Whenever you try a new product, be sure to do a patch test on your arm and wait about 10 minutes before applying it to your face
The human tripeptide GHK has a long history of safe use in wound healing and skin care
Most notably, it was shown that ROS are not only incidental side-products of metabolism but also generated by systems that have evolved to do so in a programmed manner (Doke 1985
This mechanism raises the critical discontinuation question - does stopping GHK-Cu immediately halt enhanced collagen production returning synthesis rates to pre-treatment baseline, or does the improved dermal environment created during treatment continue supporting elevated collagen production through positive feedback mechanisms where better matrix structure itself promotes ongoing synthesis even without continuous peptide stimulation
[DOI] [Google Scholar] 29.Kabin E., Dong Y., Roy S., Smirnova J., Smith J.W., Ralle M., Summers K., Yang H., Dev S., Wang Y., et al
BMC Ophthalmol 2023;23:368