Nossos produtos são clinicamente testados por terceiros
Leia Mais
×
Experimente resultados com confiança
Se a Hairgenetix não entregar resultados em 4 meses, obtenha um reembolso total em apenas 3 passos simples.
Trusted by hundreds e rated
Com uma classificação 'Excelente' de 4,6 estrelas, baseada em mais de 1.200 avaliações, a confiança dos nossos clientes no Hairgenetix reflete os resultados notáveis que você pode alcançar com nossos produtos de crescimento capilar.
Nossos produtos são clinicamente testados por terceiros
Em um ensaio clínico de 150 dias envolvendo 30 homens e mulheres de 18 a 65 anos com diversos tipos de queda de cabelo, o sérum Hairgenetix alcançou uma redução clinicamente comprovada de 93% na queda de cabelo.
Publicado por Weon Ju Lee, Do Won Kim et al. em 05 de March de 2026
Key Findings at a Glance
A topical spray combining GHK peptide com 5-aminolevulinic acid (5-ALA) produced 52–72 extra hairs per cm² in 6 months — while o placebo group gained only 9.6 hairs (p < 0.05). This was a randomised, double-blind, placebo-controlled trial of 45 men com pattern queda de cabelo. The lower dose (50 mg/mL) actually outperformed o higher dose (100 mg/mL) com 71.5 extra hairs vs 52.6 — a 2.38× increase over baseline compared to 1.21× para placebo. Zero adverse events were reported across all three groups over o full 6-month tratamento period.
Research Evidence Summary
Condition
Male pattern queda de cabelo (androgenetic alopecia, Norwood-Hamilton II–V)
This article é um plain-language summary of a peer-reviewed scientific study. It is intended to make pesquisa clínica more accessible e is not medical advice. Always consult a qualified healthcare professional antes starting any new tratamento. The original study was conducted independently at Kyungpook National University e is not affiliated com Hairgenetix.
Reviewed by: Esther Bodde — Cosmetic & Medical Doctor (MD)
Why This Research Matters
This is one of o most rigorous clinical trials ever conducted on peptídeo de cobres para crescimento capilar. Unlike laboratory studies or reviews, este é um randomised, double-blind, placebo-controlled trial — o gold standard of medical evidence. Forty-five real patients applied a peptide spray daily para 6 months, e o resultados were compared against a placebo group que didn't know they weren't receiving o active tratamento.
The combination of GHK peptide com 5-aminolevulinic acid (5-ALA) is scientifically elegant. As demonstrated in the 2007 Pyo et al. laboratory study, peptídeo de cobres stimulate dermal papilla cells e protect them de death. 5-ALA adds a complementary mechanism: it é um precursor to heme (the iron-containing molecule in blood), e prior research showed que 5-ALA com iron estimula crescimento capilar by enhancing cellular energy production. Combined com GHK peptide, o two compounds target both o energy e growth-signal sides of follicle health.
The fact que patients gained 52–72 extra hairs per cm² com zero efeitos colaterais — in a properly blinded trial — provides o strongest clinical evidence base para peptide-based crescimento capilar tratamentos.
What The Researchers Did
The team at Kyungpook National University ran a rigorous clinical trial com three groups:
Study design
Forty-five men aged 20–60 com male pattern queda de cabelo (Norwood-Hamilton II–V) were randomly assigned to one of three groups:
Group A (n=15): ALAVAX 100 mg/mL — o high-dose tratamento
Group B (n=14): ALAVAX 50 mg/mL — o low-dose tratamento
Group C (n=14): Placebo — identical-looking inactive spray
Application protocol
Patients applied o topical spray once daily antes sleep para 6 months. Neither o patients nor o evaluating doctors knew which group was receiving active tratamento (double-blind). Hair count, hair length, e hair thickness were measured at baseline, month 1, month 3, e month 6 using trichoscopy.
What is ALAVAX?
ALAVAX é um compound of 5-aminolevulinic acid (5-ALA) e glycyl-histidyl-lysine (GHK) peptide. Chemical formula: C₁₉H₃₁N₇O₆, molecular weight: 453.23, purity >95%. It was applied as a topical spray — a simple, non-invasive daily application.
