GLOW is a premixed vial of three peptides: GHK-Cu, BPC-157 and TB-500. The usual mix is 50 mg GHK-Cu plus 10 mg each of the other two, 70 mg total (a 5:1:1 ratio), but some vials differ, so always check the label. It's the Wolverine blend (BPC-157 + TB-500) with a copper peptide added for skin, and none of the three is an approved medicine. KLOW is the same idea with KPV added as a fourth peptide.
How it works
Each part targets a different piece of repair. In lab and animal studies, GHK-Cu (a copper-carrying peptide found in blood) turned on genes tied to collagen and skin repair, and BPC-157 and TB-500's parent protein, thymosin beta-4, helped blood vessels grow and cells move into wounds. The idea is skin repair plus deeper tissue healing in one shot, but that's a theory pieced together from separate studies.
What people use it for
Skin firmness, texture and healing
Injury recovery
Scar and wound healing
General recovery from training
The evidence
Mostly animal studies
No study has tested GLOW. Each part has lab or animal studies, and GHK-Cu has been used in skin creams, but there are no good human trials of any of the three as shots for healing. The only study that combined two of them (BPC-157 and TB-500, in rats) found no extra benefit, so the case for a three-way mix is theory, not proof.
1.4–2.1 mg of blend (about 1–1.5 mg GHK-Cu + 200–300 µg each of BPC-157 and TB-500)
How often
Once a day
When
Any time. Some prefer evening.
Cycle
4–6 weeks, then a break of similar length
Route
Subcutaneous injection
Why: Dose by BPC-157, the part with the best-known daily range. In a 5:1:1 vial, every 1 µg of BPC-157 also brings 5 µg of GHK-Cu, so GHK-Cu is what limits how high you can go. Example: add 3.5 mL of bacteriostatic water to a 70 mg vial. That makes 20 mg/mL of blend (about 2.9 mg/mL each of BPC-157 and TB-500, and 14.3 mg/mL of GHK-Cu). A 2 mg dose of blend is 0.1 mL, or 10 units on a U-100 insulin syringe, and carries about 285 µg each of BPC-157 and TB-500.
Low/starter
Reported
Dose
0.7 mg of blend (about 500 µg GHK-Cu + 100 µg each of the others)
How often
Once a day
When
Any time
Cycle
First 1–2 weeks
Route
Subcutaneous injection
Why: GHK-Cu often stings and can darken the skin where you inject. Starting low shows how you handle it. With the 3.5 mL mix above, this is 0.035 mL, or about 3.5 units.
Start at the low end, and change one thing at a time. If you take medication or have a health condition, check with a doctor first.
KLOW is GLOW plus a fourth peptide, KPV, which is aimed at gut and skin inflammation. If you're holding a 70 mg vial it's GLOW; an 80 mg vial is usually KLOW. Check your label.
Is the 50/10/10 ratio standard?
It's the most common, but not fixed. Some vials use different amounts, so always do your math from your own vial's label.
Why is there so much GHK-Cu?
GHK-Cu is usually taken at higher doses than the other two, so the bigger share lets one shot hit a typical amount of each. It also means GHK-Cu side effects, like stinging, set your limit.
Why is the liquid blue?
The copper in GHK-Cu makes it blue. That's normal, not a sign it has gone bad.
Sources
Pickart L, Margolina A. Regenerative and Protective Actions of the GHK-Cu Peptide in the Light of the New Gene Data. Int J Mol Sci. 2018;19(7):1987. PubMed 29986520
Staresinic M, et al. Gastric pentadecapeptide BPC 157 accelerates healing of transected rat Achilles tendon and in vitro stimulates tendocytes growth. J Orthop Res. 2003;21(6):976-83. PubMed 14554208
Malinda KM, et al. Thymosin beta4 accelerates wound healing. J Invest Dermatol. 1999;113(3):364-8. PubMed 10469335
Biçer O, et al. Effects of BPC-157 and TB-500 on Achilles tendon healing in rats: A histopathological and biomechanical study. Jt Dis Relat Surg. 2026;37(3):822-837. PubMed 42542926