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The levels of GHK-Cu in the blood are high in youth, with levels decreasing dramatically with age, and it is thought to be a factor that controls collagen synthesis and breakdown, with studies showing its potential to improve skin appearance and wound repair 4m30s
Less common effects are reviewed at intake and during follow-up
Psychiatric Res
It is primarily indicated in some countries for supportive treatment in liver disorders and as an antioxidant, but it is widely used off-label for skin brightening and whitening
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