are there any negative side effects of bpc 157 BPC-157: Tendon Repair and More Is BPC‑157 a Risk? Safety,
Description
BPC 157 upregulates VEGFR2 expression in rats with hind limb ischemia and endothelial cell culture

S works by enzymatically disrupting the fibrous septae responsible for creating cellulite resulting in a smoother appearance of the treated skin

So statements that topical AHK-Cu is "well tolerated" rest on the copper-peptide class generally much of it built on GHK-Cu (Pickart & Margolina 2018, PMID 29986520) and on community use, rather than on dedicated AHK-Cu safety study

In more severe cases, softening ointments may help

Before assuming an exotic cause for hair thinning or skin changes, make sure the basics are in order