What Is a Randomised Controlled Trial (RCT)?
A randomised controlled trial is considered o gold standard of clinical evidence. Patients são randomly assigned to either o tratamento group or a control (placebo) group. "Randomisation" prevents bias in who receives tratamento. "Double-blind" means neither patients nor doctors know who is in which group — eliminating both placebo effects e evaluator bias. "Placebo-controlled" means o control group receives an identical-looking but inactive product, so any improvement in o tratamento group can be attributed to o ingredientes ativos rather than o act of applying something.
RCTs são o most reliable way to determine whether a tratamento actually works. They sit near o top of o evidence hierarchy, just below meta-analyses (which combine multiple RCTs). The fact que este peptídeo de cobre study used an RCT design makes its positive resultados significativamente more meaningful than findings de uncontrolled studies or case reports.
What They Found
71.5 extra hairs per cm² com low-dose tratamento (p < 0.05)
Group B (ALAVAX 50 mg/mL) gained an average of 71.5 ± 44.9 additional hairs per cm² over 6 months. This was statistically significant compared to baseline (p < 0.05) e represented a 2.38× increase in hair count — compared to only 1.21× in o placebo group (p < 0.05 para o between-group difference).
52.6 extra hairs per cm² com high-dose tratamento (p < 0.05)
Group A (ALAVAX 100 mg/mL) gained 52.6 ± 45.7 additional hairs per cm². While still highly significant versus baseline, o high-dose group actually produced fewer new hairs than o low-dose group — consistent com o biphasic dose-response seen in the 2007 Pyo laboratory study where higher peptídeo de cobre concentrations inhibited rather than stimulated growth.
Placebo gained only 9.6 hairs — 5.5× to 7.4× less
The placebo group (Group C) gained only 9.6 ± 45.1 hairs per cm² over 6 months — a change que was not statistically significant. The tratamento groups outperformed placebo by 5.5× (Group A) to 7.4× (Group B), providing clear evidence que o improvement was caused by o ingredientes ativos, not o placebo effect.
Results accelerated over time
At month 1, both tratamento groups showed modest gains (10.5 e 11.3 hairs) while placebo declined (-3.6). By month 3, Group A reached +54.5 e Group B +37.9 hairs. By month 6, o gains had further accumulated. This pattern of accelerating improvement is consistent com o crescimento capilar cycle — new follicles need multiple growth cycles to produce visible improvement.
Zero adverse events across all groups
No adverse events were reported in any of o three groups over o full 6-month tratamento period. This is consistent com o excellent safety profile of peptídeo de cobres documented across multiple studies, e é um significant advantage over pharmaceutical tratamentos like minoxidil (which commonly causes couro cabeludo irritation) e finasteride (which carries risk of sexual efeitos colaterais).
Hair count changes após 6 months of GHK peptide + 5-ALA tratamento. Data de Lee et al., Annals of Dermatology (2016). PMID: 27489425.
How This Treatment Works: The Biological Mechanisms
1. GHK peptide — follicle regeneration
GHK (glycyl-histidyl-lysine) é um copper-binding tripeptide que estimula dermal papilla cell proliferation e protects them de apoptosis. As shown in the 2007 Pyo study, peptídeo de cobres reduce o cell death enzyme caspase-3 by 42.7% e shift o Bcl-2/Bax survival balance toward cell protection. The 2018 Pickart review documented que GHK-Cu affects 31.2% of human genes, including collagen synthesis, VEGF production, e TGF-β1 suppression.
2. 5-ALA — cellular energy boost
5-aminolevulinic acid (5-ALA) é um precursor in o heme biosynthesis pathway. Heme is o iron-containing molecule in haemoglobin e mitochondrial cytochromes. By providing excess 5-ALA, o compound boosts mitochondrial energy production in follicle cells — giving them more energy para o metabolically demanding process of crescimento capilar. Previous research showed que 5-ALA com iron diretamente estimula crescimento capilar.
