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[Abstract]2021 Jun 18;4(8):e202000906

Fluorescence imaging confirmed delivery of the payload to the viable epidermis and upper dermis

doi: 10.1155/2019/7286737 152 TohJWTWilsonRB

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Lactate Dehydrogenase (LDH) Assay In this assay performed on HaCaT keratinocytes cells, the cells were treated with GHK, GHK-Cu, CuCl 2 and Cu(OAc) 2 for 30 mins at 7 different concentrations each, ranging from 0.0058 to 5800 M0.0058 M, 0.058 M, 0.58 M, 5.8 M, 58 M, 580 M, 5800 M

The abdomen is often easiest to rotate and inspect, but injectable GHK-Cu is not FDA-approved and should not be self-administered without licensed medical guidance