The Copper Peptide
That Rebuilds
Skin & Hair
GHK-Cu (Glycyl-L-histidyl-L-lysine copper complex) activates over 4,000 genes. It simultaneously stimulates new collagen, breaks down damaged fibers, restores skin density lost through hormonal aging — and reactivates dormant hair follicles through Wnt pathway signaling. For men and women.
4,000+
Genes Activated
Skin, hair & repair pathways
99.3%
HPLC Purity
3rd Party Verified
Skin + Hair
Dual Action
Injectable, topical & scalp
Copper peptide complex · ISO/IEC 17025 certified · Injectable & topical available
The Copper Complex Is
The Science Working
GHK-Cu is not just another skincare peptide — it is a naturally occurring copper complex found in human plasma, saliva, and urine. The copper ion is what gives GHK-Cu its remarkable biological power, enabling it to modulate enzyme activity, activate the LOX enzyme responsible for cross-linking collagen fibers, and function as a potent antioxidant within the dermal layer.
The copper(II) ion bound to the glycyl-L-histidyl-L-lysine tripeptide chain is what allows GHK-Cu to penetrate the dermal layer and signal skin cells directly. This copper-peptide bond is what separates GHK-Cu from simpler skincare peptides and explains why its results are structural — not just surface-level.
Rejuven GHK-Cu 50mg is tested for active copper content via ICP-MS spectrometry — a specialized test for metal quantification that less rigorous suppliers skip — ensuring every vial contains a fully active copper-peptide complex.
Copper Content Verified. Rejuven GHK-Cu is independently tested via ICP-MS copper quantification — confirming the active copper-peptide complex in every vial.
Four Ways GHK-Cu Transforms Skin
GHK-Cu doesn't just moisturize. It doesn't just plump. It fundamentally restructures the skin's biology — from the gene expression level up through visible surface appearance.
Collagen & Elastin Synthesis
GHK-Cu directly activates fibroblast cells — the factories responsible for producing collagen Types I, III, and IV as well as elastin. Studies show up to a 70% increase in skin collagen with consistent GHK-Cu use, restoring the structural scaffolding that makes skin appear firm, plump, and youthful.
- +70% collagen increase
- Types I, III & IV activated
- Fibroblast reactivation
Bidirectional Skin Remodeling
Unlike simple collagen creams that only add surface moisture, GHK-Cu performs a dual action: it breaks down old, damaged, cross-linked collagen fibers (which cause visible wrinkles and rough texture) while simultaneously building fresh, organized collagen. This remodeling — not just supplementing — is what creates lasting structural change.
- Degrades damaged collagen
- Builds organized new fibers
- Reduces deep line depth
Gene Expression Activation
GHK-Cu has been shown to modulate the expression of over 4,000 human genes — including antioxidant defense genes, anti-inflammatory pathways, DNA repair genes, and stem cell activation signals. This makes it far more than a topical cosmetic ingredient: it is a molecular signal that tells your skin to rejuvenate itself from within.
- 4,000+ genes modulated
- DNA repair pathways activated
- Stem cell signals restored
Hyaluronic Acid & Hydration
GHK-Cu stimulates glycosaminoglycan synthesis — including hyaluronic acid — which is responsible for skin's moisture-binding capacity and plumpness. As sex hormones decline in both men and women, hyaluronic acid production drops dramatically, leading to hollow, deflated-looking skin. GHK-Cu restores this independently of hormonal levels.
- ↑ HA synthesis
- Deeper hydration layers
- Plumpness restoration
Hair Follicle Reactivation
GHK-Cu activates the Wnt/β-catenin signaling pathway and upregulates vascular endothelial growth factor (VEGF) — both essential for inducing the anagen (active growth) phase in dormant follicles. Applied topically to the scalp, GHK-Cu increases follicle size, stimulates new hair shaft production, and improves hair density. Clinical studies show measurable regrowth in 8–12 weeks of consistent use.
- Wnt pathway activation
- VEGF upregulation
- Follicle size increase
Is Hair Loss a Problem? GHK-Cu Can Help.
GHK-Cu is one of the most clinically supported peptides for hair follicle reactivation. It works by activating the Wnt/β-catenin pathway — the same signaling cascade that controls whether a follicle is in active growth (anagen) or dormant (telogen) phase. Applied topically to the scalp twice daily, GHK-Cu has been shown to increase follicle size, stimulate new hair shaft production, and improve overall hair density in both men and women.