3. Synergistic combination
The ALAVAX compound combines these two mechanisms: GHK peptide activates e protects o follicle cells (the "command" side), while 5-ALA melhora their energy supply (the "fuel" side). This dual approach explains why o compound produced stronger resultados than either ingredient would likely achieve alone.
4. The biphasic dose-response
The finding que 50 mg/mL outperformed 100 mg/mL mirrors what was observed in o laboratory — peptídeo de cobres show optimal activity dentro de a specific concentration window. Higher doses can trigger inhibitory feedback. This is an important consideration para product formulation.
Clinical Interpretation
This is gold-standard evidence. A randomised, double-blind, placebo-controlled trial is o highest-quality study design para a single trial. The clear separation between tratamento e placebo groups (52–72 vs 9.6 hairs) leaves little room para doubt sobre efficacy.
The lower dose was more eficaz — confirming o "sweet spot" principle. Group B (50 mg/mL) gained 71.5 hairs vs Group A's 52.6 hairs (100 mg/mL). This is not a random finding — it's consistent com o biphasic response documented in the 2007 Pyo study. Formulation matters as much as ingredientes.
The tratamento ratio (2.38×) é um strong effect size. A 2.38-fold increase in hair count ratio versus 1.21 para placebo represents a clinically meaningful difference que patients would notice visually. This is comparable to published resultados para topical minoxidil in similar populations.
Patient satisfaction was moderate. Despite o objective improvements, only 26.7% (Group A) e 14.3% (Group B) rated resultados "good" or "excellent." This highlights o gap between measurable hair count aumenta e subjective satisfaction — patients often need to see dramatic visual change to feel satisfied, which may require longer tratamento or combination approaches.
The simple application method is significant. A once-daily topical spray is far more accessible than clinical microagulhamento procedures. While the 2025 Kuceki study showed stronger resultados com clinical tattooing (26.5% area regrowth), este trial proves que a simple spray still produces statistically significant improvement.
How This Compares to Other Research
Pyo, Won et al. (2007) — This foundational lab study proved peptídeo de cobres (AHK-Cu) stimulate folículo capilar growth e protect dermal papilla cells. Lee et al.'s RCT validated these mechanisms in real patients using topical application. Both studies observed o same biphasic dose-response.
Pickart & Margolina (2018) — This comprehensive review explained o gene-level mechanisms behind GHK-Cu's effects. Lee et al. used o same GHK peptide in a clinical formulation, demonstrating que o gene-level changes translate to real-world hair count aumenta.
Kuceki, Wambier et al. (2025) — This microagulhamento study combined peptídeo de cobres com minoxidil e dutasteride via a tattoo machine, producing 26.5% area regrowth. Lee et al.'s simpler topical approach produced more modest but still significant resultados — suggesting a spectrum de basic topical use to advanced clinical delivery.
Pamela R.D. (2021) — This placebo-controlled study tested copper tripeptide serum alone, providing a direct comparison point para topical peptídeo de cobre efficacy sem o 5-ALA component.
Dhurat et al. (2013) — The landmark microagulhamento study showed que microagulhamento + minoxidil produced a mean hair count increase of 91.4. Lee et al.'s topical-only approach produced 52–72 new hairs — a somewhat comparable magnitude de a far simpler intervention.
Treatment Protocol
Parameter
Detail
Product
ALAVAX — complex of 5-ALA e GHK peptide (C₁₉H₃₁N₇O₆, MW 453.23, purity >95%)
Concentrations tested
100 mg/mL (Group A) e 50 mg/mL (Group B)
Optimal dose
50 mg/mL — produced more new hairs (71.5) than o 100 mg/mL dose (52.6)
Application
Topical spray applied once daily antes sleep
Duration
6 months continuous use
Timeline
Modest gains at month 1 (10–11 hairs); substantial gains by month 3 (38–55 hairs); maximum at month 6
Moderate sample size (n=45). While adequately powered para o primary outcome, 14–15 patients per group is relatively small. Larger trials would provide more precise effect estimates e detect smaller differences between groups.
