Since the beginning of glass production (during the time of the Egyptian pharaohs), violet glass or golden containers were used to preserve precious oils, salves, and alternative medicines. These containers worked because the sun emits both visible and invisible light. We can see the visible spectrum (as a rainbow of colours), when white light is channeled through a glass prism, but there is also light that is invisible to our eyes – the infra red and UV-A part of the spectrum.
Sunlight is vital for plants to grow, but if they are over exposed to the sun after reaching maturity, the light accelerates the process of decay. This means that products that are packaged in traditional coloured glass packaging (clear, amber, blue and green) allow visible light to pass through so do not offer the same protection as violet glass. Miron violet glass is made in Switzerland and works like a natural filter, since it blocks most of the visible light with the exception of the violet part of the spectrum but remains permeable to UV-A and infra red light. This unique combination protects against the aging processes of visible light, and lengthens shelf life and potency of products contained within violet glass.
Over the last few years, several scientific tests have been carried out on spirulina, rose water, drinking water, oils, cereals, honey, fruits and other substances to prove the protective quality of violet glass. (The picture right shows an example of what happened to a cherry tomato left in clear glass compared to the protection offered by the violet glass).
Chemical analysis by gas chromatography of rosewater, (stored for two months in either violet or amber glass) showed that within 2 months the amount of several important aromatic compounds had decreased significantly following storage in amber glass. No change was observed in the sample stored in violet glass showing the protection against decomposition by visible light.
This is why this very special glass was chosen for the Natroma range, where it protects our Hydrolat Toners and Oil Serums. We have to import these bottles to the UK, but we felt it was important to offer superior packaging that naturally increases shelf life, and protects the natural potency of our organic natural ingredients. The bottles are also very attractive too!
Refill service now available on the Natroma website!
We've always offered a studio refill service for products packaged in Miron glass (just bring your empty bottle back into the studio and we'll re-fill it with the same product again). So we’re very pleased to announce that we’re now offering refills on our Natroma website too! So when you purchase full sizes of Natroma products packaged in Miron bottles, don’t throw the valuable violet glass away when the bottles are empty. Instead, order a refill from our website (packaged in recyclable plastic) so you can top up your bottle and re-use it again. In this way, you’ll be helping the environment since the plastic bottle will be lighter for mail order and there will be no need to recycle the violet glass. To encourage you to recycle we’re pleased to offer refills at a cheaper price, that reflects their ‘no frills’ packaging.