Understand the source comparison
How to Use Glow Stack for Skin Radiance Protocol: Peptide Comparison
Before starting a protocol, understand which peptides deliver which outcomes. And which combinations produce additive versus redundant effects. GHK-Cu (Copper Peptide) Stimulates collagen I/III synthesis via TGF-beta pathway; chelates copper ions for SOD activ
No winner is assigned.
This page preserves a source comparison for education. It does not add a rating, recommendation or clinical judgment.
- Before starting a protocol, understand which peptides deliver which outcomes. And which combinations produce additive versus redundant effects.
- GHK-Cu (Copper Peptide)
- Stimulates collagen I/III synthesis via TGF-beta pathway; chelates copper ions for SOD activation
- 340 Da
- Topical or subcutaneous
- Daily (AM or PM)
- Gold standard for collagen stimulation. Pairs well with barrier-repair peptides but degrades rapidly in acidic environments
- Matrixyl (Palmitoyl Pentapeptide-4)
- Activates TGF-beta receptors to upregulate procollagen production
- 578 Da
- Topical with microneedling or subcutaneous
- Every 48 hours
- Effective but requires penetration enhancement for dermal reach. Molecular weight limits passive absorption
- Epithalon
- Regulates telomerase activity; supports cellular senescence pathways
- 390 Da
- Subcutaneous only
- Cyclical (10 days on, 10 days off)
- Systemic peptide with dermatological secondary effects. Not a first-line radiance compound but valuable in anti-aging stacks
- Argireline (Acetyl Hexapeptide-8)
- Inhibits SNARE complex formation to reduce expression lines
- 889 Da
- Topical only (larger MW)
- Daily (AM)
- Temporary effect on dynamic wrinkles. Does not stimulate collagen or address textural irregularities