5 Best GHK-Cu Stacks: GLOW, Wolverine and More

This guide is for educational purposes only and is not medical advice. GHK-Cu is not FDA approved to treat any condition, and compounded medications have not been reviewed by the FDA for safety, effectiveness, or quality. BPC-157 and TB-500 are not FDA approved. Talk with a licensed clinician before combining any peptides.

A stack is a combination of ingredients used together for a shared goal. GHK-Cu, a copper peptide that supports collagen and skin repair, is one of the most stacked peptides, from prescription skin creams to injectable blends sold online.

The evidence behind these stacks varies widely. On the skin, GHK-Cu has 12 week studies showing improved firmness, fine lines, and skin density, and it is often paired with ingredients that have strong research of their own. Injectable stacks such as GLOW and Wolverine rely mostly on animal studies. We ranked 5 popular stacks by what the human evidence shows.

GHK-Cu Stacks Compared

Full Reviews

1. GHK-Cu and Tretinoin: Best skin stack

Tretinoin is the best studied topical treatment for skin aging, with a systematic review of randomized trials supporting it as an effective treatment for photoaging. Pairing it with GHK-Cu adds a gentle ingredient that supports collagen. Cashmere combines GHK-Cu, tretinoin, niacinamide, and caffeine in one prescription cream after a clinician review, which avoids layering separate products that can irritate when applied together.

Not for: pregnancy or breastfeeding, or very sensitive skin that cannot tolerate retinoids.
Our score breakdown: Evidence 8, Results 8, Convenience 9, Safety 7, Access 9.

2. GHK-Cu and Estriol: Best for menopausal skin

Falling estrogen after menopause thins the skin and reduces firmness. In a 6 month study of 59 women, topical estriol improved elasticity and firmness and increased type III collagen. Stella+ stacks estriol with GHK-Cu, tretinoin, and niacinamide in a prescription cream for postmenopausal skin, and a clinician reviews your history first to check that estriol is appropriate.

Not for: anyone advised to avoid estrogen, or during pregnancy or breastfeeding.
Our score breakdown: Evidence 7, Results 8, Convenience 9, Safety 6, Access 8.

3. GHK-Cu With Hyaluronic Acid and Niacinamide: Best gentle stack

This is the simplest stack and the easiest to tolerate. In lab and skin sample tests, GHK-Cu combined with hyaluronic acid increased collagen IV more than either alone, although this has not been confirmed in people. Niacinamide supports the skin barrier and has no known conflict with copper peptides. A prescription GHK-Cu cream can be layered with an over the counter hyaluronic acid or niacinamide serum.

Not for: anyone with a known copper sensitivity.
Our score breakdown: Evidence 5, Results 5, Convenience 7, Safety 10, Access 10.

4. GLOW Stack: Popular but untested

The GLOW stack combines GHK-Cu, BPC-157, and TB-500, usually as an injectable blend promoted for skin, hair, and recovery. A variant called KLOW adds KPV. No published human studies have tested these peptides together. BPC-157 has only three small human studies, rated very low certainty, and topical thymosin beta 4, the protein TB-500 comes from, did not significantly improve healing in a phase 2 ulcer trial. GHK-Cu for injection is on an FDA list of bulk substances that may present significant safety risks in compounding, with concerns about immune reactions and limited human data. Many GLOW blends sold online are labeled for research use only, a practice the FDA has addressed in warning letters to peptide sellers. Approaches that combine topical and injectable routes are covered in this overview of combination GHK-Cu protocols. TB500.org, a sister site in our portfolio, offers a Glow blend by prescription after a clinician assessment.

Not for: anyone seeking proven results, or products without a prescription from a licensed pharmacy.
Our score breakdown: Evidence 2, Results 2, Convenience 3, Safety 3, Access 5.

5. Wolverine Stack: Mostly animal evidence

The Wolverine stack pairs BPC-157 and TB-500 for tendon, muscle, and joint recovery. It does not include GHK-Cu, but it is often compared with GLOW. Both peptides have strong animal data and very little human evidence, and neither is FDA approved. In July 2026, an FDA advisory committee reviewed BPC-157 and TB-500 for possible compounding use, but its votes are advisory and no final decision has been made. The evidence for each peptide is compared in more detail in this ranking of the best peptides for healing. TB500.org, a sister site in our portfolio, offers a Wolverine blend by prescription after a clinician assessment.

Not for: anyone seeking proven results, competitive athletes subject to drug testing, or anyone without clinician oversight.
Our score breakdown: Evidence 1, Results 2, Convenience 3, Safety 3, Access 5.

What Do You Stack GHK-Cu With?

For skin, the best supported partners are tretinoin, estriol after menopause, hyaluronic acid, and niacinamide. For hair, GHK-Cu is sometimes used alongside minoxidil, though we found no clinical trials of the combination. Injectable stacks with BPC-157 and TB-500 are popular online but untested in people. Some online stacks also add retatrutide, a weight loss drug that is still investigational and not FDA approved, and it has not been studied together with GHK-Cu.

What Is the Recommended Dosing for the GLOW Stack?

There is no established dose, because the GLOW stack has never been studied in human trials. Doses posted online come from sellers and forums. For GHK-Cu on its own, GHK-Cu dosage depends on the form and is set by a prescribing clinician.

Can You Take Vitamin C and GHK-Cu Together?

There is no known interaction between oral vitamin C and topical GHK-Cu. On the skin, apply vitamin C serum in the morning and GHK-Cu at night. Acids, retinoids, and strong antioxidants are also best kept apart, as this rating of what not to mix with copper peptides shows.

Is It Safe to Stack Peptides?

Combining ingredients in a prescription cream made by a licensed pharmacy is a well established approach. Stacking injectable peptides is different: each added peptide adds unknowns about purity, dosing, and side effects. Medications and health conditions also matter, and known GHK-Cu drug interactions and contraindications should be reviewed with a clinician.

What the Evidence Does and Does Not Support

The evidence supports topical stacks built around well studied ingredients such as tretinoin and estriol, with GHK-Cu as a supporting ingredient. Synergy between GHK-Cu and hyaluronic acid has only been shown in lab tests. There are no published human studies of the GLOW, KLOW, or Wolverine stacks, and BPC-157 and TB-500 are not FDA approved. Results vary from person to person.