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Microneedling, Mesotherapy or Injection Application: These methods allow the GHK-Cu to be released in a controlled and slow manner, allowing its effect to continue for a longer period of time

doi: 10.1210/jc.2008-1385 17 CaputoMPigniSAgostiEDaffaraTFerreroAFilighedduNet al

confirmed no cytotoxicity to HaCaT keratinocytes or human dermal fibroblasts across a six-log concentration range (0.0058 to 5800 micromolar) 3

Activating SIRT1 can inhibit ferroptosis and reduce pathological damage in diabetic complications

Second, the EEG endpoint that defined the compounds activity is a population-level pattern in the recipient cortex, not a molecular readout meaning the discovery established a phenomenology, not a pathway