Scientifically reviewed by Dr Stephan Hansberg
What is the KLOW Pen?
KLOW is the GLOW formulation plus KPV: what that fourth component adds, the resulting mass per click, and how the combination compares to GLOW and WOLVERINE.
Key takeaways
- •KLOW contains everything in GLOW (GHK-Cu, BPC-157, TB-500) plus KPV at 15mg, for a total of 120mg per cartridge.
- •Each 0.01ml click of the KLOW Pen dispenses 0.400mg of the combined formulation.
- •KPV is a tripeptide fragment of alpha-melanocyte-stimulating hormone, studied separately in inflammatory-signalling research.
- •As with GLOW, the KLOW name is a market convention, and the exact per-component mass is what matters for research purposes.
- •The KLOW certificate is being re-issued and is not yet published; when published it should report each of the four components separately.
What is in the cartridge
The KLOW Pen contains the same three-compound base as GLOW, GHK-Cu at 75mg, BPC-157 at 15mg and TB-500 at 15mg, with a fourth component, KPV, added at 15mg. This brings the total mass per 3ml cartridge to 120mg, and each 0.01ml click dispenses 0.400mg of the combined formulation across 300 clicks per cartridge.
What KPV adds to the formulation
KPV (Lys-Pro-Val) is a tripeptide corresponding to the smallest active fragment of alpha-melanocyte-stimulating hormone (alpha-MSH), and it is studied separately in the literature on inflammatory cell signalling, including work looking at pathways such as NF-kB signalling in cell models. Our dedicated guide to KPV covers its structure and why researchers study a three-residue fragment rather than the full alpha-MSH hormone.
As with the other components, including KPV in this cartridge is a formulation choice that allows researchers to work with all four compounds from a single pen, rather than evidence that the four-compound combination itself has been studied as a unit in published trials.
KLOW compared with GLOW and WOLVERINE
The clearest way to see the difference between these three Celyfe pens is side by side, since the names alone do not indicate the exact composition.
| Pen | Components | Total mass | Per click |
|---|---|---|---|
| GLOW | GHK-Cu 75mg, BPC-157 15mg, TB-500 15mg | 105mg | 0.350mg |
| KLOW | GHK-Cu 75mg, BPC-157 15mg, TB-500 15mg, KPV 15mg | 120mg | 0.400mg |
| WOLVERINE | BPC-157 15mg, TB-500 15mg | 30mg | 0.100mg |
What the certificate of analysis covers
The KLOW certificate is being re-issued and is not yet published, so no KLOW purity or content result is claimed here. A certificate of analysis documents the chemical quality of the formulation as manufactured and does not represent a claim about any effect of the four compounds in combination.
A market name, not a regulated term
Like GLOW and WOLVERINE, KLOW is a naming convention used in the research peptide market rather than a standardised term with a fixed legal definition, so composition can vary between suppliers using a similar name. Checking the exact per-component mass on the listing, and on the certificate once published, rather than relying on the product name, is the more reliable way to know what a cartridge contains.
Research use only
The KLOW Pen is supplied for laboratory and research use only. Nothing in this guide describes or implies administration to a human or animal body, and none of the components are licensed medicines or supplements.
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