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Peptide Database

Goals
Fat LossMuscle BuildingInjury HealingAnti-AgingCognitive EnhancementSleep OptimizationImmune SupportGut HealingSkin RejuvenationSexual Health
Peptides
5-Amino-1MQ
Weight Management
Abarelix
Hormone Support
Acetyl Hexapeptide-3 (Argireline)
Cosmetic
Adipotide
Weight Management
Adrenomedullin
Healing & Recovery
Alexamorelin
Growth Hormone
Angiotensin (1-7)
Healing & Recovery
AOD-9604
Weight Management
Apelin-13
Healing & Recovery
ARA-290 (Cibinetide)
Healing & Recovery
Bestatin (Ubenimex)
Immune
BPC-157
Healing & Recovery
Buserelin
Hormone Support
Cagrilintide
Weight Management
CagriSema
Weight Management
Capromorelin
Growth Hormone
Cartalax
Anti-Aging
Cathelicidin (hCAP-18 / Synthetic Derivatives)
Immune
Cerebrolysin
Cognitive
Cerluten
Cognitive
Cetrorelix
Hormone Support
Chonluten
Immune
CJC-1295 (No DAC)
Growth Hormone
CJC-1295 with DAC
Growth Hormone
Cortexin
Cognitive
Crystagen
Immune
Daptomycin
Immune
Defensin (HBD-2)
Immune
Defensin (HBD-3)
Immune
Degarelix
Hormone Support
Dihexa
Cognitive
DSIP (Delta Sleep-Inducing Peptide)
Sleep & Recovery
Dulaglutide
Weight Management
Enalapril
Healing & Recovery
Epithalon
Anti-Aging
Exenatide
Weight Management
Fertirelin
Hormone Support
FOXO4-DRI
Anti-Aging
Ganirelix
Hormone Support
GHK-Cu (Copper Peptide)
Cosmetic
GHRH (1-29)
Growth Hormone
GHRP-2
Growth Hormone
GHRP-6 (Growth Hormone Releasing Peptide-6)
Growth Hormone
Glutathione
Anti-Aging
Gonadorelin (GnRH)
Hormone Support
Gramicidin
Immune
Hexarelin
Growth Hormone
Human Chorionic Gonadotropin (HCG)
Hormone Support
Human Growth Hormone (HGH)
Growth Hormone
IGF-1 LR3
Growth Hormone
Immunoxel (Dzherelo)
Immune
Imunofan
Immune
Intermedin (Adrenomedullin-2)
Healing & Recovery
Ipamorelin
Growth Hormone
Kisspeptin-10
Sexual Health
KPV (Alpha-MSH Fragment)
Healing & Recovery
Lactoferricin B
Immune
Larazotide
Healing & Recovery
Lentinan
Immune
Leuphasyl
Cosmetic
Leuprolide
Hormone Support
Liraglutide
Weight Management
Livagen
Anti-Aging
Lixisenatide
Weight Management
LL-37
Immune
Macimorelin
Growth Hormone
Magainin-2
Immune
Mazdutide
Weight Management
Melanotan-2
Cosmetic
MK-677 (Ibutamoren)
Growth Hormone
MOTS-c
Metabolic
Myristoyl Pentapeptide-17
Cosmetic
N-Acetyl Selank
Cognitive
N-Acetyl Semax Amidate
Cognitive
NAD+
Mitochondrial
Nafarelin
Hormone Support
Natriuretic Peptide (ANP)
Healing & Recovery
Nesiritide (BNP)
Healing & Recovery
Nisin
Immune
Noopept (Omberacetam)
Cognitive
Orforglipron
Weight Management
Ovagen
Anti-Aging
Oxytocin Acetate
Hormone Support
P21 (P021)
Cognitive
PACAP-38
Healing & Recovery
Palmitoyl Oligopeptide
Cosmetic
Palmitoyl Pentapeptide-4 (Matrixyl)
Cosmetic
Palmitoyl Tetrapeptide-7
Cosmetic
Palmitoyl Tripeptide-1
Cosmetic
Pancragen
Metabolic
PEG-MGF
Healing & Recovery
Pemvidutide
Weight Management
Pentadecapeptide (BPC Analog)
Healing & Recovery
Pidotimod
Immune
Pinealon
Cognitive
PNC-27
Immune
Polymyxin B
Immune
Pralmorelin (GHRP-2)
Growth Hormone
Pramlintide
Weight Management
Prostamax
Hormone Support
PT-141 (Bremelanotide)
Sexual Health
Relaxin-2 (Serelaxin)
Healing & Recovery
Retatrutide
Weight Management
Selank
Cognitive
Semaglutide
Weight Management
Semax
Cognitive
Sermorelin
Growth Hormone
Setmelanotide
Weight Management
SLU-PP-332
Metabolic
SM-130686
Growth Hormone
Snap-8
Cosmetic
SS-31 (Elamipretide)
Mitochondrial
Substance P Antagonists
Healing & Recovery
Survodutide
Weight Management
SYN-AKE
Cosmetic
Tabimorelin
Growth Hormone
TB-500
Healing & Recovery
Tesamorelin
Growth Hormone
Testagen
Hormone Support
Thymalin
Immune
Thymopentin (TP-5)
Immune
Thymopoietin
Immune
Thymosin Alpha-1
Immune
Thymosin Beta-4
Healing & Recovery
Thymulin (FTS)
Immune
Thymulin Analog (PAT)
Healing & Recovery
Tirzepatide
Weight Management
Tripeptide-29
Cosmetic
Triptorelin
Hormone Support
Ularitide
Healing & Recovery
Urocortin
Healing & Recovery
Ventfort
Anti-Aging
Vesilute
Hormone Support
Vilon
Immune
VIP (Vasoactive Intestinal Peptide)
Healing & Recovery
Xenin-25
Metabolic
Ziconotide (Prialt)
Healing & Recovery
Total Peptides: 137
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Condition Spotlight

