This may be due to copper's ability to enhance the expression of metalloproteinases (MMPs).16 MMPs normally regulate the degradation of collagen, and a specific one, MMP-1, may be responsible for the initiation of collagen fragmentation.17 Supporting this, a 2024 study noted that elevated MMP-1 levels appear to contribute to aging skin and that higher MMP-1 levels in mice led to:18 The loss and fragmentation of dermal collagen fibrils Contracted fibroblast morphology Reduced collagen production Increased expression of pro-inflammatory mediators Additionally, a 2016 study found that GHK-Cu significantly increased gene expression of MMP-1 and MMP-2 at the lowest concentration, which the studys authors considered to be one of the reasons the peptide was able to increase collagen and elastin production.19 So, what this could ultimately mean is that using too much GHK-Cu (or other copper peptides) may in theory increase the skins MMP-1 concentration above the levels involved in healthy collagen production, taking it into the collagen fragmentation and breakdown territory seen in older skin with naturally higher MMP-1 levels

I have been off it for a week now there has been a slight return but only honestly was minimal
Not for human consumption, clinical use, veterinary applications, or any diagnostic or therapeutic purposes
This product is not inte KLOW Blend 80mg GHK-Cu, TB-500, BPC-157, KPV KLOW Blend KLOW 80mg Peptide Blend (Lyophilized Powder) For Research Use Only GHK-Cu TB-500 BPC-157 KPV KLOW is an advanced 4-in-1 research peptide blend combining 80mg of compounds studied for their potential in tissue repair signaling, immune modulation, and cellular recovery mechanisms in controlled laboratory environments
Refrigeration is Mandatory: The reconstituted solution must be stored in a refrigerator, typically between 2C and 8C (36F and 46F)
I wanted this to be the most permanent