Comparison tool
Compare peptides
Pick up to three compounds. Useful for deciding whether two peptides in a stack actually do different things, or whether you're paying twice for the same pathway.
Select up to three (1/3)
Comparison results
| Attribute | |
|---|---|
| Category | Skin & hair |
| Evidence grade | Moderate |
| Also known as | Copper peptide, Glycyl-L-histidyl-L-lysine copper |
| Mechanism | Delivers copper into cells and resets gene expression toward a younger profile, upregulating collagen, elastin and glycosaminoglycan synthesis while activating antioxidant defences and hair-follicle enlargement. |
| Key benefits | Increased collagen and elastin production · Improved skin firmness and reduced fine lines · Hair-follicle stimulation · Accelerated wound healing |
| Side effects | Skin irritation or redness · Copper accumulation with excessive systemic use · Injection-site swelling |
| Half-life | Not applicable topically; short systemically |
| Administration | Topical serum, microneedling adjunct or subcutaneous injection |
| Dosing overview | Topical 1–3% serum daily; injectable protocols vary widely |
| Storage | Cool, dark place; the solution is characteristically deep blue |
| Legal status | Widely available as a cosmetic ingredient; injectable use is unapproved. |
Dosing figures reflect published literature and commonly reported community protocols. They are informational only.
Head-to-head comparisons
Each comparison below is its own page with the full attribute table, key differences and shared attributes for that pairing. They are grouped by the category the compounds are indexed under.
GLP-1 receptor agonists
Direct comparisons between the incretin-based compounds most often searched against one another.
Metabolic and GLP-1 compounds
Compounds indexed under metabolic use, including the GLP-1 receptor agonists and the smaller fat-metabolism peptides often searched alongside them.
Recovery and tissue repair
Pairings between compounds indexed for healing, connective tissue and post-injury recovery.
Growth-hormone axis
Secretagogues and releasing peptides that act on growth-hormone signalling, compared with each other and with adjacent compounds.
Longevity and mitochondrial
Compounds indexed under longevity, cellular and mitochondrial function.
Sexual health
Melanocortin and related compounds indexed for sexual-health use.