Because it works through cellular signaling rather than pharmacological action, the early-stage signals (reduced inflammation, calmer scalp) appear within the first few weeks but visible density change typically requires three to six months of consistent daily use
Hajihashemi P, Askari G, Khorvash F, Reza Maracy M, Nourian M
Nature 380:435439 Henry TD, Annex BH, McKendall GR, Azrin MA, Lopez JJ, Giordano FJ, Shah PK, Willerson JT, Benza RL, Berman DS et al (2003) The VIVA trial: vascular endothelial growth factor in ischemia for vascular angiogenesis
GHK-Cu Copper Peptide (Glycyl-L-Histidyl-L-Lysine:Copper(II)) Research Hub Aggregated Studies MedTech Research Group aggregates published research from peer-reviewed journals, clinical trials, and academic institutions