ultra glutathione NAC for Hair, Skin and Detox Support Reviewers have found that the packets help to preserve the freshness of the product for longer periods. Aurora Nutrascience Micro-Liposomal Glutathione Multi-Pack+

Room temperature storage: Stable 12-24 months in sealed container Keep below 25C (77F) Low humidity environment essential Protect from light Refrigerated storage: Extends shelf life to 24-36 months Prevents any moisture absorption Reduces oxidation risk Recommended for long-term storage Freezer storage: Maximum shelf life: 36-48 months Best for bulk quantities you won't use soon Must be in moisture-proof container Allow to reach room temp before opening (prevents condensation) Critical factors for raw powder: Moisture is the enemy (causes clumping and degradation) Light exposure accelerates degradation Air exposure leads to oxidation Temperature stability matters Opened powder container Once you open your copper peptide powder, moisture and air exposure become risks

120 LiuY.JiJ.ZhangW.SuoY.ZhaoJ.LinX.et al (2019)

If you are reading about copper peptide side effects, the concern applies almost exclusively to injectable use

The primary practical challenge with any topical peptide treatment is getting the compound from the surface to where it needs to go

10.1097/ICO.0000000000002072 65 HoferS