts, as the jar and lid are made of different plastics; the material designation of both parts is listed in the parameters.

Frequently asked questions