Shelf Life and Storage of Ingredients (After Opening and in Syringes)
Asked by: dharmaamm
On: July 26, 2016
Product Type:
Cosmetics
Question
Based on the information provided, I have questions regarding the shelf life and storage of ingredients:
- Regarding ingredients that have passed the recommended expiry date after opening (e.g., 60, 90 days as specified): Can they still be used? Or are they unusable/no longer effective according to their intended properties?
- For liquid ingredients packaged in syringes, is the expiry date counted from the date the company dispenses them? Do these liquid ingredients need to be stored the same way as powdered ingredients?
Answer
Based on the previous conversation, here is the information regarding the shelf life and storage of ingredients:
- Ingredients past the recommended shelf life after opening: These ingredients are generally safe to use, but their effectiveness will decrease more quickly than if stored properly. The exact rate of efficacy loss depends on the specific ingredient and storage conditions.
- Ingredients packaged in syringes: The expiry date for ingredients in syringes is counted from the date they were packaged. Syringes are convenient for small amounts but are not ideal for long-term storage as they don't protect well from air and light and can degrade. It's recommended to use them quickly or transfer them to an airtight, light-blocking container for longer storage.