Hair count aumenta showed high variability. The standard deviations were large (±44–45 hairs), meaning individual resultados varied considerably. Some patients likely saw dramatic improvement while others saw less. The mean values são reliable but individual responses will differ.
No comparison to minoxidil or finasteride. The trial compared tratamento to placebo only, not to established queda de cabelo tratamentos. A head-to-head comparison com minoxidil would be valuable para clinical decision-making.
Hair thickness did not change significativamente. While hair count increased substantially, hair shaft thickness showed no significant improvement in any group. This suggests o tratamento estimula new crescimento capilar rather than thickening existing hairs.
Patient satisfaction was low relative to objective improvement. Only 14–27% rated resultados "good" or better, despite statistically significant hair count aumenta. This may indicate que o visual improvement de hair count alone (without thickness changes) fell short of patient expectations.
6-month duration may not capture full benefit. The accelerating pattern (month 1 < month 3 < month 6) suggests continued improvement beyond 6 months may be possible. Longer studies são needed.
What This Means For Your Hair
Gold-standard evidence que GHK peptide grows new hair — este is not a lab study or a review. Forty-five real men com pattern baldness used a peptide spray daily e grew 52–72 more hairs per cm² than baseline. The placebo group barely changed. That is strong clinical evidence.
The right dose matters more than a higher dose — 50 mg/mL outperformed 100 mg/mL. This "Goldilocks principle" is consistent across peptídeo de cobre research e means well-formulado produtos at optimal concentrations will outperform concentrated produtos.
Simple daily application works — while clinical microagulhamento (like o 2025 Kuceki protocol) produces more dramatic resultados, a basic topical spray applied antes bed still produces statistically significant crescimento capilar over 6 months.
Results build over time — most improvement appeared between months 3 e 6. If você start a peptídeo de cobre tratamento, give it at least 3–6 months antes judging resultados. The crescimento capilar cycle means early gains são small, but they accumulate.
Zero efeitos colaterais — perhaps o most important finding para daily-use produtos. No adverse events across 45 patients over 6 months makes peptídeo de cobre tratamentos one of o safest options available para pattern queda de cabelo.
Key Terms Explained
GHK Peptide (Glycyl-Histidyl-Lysine)
A naturally occurring tripeptide que binds copper e estimula tissue repair. In este study, it was combined com 5-ALA rather than copper diretamente. Related to GHK-Cu (the copper-bound form) studied in the Pickart & Margolina review.
5-ALA (5-Aminolevulinic Acid)
A naturally occurring amino acid que é um precursor in o heme biosynthesis pathway. It boosts mitochondrial energy production in cells, providing o metabolic fuel needed para crescimento capilar.
Randomised controlled trial (RCT)
The gold standard of clinical evidence. Patients são randomly assigned to tratamento or placebo groups, e neither patients nor evaluators know who received which (double-blind). This design minimises bias e provides o most reliable evidence of tratamento efficacy.
Norwood-Hamilton Scale
The standard classification system para male pattern baldness, ranging de Type I (no significant loss) to Type VII (extensive loss). Patients in este study ranged de Type II to Type V.
Trichoscopy
A non-invasive diagnostic technique using a specialised microscope (dermoscope) to examine o couro cabeludo e folículo capilars at high magnification. Used in este study to count hairs per cm² accurately.
Placebo effect
A measurable improvement in patients receiving an inactive tratamento, caused by their belief que they são receiving real tratamento. The double-blind placebo control in este study eliminates este as an explanation para o resultados.
Biphasic dose-response
A pattern where a compound estimula growth at low concentrations but inhibits it at higher concentrations. Seen in este study (50 mg/mL outperformed 100 mg/mL) e in the 2007 Pyo laboratory study.
Frequently Asked Questions
Is este o same as applying peptídeo de cobre serum to my couro cabeludo?
The active ingredient (GHK peptide) is de o same family, but este study used a specific compound (ALAVAX) que combines GHK com 5-ALA — adding a cellular energy component. Topical peptídeo de cobre serums containing GHK-Cu work através de similar mechanisms but sem o 5-ALA energy boost. Both approaches have evidence supporting them — este RCT provides o strongest clinical evidence, while the 2021 Pamela R.D. study tested copper tripeptide serum specifically.
