how long does it take to see ghk cu results 12 weeks in, and my skin has NEVER looked better! peptides are doing their thing. Alright, I need give you an update—it's been 12 weeks since I started using GHK GHK-Cu - Peptide for Collagen,
Description
Immunology 142 (1), 2431

Can GHK-Cu cause irritation or side effects, including 'copper peptide uglies'

Endogenous GHK levels in human plasma decline measurably with age a finding that has shaped a substantial portion of the research interest in the compound (Pickart, Vasquez-Soltero & Margolina, 2015)

[1] [3] Each pre-filled pen delivers semaglutide in concentrations designed for once-weekly subcutaneous administration, with available dosing strengths of 0.25 mg, 0.5 mg, 1 mg, and 2 mg per injection
Aging (Albany NY), 14(7), 3191-3202
Jeong WY, Kwon M, Choi HE, Kim KS