GHK Cu Peptide for Skin & Hair Facial Serum & Scalp Solution GHK Cu Peptide The benefits, side effects, and more [2026] If your GHK injection site gets irritated try this , 1. Dilute it by adding more water to the syringe , 2. Let it sit until it reaches room temperature , Also, make sure youre rotating injection Subcutaneous Injection Sites and Instructions for Safe Self Administration Peptide Injection Site Reactions: What's Normal, What's Not, and What Revolution Health & Wellness GHK Cu Peptide: What It Does for Body Composition and Metabolic Health