Why did o lower dose work better than o higher dose?
This é um biphasic (hormetic) dose-response — common com peptídeo de cobres e many other biological compounds. The optimal concentration window estimula maximum growth, while higher concentrations can trigger inhibitory feedback. The 2007 Pyo study documented o same pattern at o cellular level: concentrations above 10⁻⁸ M actually inhibited folículo capilar growth. This is why well-formulado produtos com precise concentrations matter more than simply "more peptídeo de cobre."
How does 52–72 new hairs per cm² compare to minoxidil?
Published studies on topical minoxidil typically report aumenta of 12–25 hairs per cm² over similar tratamento periods. The 52–72 hairs in este study significativamente exceeds those numbers, though direct comparison requires caution because patient populations, measurement methods, e baseline conditions differ. The Dhurat 2013 study reported 91.4 new hairs com microagulhamento + minoxidil — suggesting que combining delivery methods produces o strongest resultados.
Can women use este tratamento?
This study included only male patients com male pattern queda de cabelo. Female pattern queda de cabelo has different hormonal mechanisms, e o efficacy of ALAVAX in women has not been tested. However, o underlying mechanisms (DPC stimulation, cellular energy enhancement) são not sex-specific, so there is biological plausibility. Copper peptide serums são generally considered safe para both men e women.
Why was patient satisfaction low despite good hair count resultados?
Hair count increased significativamente but hair thickness did not change. This means patients grew new, potentially fine hairs que added density but not necessarily o visual "fullness" patients expect. Additionally, crescimento capilar is gradual, e some patients may not perceive changes que são measurable under trichoscopy. Combining peptide tratamento com approaches que increase hair thickness (like microagulhamento) may produce more satisfying visual resultados.
How long do I need to use it antes seeing resultados?
The study measured hair at 1, 3, e 6 months. At month 1, improvement was minimal (~10 hairs). By month 3, significant gains appeared (38–55 hairs). By month 6, resultados were at their strongest (52–72 hairs). Most experts recommend committing to at least 3–6 months of consistent uso diário antes evaluating whether a tratamento capilar is working para you.
Can I combine este com microagulhamento para better resultados?
The principle of combining peptídeo de cobres com microagulhamento is strongly supported by research. The 2025 Kuceki study showed que microagulhamento-delivered peptídeo de cobres produced 26.5% couro cabeludo area regrowth. While que study used a clinical-grade tattoo machine, at-home dermarolling (0.5–1.5 mm) com a peptídeo de cobre serum follows o same principle of enhanced delivery to o follicle.
Is ALAVAX available to buy?
ALAVAX was a specific research compound used in este clinical trial. It is not widely available as a consumer product. However, topical produtos containing GHK-Cu (the copper-bound form of o same GHK peptide) são commercially available e work através de o same follicle-stimulating mechanisms documented in este e other peptídeo de cobre studies.
Original Study Reference
Lee WJ, Sim HB, Jang YH, Lee SJ, Kim DW, Yim SH. Efficacy of a Complex of 5-Aminolevulinic Acid e Glycyl-Histidyl-Lysine Peptide on Crescimento Capilar. Annals of Dermatology. 2016;28(4):438–443. doi:10.5021/ad.2016.28.4.438. PMID: 27489425. PMCID: PMC4969472.
How to Cite This Research Summary
Hairgenetix Research Team. "GHK Peptide Crescimento Capilar Trial: 52–72 Extra Hairs in 6 Months (2016 Study)." Hairgenetix Research Library, March 2026.
