
HtnGymcel
6'2 / 90kg lean
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I recently posted a thread about the usage of a few peptides which included GHK-CU. I got a few answers which made me do some research, and if you are using GHK-Cu or planning to, this may be relevant.
Most peptides are mixed with BAC water (bacteriostatic water) because it contains a small amount of benzyl alcohol, which prevents bacteria growth and keeps the peptide sterile and stable for longer (usually up to 28 days).
In the case of GHK-CU, BAC water is not the best solution. Read this thread regarding what to use, as it is the best on here and the user made a way better thread than i ever could.
looksmax.org
however, if you're planning on using BAC-water anyways, here is the best way to do it.
GHK-Cu in BAC water loses stability quickly because benzyl alcohol and the copper ion both catalyze oxidation and peptide bond hydrolysis.
At 2–8 °C, expect 3–5 days of near-full activity, with noticeable degradation by day 7.
So basically after 7 days in the fridge, your GHK is ruined.
What you should do is:
Draw your 3–4 days’ worth of syringes, store those in the fridge (2–8 °C).
Keep the main vial refrigerated, not frozen, until it’s empty.
If you need to store solution longer than a week, make separate small vials or aliquots, freeze those once, and thaw each only once when needed.
Best solution is to read the thread linked to get the best result possible, however if you're in a situation where you already mixed it with bac, this may help.
Most peptides are mixed with BAC water (bacteriostatic water) because it contains a small amount of benzyl alcohol, which prevents bacteria growth and keeps the peptide sterile and stable for longer (usually up to 28 days).
In the case of GHK-CU, BAC water is not the best solution. Read this thread regarding what to use, as it is the best on here and the user made a way better thread than i ever could.

How to properly use GHK-Cu
GHK-Cu, on paper, seems to be the single best looksmaxxing compound there is (perfect skin, anti-aging, surgery recovery, neurogenesis⁹,¹¹ etc)¹, yet no one seems to be reaping any of its benefits. What’s even more bizarre is that injection-related pain is massively reported, more consistently...
however, if you're planning on using BAC-water anyways, here is the best way to do it.
GHK-Cu in BAC water loses stability quickly because benzyl alcohol and the copper ion both catalyze oxidation and peptide bond hydrolysis.
At 2–8 °C, expect 3–5 days of near-full activity, with noticeable degradation by day 7.
So basically after 7 days in the fridge, your GHK is ruined.
What you should do is:
Draw your 3–4 days’ worth of syringes, store those in the fridge (2–8 °C).
Keep the main vial refrigerated, not frozen, until it’s empty.
If you need to store solution longer than a week, make separate small vials or aliquots, freeze those once, and thaw each only once when needed.
Best solution is to read the thread linked to get the best result possible, however if you're in a situation where you already mixed it with bac, this may help.
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