In reversed-phase HPLC (RP-HPLC), the peptide mixture is separated based on hydrophobicity as it passes through a C18 or C8 column
Helps fade hyperpigmentation such as age spots, melasma, and freckles
Copper load: GHK-Cu delivers copper
A 30mg vial with 3ml of water provides a 10mg/ml concentration that delivers clean doses at the 5mg, 7.5mg, 10mg, and even 12.5mg levels
This approach mirrors strategies used with other peptide therapies to optimize tolerability
What You'll Need Required Supplies Retatrutide vial (lyophilized powder, typically 5mg, 10mg, or 15mg) Bacteriostatic water (BAC water): contains 0.9% benzyl alcohol as preservative Insulin syringes (U-100, 0.5mL or 1mL with fine gauge needle) Alcohol swabs (70% isopropyl alcohol) Optional but Recommended Larger mixing syringe (3mL) for adding BAC water Sharps container for safe needle disposal Clean workspace with good lighting Vial labels to mark reconstitution date and concentration Do NOT use: Sterile water or saline without preservative