At HEEZ Research, a 70 mg vial of the GLOW blend costs $125 as of October 2026 $1.79 per mg, if you break it down. Buy it in a five-vial bundle and the same material works out to $1.07 per mg. Is $125 a lot? That depends entirely on the comparison. Two comparisons actually mean something here: what you pay per milligram, and what the three components would cost bought one by one.
In one GLOW vial you get three research peptides, lyophilized together: GHK-Cu, BPC-157 and TB-500. KLOW, its sibling, runs the same idea with a fourth peptide KPV — thrown in and an 80 mg vial in place of the 70 mg one. The blend is on the market because tissue repair and skin researchers tend to look at all three compounds together anyway.
Composition and evidence base
GHK-Cu is a tripeptide that binds copper and occurs naturally in plasma. It has been studied for decades mostly in skin and connective tissue models for its links to collagen production and gene expression, and the 2018 review by Pickart and Margolina in the International Journal of Molecular Sciences (PMID 29986520) sums that literature up well. By weight it is usually the biggest share of the blend, which probably explains most of the “glow” branding.
BPC-157 comes from a gastric protein a fragment of it 15 amino acids long. Most of what backs it up is rodent work on tendon, muscle and gut healing; one rat Achilles tendon study from 2003 gets cited constantly (PMID 14554208). The findings are interesting. They are also nearly all animal data.
TB-500 is a synthetic peptide built on the active region of thymosin beta-4, a protein involved in cell migration and wound repair. Back in 1999, a study showed the parent protein speeding wound closure in rats (PMID 10469335).
The ratio you will see listed most often is 50 mg GHK-Cu, 10 mg BPC-157 and 10 mg TB-500 — 70 mg in total. Not every listing states one. If proportions matter to your study design, ask, and check that the certificate reports net content for the blend.
GLOW is sold for lab use only, as a research blend. Nobody should mistake it for a drug, a supplement or a cosmetic, and it has no approval for human use.
Pricing and the per-milligram calculation
HEEZ Research a research peptide supplier based in the US sells its GLOW peptide blend in 70 mg vials in two bundle tiers:
| Package | Total price | Cost per vial | Cost per mg |
| 1 vial (70 mg) | $125 | $125.00 | $1.79 |
| 3 vials (buy 2, get 1 free) | $250 | $83.33 | $1.19 |
| 5 vials (buy 3, get 2 free) | $375 | $75.00 | $1.07 |
The maths is simple enough: divide the total price by the total milligrams and you have the cost per mg. Moving from one vial to the five-vial tier cuts it by 40% for identical material. So for any project running longer than a few weeks, the bundle maths is worth doing first. Take a project that needs 350 mg of the blend. Bought as five single vials, the material works out at $1.79 per mg. One three-vial bundle plus two singles brings it to $1.43 per mg. And one five-vial bundle brings it down to $1.07 per mg. Same quantity, different packaging and the total moves by $250.
The second comparison sets the blend against its parts. Use HEEZ’s own single-vial prices and the 50/10/10 split, and the parts price out like this: $50 for the 50 mg GHK-Cu vial, $70 for the 10 mg BPC-157 vial, $95 for the 10 mg TB-500 vial. Rebuilding one GLOW vial that way costs $215, against $125 for the blend roughly 42% less before any bundle discount. A combo meal works the same way: cheaper than the burger, fries and drink ordered separately, but you take it as it comes. None of that helps when the design has to vary one compound at a time or test a different ratio — then separate vials are the right call. When the combination itself is what you’re studying, the blend is the cheaper route.
Well, why does the price sit where it does? Before blending, each of the three components is synthesized and purified on its own, and TB-500 the priciest of the three to buy alone hints at what it costs to make. Getting each component to 99% purity or higher takes time and solvent. A weak component is also harder to spot inside a blend, because the impurities of all three overlap on the same HPLC run. Proper certification therefore gets more demanding: a good GLOW certificate confirms identity, reports purity and ideally reports net content. That costs more than one generic purity number, and honestly it is worth more. Multi-vial tiers cut the per-vial cost by 33 to 40 percent. Fast domestic shipping protects the material. Heat and long transit don’t.
A few costs sit outside the vial price. Bacteriostatic water is needed to reconstitute, and HEEZ lists it at $7 for a 3 ml bottle. The three-vial bundle at $250 qualifies for free shipping. Once reconstituted, the material needs the fridge and has a limited usable window. With three peptides in one vial, that means three stability profiles to track once the water goes in so buying past what a project will use in that window just turns into waste. All sales at HEEZ Research are final.
Assessing a listing
For orientation: $125 per 70 mg vial, dropping to $83.33 in a three-pack and $75 in a five-pack, is the documented reference point here. A single 70 mg vial priced far under $80 deserves a closer look. So does a listing with no stated ratio and no answer when you ask, one generic purity number with no identity confirmation, or certificates that look recycled, undated or edited. Dosing protocols, skincare claims and before-and-after photos are another warning sign, because a real research supplier does not market peptides for personal use. It looks like those listings lean on marketing precisely because they cannot lean on documentation and so far that pattern has been a decent filter.
The fair comparison is the lowest cost per verified milligram. A supplier that meets that bar publishes lot-specific test results, lists vial size and composition, ships fast within the US and sells strictly for research use. HEEZ Research stocks GLOW in 70 mg lyophilized vials, with a third-party certificate for the current lot and same-day UPS shipping on weekday orders placed before 2 PM ET. Labs working with several compounds can find the supplier’s other research peptides listed in one place.
So all in: GLOW costs $125 per 70 mg vial in 2026 drops to $75 per vial $1.07 per mg in the five-vial tier, and undercuts the separate-vial route by about 42% before discounts. Confirm the ratio and the certificate before ordering, and most of the remaining questions about whether a price is fair settle themselves.