Hair Loss
Restoration

Losing your hair isn't just a cosmetic issue - it affects your confidence, identity, and psychological wellbeing. Affecting 50% of men by age 50 and significant percentages of women, hair loss is one of the most emotionally impactful conditions we face.

Written by Michael Carroll — Owner, Director of Research · Reviewed by the Peptide Initiative Research Team · Editorial standards

The Problem

Your Hair Follicles Are Starving
Not Getting the Signals They Need to Grow

Progressive Thinning

Hair density decreases, hairline recedes

Follicle Miniaturization

Hairs become thinner and shorter before shedding

Psychological Distress

Impact on self-esteem and quality of life

Understanding Hair Follicle Biology

Why Hair Follicles Stop Growing

Hair loss, particularly androgenetic alopecia (male and female pattern baldness), involves multiple biological failures happening simultaneously. Your hair follicles exist in a delicate ecosystem that requires constant signaling, growth factor support, and blood supply to thrive. In androgenetic alopecia, several things go wrong at once. First, DHT sensitivity causes genetically predisposed follicles to shrink - a process called miniaturization. The hair gets thinner and shorter with each growth cycle. Second, growth factor deficiency means the follicles aren't getting the molecular signals they need to stay active. Third, inflammation and oxidative stress damage the hair follicle stem cells that are supposed to regenerate new hair.

"Your hair follicles are receiving fewer growth signals and more damage signals."

Peptide therapy addresses this from multiple angles - some provide direct growth factor signaling, others reduce inflammation, some stimulate new blood vessel formation, and others enhance the follicle's own repair mechanisms. Different peptides attack the problem in different ways.

The Solutions

5 Peptides
5 Angles of Attack

1997

GHK-Cu

The Growth Signal Amplifier

A naturally occurring copper-binding peptide discovered in human plasma that stimulates tissue remodeling, growth factor production, and hair follicle regeneration.

Role

Broadcasting growth signals to sleeping follicles

1981

Thymosin Beta-4

The Hair Growth Initiator

A naturally occurring peptide that regulates cell migration, differentiation, and proliferation - essentially telling hair follicle cells what to do and when.

Role

Conductor orchestrating the hair growth symphony

2010s

PTD-DBM (Peptide Targeting Wnt Pathway)

The Follicle Wake-Up Call

A cell-penetrating peptide that modulates the Wnt/β-catenin signaling pathway, a fundamental developmental pathway that controls hair follicle cycling and growth.

Role

Restarting the developmental program that makes hair grow

Learn more

1957

IGF-1 / IGF-1 LR3

The Nutrient Amplifier

A potent growth factor naturally produced in the body that's responsible for cell growth, proliferation, and differentiation - especially important for follicle health.

Role

Super-charging nutrient delivery to follicle bulbs

Learn more

1980s-1990s

Growth Factor Peptides (FGF, VEGF, TGF-β analogs)

The Regeneration Squad

A family of peptides that mimic or enhance fibroblast growth factor, vascular endothelial growth factor, and transforming growth factor signaling - the fundamental growth factors needed for tissue regeneration.

