KLOW blend
GLOW plus KPV. Same caveat: a vendor formulation, not a studied entity.
What it is
A four-way commercial blend: GHK-Cu, BPC-157, TB-500 and KPV.
What it does
Marketed for recovery with an added anti-inflammatory component.
Does it work?
As with GLOW, no trial has examined this combination. Each additional component multiplies the unknowns rather than the benefits.
Claims vs data
Each marketing claim, tagged by what the evidence actually supports.
| Adds an anti-inflammatory component to GLOW | partially true |
| The four-way combination is studied as one product | overreach |
Reference figures
Quoted from published reference material. These are not Peptuity recommendations.
The evidence, counted
Live counts from Europe PMC and ClinicalTrials.gov.
179 publications indexed, but only 2 randomised controlled trials and 3 registered interventional studies. Human evidence exists but is thin.
query: "GHK-Cu" · checked 2026-08-07
Most-cited literature
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Dissecting the Crosstalk Between Nrf2 and NF-κB Response Pathways in Drug-Induced Toxicity
Gao W, Guo L, Yang Y, Wang Y, Xia S, Gong H, Zhang BK, Yan M. · Front Cell Dev Biol 2021 · 231 citations
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Self-Assembling Peptide-Based Hydrogels for Wound Tissue Repair
Guan T, Li J, Chen C, Liu Y. · Adv Sci (Weinh) 2022 · 202 citations
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Redox chemistry of copper-amyloid-beta: the generation of hydroxyl radical in the presence of ascorbate is linked to redox-potentials and aggregation state
Guilloreau L, Combalbert S, Sournia-Saquet A, Mazarguil H, Faller P. · Chembiochem 2007 · 189 citations
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Bioactivities, Applications, Safety, and Health Benefits of Bioactive Peptides From Food and By-Products: A Review
Zaky AA, Simal-Gandara J, Eun JB, Shim JH, Abd El-Aty AM. · Front Nutr 2021 · 186 citations
Regulatory status
Formal, dated regulatory actions.
WADA — Prohibited List 2026
Blend of components that are individually prohibited in sport (WADA)
Common questions
How does KLOW differ from GLOW?
One added component: KPV, included for its anti-inflammatory profile. Everything else about the formulation logic is the same.
Does the fourth component strengthen the case?
It multiplies the unknowns. Four compounds with no combined trial data present more untested interactions than three, not fewer.
Are blend ratios standardised across vendors?
No. The same blend name can carry different ratios from different vendors — another reason blend names are marketing, not science.
Related compounds
GLOW blend
A vendor blend of GHK-Cu, BPC-157 and TB-500 — not a studied product.
KPV
Anti-inflammatory tripeptide fragment of alpha-MSH.
GHK-Cu
The best human evidence of any ‘cosmetic’ peptide — but topically, not injected.
BPC-157
Extensive animal healing data. Essentially no controlled human trials.