How long can an open Dr. Temt ampoule be stored for?

Each vial should be used up on one single use. Glass ampoules are airtight containers, filled with the highest quality of key ingredients, producing a very concentrated form of treatment. Higher concentration of products with little or no use of preservatives is possible due to the airtight packaging. Free of oxygen, it eliminates oxygenation, contamination, and pollutant.