KLOW vs GLOW: How the Two Peptide Blends Differ
GLOW and KLOW are research blends that put several well-studied peptides into a single vial at a fixed ratio. They are close relatives. The whole difference comes down to one added ingredient.
What is in each blend.
| GLOW vial | KLOW vial | GLOW capsule | |
|---|---|---|---|
| GHK-Cu | 50 mg | 50 mg | 2 mg |
| BPC-157 | 10 mg | 10 mg | 500 mcg |
| TB-500 | 10 mg | 10 mg | 500 mcg |
| KPV | — | 10 mg | — |
| Total | 70 mg | 80 mg | 3 mg per capsule |
| Ratio | 5 : 1 : 1 | 5 : 1 : 1 : 1 | 4 : 1 : 1 |
KLOW is GLOW plus 10 mg of KPV. The K is usually read as a nod to that extra peptide.
The shared base: GHK-Cu, BPC-157 and TB-500.
GHK-Cu is a copper-binding tripeptide first found in human plasma, with a long publication record in skin, collagen and gene-expression research. It makes up most of each blend by mass. Because it is so small, formulations include it at a higher weight than the larger peptides.
BPC-157 is a 15-residue fragment of a gastric protein, studied in rodent models of tendon, ligament and gut-lining repair.
TB-500 is a synthetic peptide based on thymosin beta-4, a protein that binds actin and helps cells move. It is studied in cell migration and repair models. The BPC-157 + TB-500 blend pairs just these two.
What KPV adds.
KPV is the three-residue tail of α-MSH, studied mainly in models of intestinal and skin inflammation. Adding it gives KLOW a fourth mechanism alongside the tissue-model focus of the other three. For more, see what is KPV peptide.
How researchers choose.
- GLOW suits work on the three-peptide combination, without an inflammation-signalling component.
- KLOW suits work that wants KPV in the same fixed ratio.
- GLOW capsules suit oral-model designs, at a 4 : 1 : 1 ratio set for fixed oral units.
- Single compounds suit designs that need to vary one ingredient at a time.
The evidence behind every component is preclinical, and neither blend has been studied as a finished product. Blends are a convenience for laboratories that want a consistent ratio from one preparation.
Formats and documentation.
See the GLOW blend vial (70 mg), the KLOW blend vial (80 mg) and GLOW capsules. Every lot is third-party HPLC tested, with certificates in our COA library.
Questions.
What is the difference between KLOW and GLOW?
KLOW contains everything in GLOW plus 10 mg of KPV, for 80 mg in total against GLOW’s 70 mg.
Why is GHK-Cu the largest ingredient?
It is a very small tripeptide, so blends include it at a higher mass than the larger peptides.
Is the GLOW capsule the same ratio as the vial?
No. The vial is 5 : 1 : 1; the capsule is 4 : 1 : 1 (2 mg, 500 mcg and 500 mcg).
Are these blends approved for human use?
No. They are sold for laboratory research only.
For laboratory research use only. Not for human or veterinary use. Nothing in this article is medical advice or guidance on human use.