is glutathione a peptide CT Pharma Research Glutathione Peptide Glow Toner –
Description
One such piece of research is a 2020 review published in the journal Nutrients (1)

Unlike full-length growth hormone, it doesnt affect blood glucose or insulin sensitivity, making it suitable for research in diabetic or pre-diabetic populations

Furthermore, 58 M Cu(OAc) 2 also upregulated the IL-1 expression significantly

GHK-Cu holds particular promise for researchers investigating specific aspects of acne management and skin health

For more info on how Copper Peptides work with the hair growth cycle click HERE
Currently, 54 published research studies appear listed in citation form