Apply GHK-Cu solution directly to scalp thinning areas 2x daily
Use a 0.5–1.0mm dermaroller before application to maximize absorption
Combine with subcutaneous injections for systemic follicle support
Expect visible results at 8–12 weeks of consistent use
8–12 wks
Avg. Visible Regrowth
Wnt + VEGF
Pathways Activated
Men + Women
Effective For
GHK-Cu Declines 60% by Age 60
Your body produces GHK-Cu naturally — at its peak. At age 20, plasma GHK-Cu is approximately 200 ng/mL. By 60, it has dropped to ~80 ng/mL in both men and women. That 60% decline directly maps onto the visible acceleration of skin aging regardless of sex. Supplementing restores the signaling your skin needs to keep regenerating.
Why Men Age
Differently — And How
GHK-Cu Addresses It
Male skin is structurally different from female skin — it's approximately 25% thicker, produces more sebum, and has a higher baseline collagen density. For decades, this led to the assumption that men age better. The reality is more nuanced: men age more slowly in their 30s, then experience a sharper, more compressed decline in their 40s and 50s as testosterone drops.
Testosterone directly regulates collagen synthesis in male skin. As levels decline — typically 1–2% per year after age 30 — the structural integrity of the dermis deteriorates rapidly. Combined with decades of sun exposure, daily shaving-induced barrier disruption, and a near-universal absence of targeted skincare, men often arrive at 50 with significant structural skin aging that feels sudden but has been building for years.
GHK-Cu addresses male skin aging at the biological root — not the surface. By reactivating fibroblast collagen production, repairing DNA damage from UV exposure, and restoring the skin's own regenerative signaling, it delivers the structural results that no moisturizer or retinol can match.
Testosterone & Collagen
Men produce collagen at a higher rate than women in their 20s and 30s — but testosterone decline after 40 triggers a sharp drop in collagen synthesis. By 50, men lose collagen at a rate comparable to post-menopausal women, with the added challenge of thicker skin that makes structural loss more dramatic when it finally shows.
Sun & Environmental Damage
Men are statistically less likely to use SPF daily, making UV-induced collagen degradation a primary driver of visible aging. GHK-Cu's ability to activate DNA repair genes and break down damaged collagen fibers makes it especially effective at reversing the accumulated sun damage most men carry by their 40s.
Shaving & Barrier Disruption
Daily shaving chronically disrupts the skin barrier, accelerating transepidermal water loss and micro-inflammation. GHK-Cu's anti-inflammatory gene activation and barrier-repair signaling directly address this — making it uniquely suited to male skin physiology in ways generic skincare products are not.
Hair Follicle Activation
GHK-Cu activates the Wnt signaling pathway and upregulates vascular endothelial growth factor (VEGF) — both critical for hair follicle health. Clinical studies show GHK-Cu increases hair follicle size and stimulates growth, making it a dual-action solution for men addressing both skin aging and hair thinning simultaneously.
Male Skin Thickness
Male
~2.5mm avg
Female
~2.0mm avg
Thicker baseline, sharper late-stage loss
Collagen Decline Onset
Male
Gradual 30s, sharp 45+
Female
Accelerates post-menopause
Different timing, same endpoint
GHK-Cu Response
Male
Strong — esp. texture & density
Female
Strong — esp. firmness & lines
Effective across both biologies
Skin Transformations
From acne scars to aging skin — real people are using GHK-Cu to rebuild density, erase damage, and get their glow back at every age.
Before: Severe cystic acne scarring, enlarged pores, uneven texture, and post-inflammatory marks across cheeks and jawline. Felt like she tried everything.
I was ready to give up. Three years of cystic acne left my face scarred and my confidence shattered. I tried retinol, peels, even microneedling — nothing actually changed the texture. Eight weeks of GHK-Cu and my skin looks like it belongs to someone else. The scars are fading, my pores are actually smaller, and for the first time in years I don't wear foundation. My boyfriend noticed before I did.
Isabella R., 22
Miami, FL
Visibly faded
Scarring
Minimized
Pores
Radiant
Glow
Diana L., 56
Miami, FLVisibly restored
Firmness
Softened 60–70%
Lines
Smooth & dense
Texture
“People stopped me at my daughter's wedding to ask if I'd had Botox. I haven't touched my face. After 10 weeks of GHK-Cu injections combined with the facial cream, my skin is dense and firm the way it felt in my 30s. The lines on my forehead are still there but they're soft — like they belong. My face looks like mine again.”
Injectable + Facial Cream
James R., 52
Dallas, TXTightened
Jawline
Smoother
Texture
Softened
Creases
“I wasn't expecting much — I figured skincare was just not something that worked for men my age. Ten weeks in and my wife keeps asking what I'm doing differently. My skin looks tighter, the deep lines on my forehead have softened, and the rough texture I'd had for years is just gone. I'm a convert.”
