Ingredient or product comparison
Difference Between GHK-Cu and KLOW: Comparison
The table below summarizes the structural, mechanistic, and application differences between GHK-Cu and KLOW. Use it to determine which compound aligns with your experimental objectives. Amino Acid Sequence Gly-His-Lys (tripeptide) Lys-Leu-Orn-Trp (tetrapeptide
This source-based comparison does not add ratings or recommend a winner.
- The table below summarizes the structural, mechanistic, and application differences between GHK-Cu and KLOW. Use it to determine which compound aligns with your experimental objectives.
- Amino Acid Sequence
- Gly-His-Lys (tripeptide)
- Lys-Leu-Orn-Trp (tetrapeptide)
- Entirely different sequences. No structural overlap
- Molecular Weight
- 404 Da (with copper)
- ~545 Da (with copper)
- KLOW is larger, may affect tissue penetration
- Primary Mechanism
- Collagen synthesis, MMP suppression, TGF-β activation
- AMPK activation, mitochondrial biogenesis support
- GHK-Cu = tissue repair; KLOW = metabolic regulation
- Copper Binding Affinity
- Kd ~10⁻¹⁶ M (extremely tight)
- Not well characterized
- GHK-Cu has superior binding documentation
- Peer-Reviewed Studies
- 600+ publications since 1973
- Fewer than 50, mostly recent
- GHK-Cu has far more robust evidence base
- Clinical Trial Data
- Multiple double-blind RCTs
- Limited pilot studies, no phase III trials
- GHK-Cu is clinically validated; KLOW is investigational
- Primary Research Use
- Wound healing, skin anti-aging, hair growth
- Metabolic health, mitochondrial function, longevity
- Select based on whether outcome is tissue or metabolic
- Typical Dosage Range
- 1–3 mg subcutaneous or topical (research contexts)
- 5–10 mg oral or subcutaneous (preliminary data)
- Dosing for KLOW is less standardized
- Storage Stability
- Stable 28+ days at 2–8°C post-reconstitution
- Sensitive to oxidation; use within 14–21 days
- GHK-Cu more forgiving in storage conditions
- Bottom Line
- Proven tissue repair and anti-aging compound
- Promising metabolic peptide lacking clinical validation
- Choose GHK-Cu for established applications, KLOW for exploratory metabolic research