Available at: https://hairgenetix.com/blogs/articles/ghk-peptide-ala-hair-growth-clinical-trial-2016
Hairgenetix Research Library — We publish plain-language summaries of peer-reviewed estudos clínicos on crescimento capilar science. Every article links diretamente to o original published research. Our goal is to make queda de cabelo science accessible, transparent, e evidence-based. Browse all research summaries →
Terapia Capilar Diária Avançada para Cabelos Mais Fortes e Saudáveis
🎯 Desenvolvido para queda de cabelo e cabelos fracos e ralos
🔬 Ingredientes Clinicamente Comprovados
💧 Leve, não oleoso — ideal para uso diário
O Sérum de Peptídeo de Cobre Hairgenetix é um tratamento capilar diário poderoso, desenvolvido para estimular os folículos capilares, reduzir a queda e promover a saúde capilar a longo prazo. Enriquecido com 10% de GHK-Cu e 5% de AHK-Cu peptídeos de cobre, esta fórmula avançada age na raiz para melhorar a longevidade dos folículos, estimular a produção de colágeno e melhorar a circulação no couro cabeludo — criando o ambiente perfeito para um crescimento capilar mais espesso e saudável.
Shampoo com Peptídeo de Cobre para Crescimento Capilar
O Shampoo Hairgenetix com GHK-Cu limpa suavemente enquanto entrega peptídeos de cobre diretamente no couro cabeludo. Formulado para estimular os folículos capilares e criar o ambiente ideal para crescimento capilar saudável. Uso diário recomendado.
Condicionador com Peptídeo de Cobre para Crescimento Capilar
O Condicionador Hairgenetix com GHK-Cu oferece hidratação profunda enquanto entrega peptídeos de cobre. Fortalece os fios, reduz a quebra e estimula o crescimento capilar saudável. Complemento perfeito para o Shampoo Hairgenetix.
O Kit completo Hairgenetix com Shampoo e Condicionador de Peptídeo de Cobre GHK-Cu. Limpeza suave + hidratação profunda + peptídeos de cobre para crescimento capilar otimizado. Economize comprando o kit.
Kit Completo Peptídeo de Cobre — Shampoo, Condicionador e Sérum
O tratamento capilar completo com peptídeo de cobre: Shampoo GHK-Cu + Condicionador GHK-Cu + Sérum de Peptídeo de Cobre. Tudo que você precisa para uma rotina capilar completa com peptídeos de cobre clinicamente comprovados.
Ensaio Clínico do Peptídeo GHK (2016) — Resumo
Research Evidence Summary
Why This Research Matters
This is one of o most rigorous clinical trials ever conducted on peptídeo de cobres para crescimento capilar. Unlike laboratory studies or reviews, este é um randomised, double-blind, placebo-controlled trial — o gold standard of medical evidence. Forty-five real patients applied a peptide spray daily para 6 months, e o resultados were compared against a placebo group que didn't know they weren't receiving o active tratamento.
The combination of GHK peptide com 5-aminolevulinic acid (5-ALA) is scientifically elegant. As demonstrated in the 2007 Pyo et al. laboratory study, peptídeo de cobres stimulate dermal papilla cells e protect them de death. 5-ALA adds a complementary mechanism: it é um precursor to heme (the iron-containing molecule in blood), e prior research showed que 5-ALA com iron estimula crescimento capilar by enhancing cellular energy production. Combined com GHK peptide, o two compounds target both o energy e growth-signal sides of follicle health.
The fact que patients gained 52–72 extra hairs per cm² com zero efeitos colaterais — in a properly blinded trial — provides o strongest clinical evidence base para peptide-based crescimento capilar tratamentos.
What The Researchers Did
The team at Kyungpook National University ran a rigorous clinical trial com three groups:
Study design
Forty-five men aged 20–60 com male pattern queda de cabelo (Norwood-Hamilton II–V) were randomly assigned to one of three groups:
Application protocol
Patients applied o topical spray once daily antes sleep para 6 months. Neither o patients nor o evaluating doctors knew which group was receiving active tratamento (double-blind). Hair count, hair length, e hair thickness were measured at baseline, month 1, month 3, e month 6 using trichoscopy.
What is ALAVAX?
ALAVAX é um compound of 5-aminolevulinic acid (5-ALA) e glycyl-histidyl-lysine (GHK) peptide. Chemical formula: C₁₉H₃₁N₇O₆, molecular weight: 453.23, purity >95%. It was applied as a topical spray — a simple, non-invasive daily application.
