Yes, the glass bottle with dropper is suitable for most common oil-based and water-based cosmetic formulations, such as serums, oils, tonics or concentrated active solutions. Before final filling, we recommend performing your own stability and compatibility test – especially for products with a higher proportion of alcohol, acids or intense aromatic substances, to verify the behaviour of the dropper as well as the closure itself.

The bottle can be reused if hygienic principles are followed. Before each new filling, the packaging must be thoroughly washed, cleaned and then disinfected with a suitable agent, for example isopropyl alcohol or ethanol intended for this purpose. For disinfection you can use the products IPA 99% isopropyl alcohol or Ethanol 96% denatured plant-based. Only after complete drying and airing is the packaging ready for the next filling, which minimises the risk of microbial contamination and of affecting the fragrance or colour of the new product.

If you decide not to reuse the packaging, we recommend recycling it responsibly according to the recommendations given in the parameters of the specific product. After rinsing, the glass bottle should be sorted into the container designated for glass, while the dropper part is usually composed of several materials (plastic, rubber, glass) and should be separated according to local waste sorting rules, where possible. Always follow the recycling symbols and the information in the parameter table on the product page on Handymade.sk so that you dispose of the packaging in the most environmentally friendly way possible.

When filling, pay attention to a clean working environment, an appropriate product temperature and suitable viscosity, so that the dropper can smoothly draw up and dispense the contents. Do not overfill the bottle to the top – leave a small air gap that will make handling the dropper easier. For storage we recommend protecting the product from direct sunlight and extreme temperatures in order to maintain the stability of the components and the functionality of the dropper. In the case of thicker oil blends, it is advisable to briefly shake the bottle before use.

To select suitable packaging, we recommend using the advanced filter, which you will find at the top of the page after clicking on the relevant packaging material category. In the advanced filter you can conveniently combine several criteria at once – for example the type and size of the neck, the required packaging size, colour and material. This allows you to quickly filter only those bottles, dropper bottles or jars that correspond to your product parameters and then choose the specific design and dosing method that best fits your concept.

Before starting to fill the entire batch, we recommend filling a smaller trial amount of the product into one bottle and observing the behaviour of the packaging over time. Focus on the sealing of the dropper, the smoothness of dosing, any changes in colour or odour of the packaging and any leakage when turned upside down. Store the bottle for several days to weeks in the conditions in which it will actually be used (temperature, light), and according to the result adjust the final formulation or choose a different type of dosing. Such a pre-test will help you avoid complaints and ensure the stability and user comfort of the final product.