The microneedling creates micro-channels that deliver copper peptides directly to the dermal papilla the exact target cells identified in Pyo et al.'s 2007 work
The most relevant systematic review found 36 studies, but 35 were preclinical and only 1 was clinical, with no large human efficacy trials identified [4]
Pomfrett CJD, Dolling S, Anders NRK et al (2009) Delta sleep-inducing peptide alters bispectral index, the electroencephalogram and heart rate variability when used as an adjunct to isoflurane anaesthesia
Tanzilli G, Arrivi A, Placanica A, Viceconte N, Cammisotto V, Nocella C, Barill F, Torromeo C, Pucci G, Acconcia MC, Granatelli A
S.MannervikB.HaslerJ
The adverse effects of intravenous glutathione speculatively arise from the direct delivery of huge amounts of the molecule in the blood circulation