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Researchers track markers like extracellular matrix density and vessel formation rather than fixed timelines

Journal of Cosmetics, Dermatological Sciences and Applications, 5(2), 145152

(PubMed) Pangilinan F, Mitchell A, VanderMeer J, et al

Ideal Stack Candidate Profile A practical framework for deciding on the stack: Injury age: two to ten weeks old (past the acute cytokine peak but still actively remodeling) Tissue type: tendon, ligament, joint capsule, or post-surgical scar tissue Patient goal: faster return to high-demand activity rather than cosmetic improvement alone Absence of active malignancy, uncontrolled autoimmune disease, or pregnancy Patients who are in the acute phase (zero to seven days post-injury) may start TB-500 first, then layer in GHK-Cu at week two or three when the repair transitions toward remodeling

Reconstituted GHK-Cu solution typically carries a faint blue tint from the copper ion itself, which is expected and not a sign of a problem