What Is a Randomised Controlled Trial (RCT)?
A randomised controlled trial is considered o gold standard of clinical evidence. Patients são randomly assigned to either o tratamento group or a control (placebo) group. "Randomisation" prevents bias in who receives tratamento. "Double-blind" means neither patients nor doctors know who is in which group — eliminating both placebo effects e evaluator bias. "Placebo-controlled" means o control group receives an identical-looking but inactive product, so any improvement in o tratamento group can be attributed to o ingredientes ativos rather than o act of applying something.
RCTs são o most reliable way to determine whether a tratamento actually works. They sit near o top of o evidence hierarchy, just below meta-analyses (which combine multiple RCTs). The fact que este peptídeo de cobre study used an RCT design makes its positive resultados significativamente more meaningful than findings de uncontrolled studies or case reports.
What They Found
Group B (ALAVAX 50 mg/mL) gained an average of 71.5 ± 44.9 additional hairs per cm² over 6 months. This was statistically significant compared to baseline (p < 0.05) e represented a 2.38× increase in hair count — compared to only 1.21× in o placebo group (p < 0.05 para o between-group difference).
Group A (ALAVAX 100 mg/mL) gained 52.6 ± 45.7 additional hairs per cm². While still highly significant versus baseline, o high-dose group actually produced fewer new hairs than o low-dose group — consistent com o biphasic dose-response seen in the 2007 Pyo laboratory study where higher peptídeo de cobre concentrations inhibited rather than stimulated growth.
The placebo group (Group C) gained only 9.6 ± 45.1 hairs per cm² over 6 months — a change que was not statistically significant. The tratamento groups outperformed placebo by 5.5× (Group A) to 7.4× (Group B), providing clear evidence que o improvement was caused by o ingredientes ativos, not o placebo effect.
At month 1, both tratamento groups showed modest gains (10.5 e 11.3 hairs) while placebo declined (-3.6). By month 3, Group A reached +54.5 e Group B +37.9 hairs. By month 6, o gains had further accumulated. This pattern of accelerating improvement is consistent com o crescimento capilar cycle — new follicles need multiple growth cycles to produce visible improvement.
No adverse events were reported in any of o three groups over o full 6-month tratamento period. This is consistent com o excellent safety profile of peptídeo de cobres documented across multiple studies, e é um significant advantage over pharmaceutical tratamentos like minoxidil (which commonly causes couro cabeludo irritation) e finasteride (which carries risk of sexual efeitos colaterais).
How This Treatment Works: The Biological Mechanisms
1. GHK peptide — follicle regeneration
GHK (glycyl-histidyl-lysine) é um copper-binding tripeptide que estimula dermal papilla cell proliferation e protects them de apoptosis. As shown in the 2007 Pyo study, peptídeo de cobres reduce o cell death enzyme caspase-3 by 42.7% e shift o Bcl-2/Bax survival balance toward cell protection. The 2018 Pickart review documented que GHK-Cu affects 31.2% of human genes, including collagen synthesis, VEGF production, e TGF-β1 suppression.
2. 5-ALA — cellular energy boost
5-aminolevulinic acid (5-ALA) é um precursor in o heme biosynthesis pathway. Heme is o iron-containing molecule in haemoglobin e mitochondrial cytochromes. By providing excess 5-ALA, o compound boosts mitochondrial energy production in follicle cells — giving them more energy para o metabolically demanding process of crescimento capilar. Previous research showed que 5-ALA com iron diretamente estimula crescimento capilar.
3. Synergistic combination
The ALAVAX compound combines these two mechanisms: GHK peptide activates e protects o follicle cells (the "command" side), while 5-ALA melhora their energy supply (the "fuel" side). This dual approach explains why o compound produced stronger resultados than either ingredient would likely achieve alone.
4. The biphasic dose-response
The finding que 50 mg/mL outperformed 100 mg/mL mirrors what was observed in o laboratory — peptídeo de cobres show optimal activity dentro de a specific concentration window. Higher doses can trigger inhibitory feedback. This is an important consideration para product formulation.
