KLOW vs Glow: what is actually different
One extra ingredient. It changes less than people think about the dose, and more than people think about everything else.
Neither one is a branded product. They are community recipes, so what is in them varies by supplier. The numbers below are the ones that matched across every source we checked. No label anywhere backs them.
What is in the vial
| Glow — 70 mg | KLOW — 80 mg | |
|---|---|---|
| GHK-Cu | 50 mg | 50 mg |
| BPC-157 | 10 mg | 10 mg |
| TB-500 | 10 mg | 10 mg |
| KPV | — | 10 mg |
KLOW is Glow plus 10 mg of KPV. The K in KLOW is the KPV. Nothing else changes, not even the GHK-Cu that makes up most of the weight in both.
The extra 10 mg does not dilute anything
People get this backwards more than anything else on this page. An earlier version of this page got it backwards too. Adding a fourth peptide does not cut your share of the other three. Each ingredient's strength depends only on its own weight and the water you added. What else is in the vial makes no difference.
Put 2.50 mL into either vial and draw 0.10 mL:
| Per 0.10 mL draw | Glow | KLOW |
|---|---|---|
| GHK-Cu | 2.000 mg | 2.000 mg |
| BPC-157 | 400 mcg | 400 mcg |
| TB-500 | 400 mcg | 400 mcg |
| KPV | — | 400 mcg |
Identical to three decimal places, for everything the two vials have in common. KLOW does not give you less of anything. It gives you one more thing. Whether you want that is not a question this site answers.
But that one ingredient changes three other things
KPV is the only difference in the ingredient list. It also happens to be the ingredient with the most strings attached:
- 10 mg of KPV is not 10 mg of peptide. KPV ships as a salt. The peptide itself is 342.4 of the salt's 456.5 g/mol, so if your supplier weighed the salt, that 10 mg actually holds about 7.5 mg of KPV and 2.5 mg of salt. None of the other three ingredients has that problem. The arithmetic
- It is why we cannot work out KLOW's water for you. To pick a volume, the calculator checks every ingredient against a sourced limit for how much will dissolve. We have that for GHK-Cu, BPC-157 and TB-500. For KPV the only figure we could find is a rough range in PBS, a lab salt solution — not a measured maximum in water. So it never enters the math at all.
- It is the least studied of the four. One of the six papers we cite looked at KPV. It fed the peptide to mice inside nanoparticles, as a gut inflammation study — nothing like how this vial gets used. What the research studied
So which calculator do I use
Glow works out the water for you. Tell it how much you want per draw, and it finds the water amount that puts your draw on a printed syringe line.
KLOW runs the other way round. You tell it how much water you added, and it tells you which line that lands on and what each draw contains. Same math, opposite direction — and no made-up solubility number holding it together.
We would rather switch a feature off than guess at a number that decides your strength. The full gap list for KLOW.