This is an observed phenomenon where the peptides ability to accelerate cell turnover brings underlying congestion (such as microcomedones or trapped sebum) to the surface more quickly
Based on the February 2026 HHS announcement and analysis from compounding pharmacy and regulatory experts, the peptides expected to return to Category 1 status include BPC-157, Thymosin Alpha-1, TB-500, CJC-1295, Ipamorelin, AOD-9604, GHK-Cu, Selank, Semax, KPV, MOTS-C, and several others approximately 14 of the original 19 restricted compounds
The US Food and Drug Administration approved the peptide for the treatment of types 1 and 2 diabetes in 2005
Separate ex vivo and in vitro studies suggest that combining GHK-Cu with hyaluronic acid, especially lower-molecular-weight fractions at specific ratios, may further support collagen IV presence at the dermalepidermal junction
Fluoxetine reduces the mRNA expression of c-Fos through the PI3K/AKT signaling pathway after acute application at concentrations below 1 M, while the treatments with the higher doses (above 5 M), it increases the gene expression of c-Fos via the MAPK/ERK signaling pathway in astrocytes
