ghk-cu peptide safety profile human studies GHK-Cu Topical Serum: Benefits, Mechanism
Description
Further support for these findings came from an ex vivo skin model, which also showed a notable increase in collagen 4 synthesis at the dermal-epidermal junction when exposed to the optimized GHK-Cu and LMW HA mixture

In a study by Tomosugi et al

While a person who really wants to acquire peptides right now can do so fairly easily, they are not, strictly speaking, legal which might be why a peptide club with a 300-person waitlist has popped up in San Francisco

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doi: 10.1089/ten.TEA.2011.0491

Seems like the shots have more side effects than they are have said
