ghk-cu modulates over 4000 genes Peptide: Clinical Evidence & Injectable Protocols GHK-Cu Complete Guide: Skin &

A study with 124 patients compared 5% tea tree oil gel to 5% benzoyl peroxide and both reduced acne (though tea tree oil worked more slowly)

Lower-quality formulations may contain excess free copper ions that deposit on or in the skin

Acta Pol Pharm

The Glow stack or GHK-Cu peptide (glycyl-L-histidyl-L-lysine copper) is one of the most extensively researched regenerative peptides, with over four decades of scientific investigation supporting its role in skin repair, collagen stimulation, and anti-inflammatory activity

These come in various sizes, but 0.5ml or 1ml syringes with 29 to 31 gauge needles work well for subcutaneous administration