2) Headache or transient fatigue Some patients report mild, short-lived symptoms during the first week as the body adjusts
One of the best things about GHK-Cu is that it's typically very well-tolerated, even by skin that's prone to being reactive or sensitive
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This essentially breaks the delicate bond between the GHK peptide and the copper ion, which means you won't get those cosmetic benefits you're looking for
For most facial serums, moisturizers, and hair tonics, a concentration of 1% to 3% is the sweet spot
A research-only breakdown of the BPC-157, TB-500 and GHK-Cu blend, what each component is studied for, and GLOW vs KLOW