Topical GHK-Cu serum shelf life Pre-made commercial serums: Usually 6-12 months unopened 3-6 months after opening Check manufacturer recommendations Refrigerate after opening extends life DIY serums (mixing powder with carrier): Shorter shelf life than commercial 2-4 weeks typical (no preservatives) Must refrigerate Discard if color changes Factors affecting topical shelf life: Preservatives: Extend significantly pH: Neutral pH more stable Carrier: Some better than others (hyaluronic acid, glycerin good) Storage: Cool, dark, sealed Contamination: Sterile technique critical Best practices for topical GHK-Cu: Buy small bottles (use within 3-6 months) Refrigerate after opening Don't double-dip (pour into hand, don't touch dropper to skin) Watch for color changes (brown = oxidized) Replace every 6 months even if looks fine See our how to reconstitute peptides , bacteriostatic water for peptides , and how long reconstituted peptides last in fridge

Vial integrity affects peptide quality significantly
This vitamin is essential for healthy red blood cells, energy, and nerve function
CJC-1295 (with or without DAC): Standard shelf life: 28-30 days refrigerated Maximum: 35-40 days, expect some potency loss Stable peptide, no special concerns Ipamorelin: Standard shelf life: 28-30 days refrigerated Maximum: 35 days Very stable GHRP GHRP-6 and GHRP-2: Standard shelf life: 28-30 days refrigerated Maximum: 30-35 days Similar stability to Ipamorelin IGF-1 LR3: Standard shelf life: 28 days refrigerated Maximum: 30 days (do not push longer) More sensitive to degradation than other peptides Loses potency faster after 28 days Hexarelin: Standard shelf life: 28-30 days refrigerated Maximum: 35 days Recommendation: Stick to 28-30 days for all growth hormone peptides
Half-life is a laboratory measurement that has limited relevance to the real-world therapeutic application of BPC-157