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Longevity & Skin
The body's main antioxidant — popular for skin lightening, with thin evidence for it.
Longevity & Skin
A three-peptide blend pairing the Wolverine stack with GHK-Cu.
Glutathione is not FDA-approved and rated 3/5 for evidence; GLOW is not FDA-approved and rated 2/5. Glutathione has more human evidence behind it. GLOW is banned in sport by WADA; Glutathione is not. Both are used for longevity & skin goals.
| Compare | Glutathione The body's main antioxidant — popular for skin lightening, with thin evidence for it. | GLOW A three-peptide blend pairing the Wolverine stack with GHK-Cu. |
|---|---|---|
| Category | Longevity & Skin | Longevity & Skin |
| Evidence | 3/5A handful of small human trials (mostly oral, a few IV) with modest, inconsistent skin-lightening results. Well-studied as a natural molecule, but not as a cosmetic drug. | 2/5No studies of the blend itself. BPC-157 and TB-500 are mostly animal data; GHK-Cu's human data is topical. |
| FDA status | Not FDA-approved; oral forms sold as supplements | Not FDA-approved |
| WADA (sport) | Not on the Prohibited List | Banned |
| Also known as | GSH, Reduced glutathione, L-Glutathione, γ-Glutamyl-cysteinyl-glycine | GLOW blend, BPC-157 + TB-500 + GHK-Cu |
| How it works | Its cysteine thiol (-SH) group neutralizes reactive oxygen species and recycles other antioxidants. For skin, it is thought to shift melanin production from dark eumelanin toward lighter pheomelanin and to inhibit tyrosinase, the enzyme that starts melanin synthesis. How much of an injected dose reaches skin cells is unclear — it is broken down quickly in blood. | BPC-157 supports local repair and blood-vessel growth, TB-500 helps cells move to injured tissue, and GHK-Cu delivers copper and drives collagen signaling. How they act together has not been studied. |
| Half-life | Very short in blood after IV (minutes); levels return to baseline quickly | Mixed: each component differs; all are short-acting signals |
| Commonly reported doses |
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| Route | Intramuscular or subcutaneous | Subcutaneous |
| Good once mixed | ~14 days in the fridge | ~28 days in the fridge |
| Top side effects |
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| Lowest research-listing price per mg | $0.02 (1500 mg vial, 40% off) | $0.77 (70 mg vial, 40% off) |
| Latest lab purity | 99.41% (lot GLT0003) | 99.44% (lot GLW0002) |
Want a third? Add another peptide. Doses are commonly reported ranges, not recommendations.
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Glutathione is not FDA-approved and rated 3/5 for evidence; GLOW is not FDA-approved and rated 2/5. Glutathione has more human evidence behind it. GLOW is banned in sport by WADA; Glutathione is not. Both are used for longevity & skin goals.
Glutathione: Not FDA-approved; oral forms sold as supplements. GLOW: Not FDA-approved. Regulations change, so confirm with the FDA.
Glutathione is rated 3 out of 5: A handful of small human trials (mostly oral, a few IV) with modest, inconsistent skin-lightening results. Well-studied as a natural molecule, but not as a cosmetic drug. GLOW is rated 2 out of 5: No studies of the blend itself. BPC-157 and TB-500 are mostly animal data; GHK-Cu's human data is topical. The scale is explained on our methodology page.
Glutathione is not named on the WADA list, though the general rule on non-approved substances (S0) can still apply. GLOW is banned by WADA, by name or as part of a named class.