The skin starts to look like it's doing what it used to do on its own
Technical Challenges Follicular Barrier: The hair follicle is filled with sebum, creating a hydrophobic barrier that repels water-soluble peptides like AHK-Cu

Research suggests BPC-157 promotes healing by: Increasing fibroblast activity , which enhances collagen production and tissue regeneration Accelerating revascularization , improving nutrient delivery and oxygenation at the injury site Regulating nitric oxide pathways , helping reduce inflammation and oxidative damage Stabilizing growth factor signaling , including VEGF and FGF, which are key players in tissue remodeling Animal studies have shown BPC-157s regenerative effects on: Partially torn Achilles tendons Injured medial collateral ligaments (MCL) Damaged quadriceps muscles and tendon junctions Tendon-to-bone reconnection after surgical injury BPC-157 accelerates the healing of transected rat Achilles tendon and induces expression of eNOS and VEGF Gavrilovi, Journal of Orthopaedic Research This multi-level healing response gives BPC-157 an edge in treating tough connective tissue injuries that often dont respond to traditional methods

This has prompted concern among researchers that while BPC-157 might help tissues regenerate, it could also, at least theoretically, enhance the spread or survival of dormant cancer cells
If you want a plain-language rundown of symptoms and patterns, the Crohns overview is a good place to start