Injectable Protocol
Maria C., 44
Los Angeles, CASignificantly faded
Scarring
Restored
Plumpness
Radiant
Glow
“I started noticing my skin looked deflated — like the volume was just gone. After 8 weeks of GHK-Cu I look genuinely rested and firm. The acne scarring I've had for 15 years has visibly faded. I use both and together they work like nothing I've ever tried in 20 years of skincare.”
Injectable + Facial Cream
Derek W., 47
Seattle, WAFading
Sun Damage
↑ Restored
Elasticity
Evened out
Tone
“Years of hiking and outdoor work had taken a real toll on my skin. I had deep crow's feet, sun spots, and skin that just looked weathered. Twelve weeks of GHK-Cu and the difference is genuinely shocking. My skin looks like it did in my mid-30s. The sun damage is fading and the texture is completely different.”
Injectable + Facial Cream
Rachel B., 49
New York, NYTightened
Laxity
Softened
Folds
↑ Visibly
Density
“I've spent thousands on professional facials and laser treatments. GHK-Cu did more for my skin's actual structure in 12 weeks than everything else combined. My dermatologist asked what I was doing because my skin looked denser on her handheld imaging tool.”
Injectable Protocol
Marcus T., 44
Chicago, IL↑ Noticeably
Density
Filling In
Hairline
Thicker
Texture
“I was skeptical — I'd tried minoxidil for two years with barely any result. My barber noticed the difference before I did. At week 10 he asked if I'd changed something because the crown was filling in. By week 14 I had visible new growth along the hairline. The scalp application combined with the injections is the real protocol.”
Injectable + Scalp Topical
Sophia K., 38
Austin, TXStopped
Shedding
Restored
Volume
Regrown
Temples
“Post-partum hair loss is brutal and nobody talks about it. I lost so much volume and my temples were visibly thin. GHK-Cu scalp application twice a day for 10 weeks — the shedding stopped by week 3, and by week 10 I had real regrowth at the temples. My hair feels thicker than before I was pregnant.”
Injectable + Scalp Topical
Elena R., 24
Miami, FLEvened out
Pigment
Faded
Spots
Radiant
Glow
“I never wore sunscreen growing up — typical Miami girl. By 24 I had dark spots and fine lines that made me look way older. My abuela actually recommended I try GHK-Cu after she saw results herself. Eight weeks later my skin tone is completely even, the sun spots are fading, and I finally feel confident without makeup. My boyfriend says I look like I'm glowing from the inside.”
Injectable + Facial Cream
4.9 / 5
Average Rating
99.3%
HPLC Purity
8–12 wks
Avg. Visible Results
4,000+
Genes Activated
* Individual results vary. These testimonials represent personal experiences. Results achieved as part of a comprehensive skincare protocol. These statements have not been evaluated by the FDA.
Injectable + Topical — The Complete Protocol
GHK-Cu Injectable 50mg
Subcutaneous injection delivers GHK-Cu systemically — reaching the deep dermal layers where collagen-producing fibroblasts live. Also reactivates dormant hair follicles via Wnt/VEGF signaling when applied topically to the scalp, supports anti-inflammation, and drives systemic tissue repair.
- 1Reconstitute with bacteriostatic water
- 2Inject 1–2mg subcutaneously daily or every other day
- 3For hair regrowth: apply diluted solution directly to scalp 2x daily
- 4Store at 2–8°C after reconstitution
GHK-Cu Facial Cream
Our Signature Facial Cream delivers 0.5% active GHK-Cu complex directly to facial skin twice daily. Formulated with hyaluronic acid, niacinamide 5%, and vitamin C derivative for a complete anti-aging daily ritual.
- 1Apply pea-sized amount to clean dry skin
- 2Massage in upward circles morning and evening
- 3Follow with SPF in the morning
- 4Results visible in 4–6 weeks with consistent use
Best Results: Use Both Together
The injectable peptide delivers deep structural collagen remodeling. The facial cream maintains daily surface stimulation. Together they create a 24/7 skin renewal environment that neither achieves alone.
GHK-Cu FAQ
GHK-Cu is Glycyl-L-histidyl-L-lysine copper(II) complex — a naturally occurring tripeptide found in human plasma, saliva, and urine. The copper ion bonded to the peptide chain is what gives it its extraordinary biological power: it modulates enzyme activity, activates the LOX enzyme responsible for cross-linking collagen fibers, and functions as a potent antioxidant within the dermal layer. It is the most extensively studied copper-peptide complex in anti-aging science.
Ready to start your skin transformation?
Available as injectable peptide and daily facial cream.
Your Skin Can Look
Like This Again
99.3% purity. Copper content verified by ICP-MS. Designed for hormonal skin aging. Available as injectable peptide and daily facial cream.