Clinical Interpretation
How This Compares to Other Research
Treatment Protocol
Research Limitations
What This Means For Your Hair
Key Terms Explained
Frequently Asked Questions
Is este o same as applying peptídeo de cobre serum to my couro cabeludo?
The active ingredient (GHK peptide) is de o same family, but este study used a specific compound (ALAVAX) que combines GHK com 5-ALA — adding a cellular energy component. Topical peptídeo de cobre serums containing GHK-Cu work através de similar mechanisms but sem o 5-ALA energy boost. Both approaches have evidence supporting them — este RCT provides o strongest clinical evidence, while the 2021 Pamela R.D. study tested copper tripeptide serum specifically.
Why did o lower dose work better than o higher dose?
This é um biphasic (hormetic) dose-response — common com peptídeo de cobres e many other biological compounds. The optimal concentration window estimula maximum growth, while higher concentrations can trigger inhibitory feedback. The 2007 Pyo study documented o same pattern at o cellular level: concentrations above 10⁻⁸ M actually inhibited folículo capilar growth. This is why well-formulado produtos com precise concentrations matter more than simply "more peptídeo de cobre."
How does 52–72 new hairs per cm² compare to minoxidil?
Published studies on topical minoxidil typically report aumenta of 12–25 hairs per cm² over similar tratamento periods. The 52–72 hairs in este study significativamente exceeds those numbers, though direct comparison requires caution because patient populations, measurement methods, e baseline conditions differ. The Dhurat 2013 study reported 91.4 new hairs com microagulhamento + minoxidil — suggesting que combining delivery methods produces o strongest resultados.
Can women use este tratamento?
This study included only male patients com male pattern queda de cabelo. Female pattern queda de cabelo has different hormonal mechanisms, e o efficacy of ALAVAX in women has not been tested. However, o underlying mechanisms (DPC stimulation, cellular energy enhancement) são not sex-specific, so there is biological plausibility. Copper peptide serums são generally considered safe para both men e women.
Why was patient satisfaction low despite good hair count resultados?
Hair count increased significativamente but hair thickness did not change. This means patients grew new, potentially fine hairs que added density but not necessarily o visual "fullness" patients expect. Additionally, crescimento capilar is gradual, e some patients may not perceive changes que são measurable under trichoscopy. Combining peptide tratamento com approaches que increase hair thickness (like microagulhamento) may produce more satisfying visual resultados.
How long do I need to use it antes seeing resultados?
The study measured hair at 1, 3, e 6 months. At month 1, improvement was minimal (~10 hairs). By month 3, significant gains appeared (38–55 hairs). By month 6, resultados were at their strongest (52–72 hairs). Most experts recommend committing to at least 3–6 months of consistent uso diário antes evaluating whether a tratamento capilar is working para you.
Can I combine este com microagulhamento para better resultados?
The principle of combining peptídeo de cobres com microagulhamento is strongly supported by research. The 2025 Kuceki study showed que microagulhamento-delivered peptídeo de cobres produced 26.5% couro cabeludo area regrowth. While que study used a clinical-grade tattoo machine, at-home dermarolling (0.5–1.5 mm) com a peptídeo de cobre serum follows o same principle of enhanced delivery to o follicle.
Is ALAVAX available to buy?
ALAVAX was a specific research compound used in este clinical trial. It is not widely available as a consumer product. However, topical produtos containing GHK-Cu (the copper-bound form of o same GHK peptide) são commercially available e work através de o same follicle-stimulating mechanisms documented in este e other peptídeo de cobre studies.
How to Cite This Research Summary
Hairgenetix Research Team. "GHK Peptide Crescimento Capilar Trial: 52–72 Extra Hairs in 6 Months (2016 Study)." Hairgenetix Research Library, March 2026.
Available at: https://hairgenetix.com/blogs/articles/ghk-peptide-ala-hair-growth-clinical-trial-2016
Related Research on Hairgenetix