Role

Multiple repair crews working on different parts of the follicle

Learn more

The Strategy

How They Work Together
Together

PeptidePrimary RoleAnalogy
GHK-Cu

The Growth Signal Amplifier

Broadcasting growth signals to sleeping follicles

Thymosin Beta-4

The Hair Growth Initiator

Conductor orchestrating the hair growth symphony

PTD-DBM (Peptide Targeting Wnt Pathway)

The Follicle Wake-Up Call

Restarting the developmental program that makes hair grow

IGF-1 / IGF-1 LR3

The Nutrient Amplifier

Super-charging nutrient delivery to follicle bulbs

Growth Factor Peptides (FGF, VEGF, TGF-β analogs)

The Regeneration Squad

Multiple repair crews working on different parts of the follicle

5 Angles of Attack

Growth Factor Amplification

GHK-Cu and growth factor peptides increase the signals follicles need to grow

Follicle Cell Activation

Thymosin Beta-4 and PTD-DBM directly stimulate follicle cells and restart developmental pathways

Nutritional Support

IGF-1 and VEGF peptides improve blood flow and nutrient delivery to follicles

Protective Effects

Multiple peptides reduce inflammation and protect stem cell populations from further damage

Important Considerations

Reality Check
What to Keep in Mind

Not a Guaranteed Cure

Peptides work for many people but not everyone. Response varies based on genetics, age, degree of miniaturization, and other factors. Some see dramatic improvements, others see modest gains.

Research is Evolving

While promising, many peptide applications for hair loss are still in preclinical or early clinical research. Individual results vary significantly.

Professional Guidance

Work with a healthcare provider experienced in peptide therapy. Proper dosing, application method, and monitoring significantly affect outcomes.

Results Take Time

Hair growth is slow. Expect 3-6 months minimum to see results, 6-12 months for significant improvement. Quick fixes don't exist in hair restoration.

This information is for educational purposes only and should not be considered medical advice. Always consult with a qualified healthcare provider before starting any new treatment.

Realistic Expectations

What to Expect: A Realistic Timeline

An honest breakdown based on research and clinical reports.

Administration Guide

Dosing Protocols & Timing

General guidelines based on research literature and clinical reports. Work with a healthcare provider experienced in peptide therapy to customize for your situation.

Important: These are general guidelines. Don't self-prescribe based on internet articles. Work with a qualified healthcare provider.

GHK-Cu

0.5-3 mg per application

Common Protocols

  • Topical spray: 0.5-1 mg per application, applied twice daily to scalp
  • Topical solution: 2-3 mg/mL concentration, apply to affected areas 1-2 times daily
  • Subcutaneous injection: 1-2 mg twice weekly for systemic effects
  • Microneedling + topical: Use alongside microneedling (0.5-1.5mm) to enhance penetration

Timing Considerations

  • Topical applications work best on clean, dry scalp
  • Apply before bed to allow absorption overnight
  • Can be combined with minoxidil (no interference)
  • Systemic injections best given in morning or evening consistently

Cycling

Can be used continuously as a topical treatment; some protocols use 12 weeks on, 4 weeks off for injected forms

Beyond Peptides

Lifestyle Strategies for Living Well

Peptides work best as part of a comprehensive approach. Click each category to explore evidence-based strategies.

At a Glance

Quick Reference Card

Peptide Overview

PeptideWhat It DoesTypical DoseTiming
GHK-Cu
The Growth Signal Amplifier0.5-3 mg per applicationTopical applications work best on clean, dry scalp
Thymosin Beta-4
The Hair Growth Initiator2-5 mg per weekConsistency matters more than specific time of day
PTD-DBM (Peptide Targeting Wnt Pathway)
The Follicle Wake-Up Call1-3 mg per injectionMorning administration is commonly recommended
IGF-1 / IGF-1 LR3
The Nutrient Amplifier50-200 mcg per applicationBest applied to clean, dry scalp
Growth Factor Peptides (FGF, VEGF, TGF-β analogs)
The Regeneration Squad1-5 mg per injection or applicationTopical applications work best on clean scalp

Early Wins to Watch

  • Thicker hair texture
  • Reduced shedding
  • Healthier scalp appearance
  • New fine hairs emerging (vellus hairs)

Support Stack

BiotinIron (if deficient)ZincVitamin DB vitaminsSeleniumInositol (for PCOS-related loss)

Lifestyle Priorities

  • Adequate protein intake
  • Iron and zinc sufficiency
  • Scalp health and microneedling
  • Stress management
  • Sleep optimization
  • Gentle hair care

Hair loss is deeply personal and affects far more than appearance - it touches identity and confidence. These peptides represent a real opportunity to address underlying biological failures and restart growth. Recovery isn't guaranteed, but many people experience meaningful improvement. Consistency with treatment, patience with timelines, and attention to supporting factors all matter significantly.

Keep your expectations realistic, but don't lose hope. Hair follicles are remarkably capable of recovery when given the right biological signals and support.