Best peptides for skin repair
Peptides that support wound healing, skin barrier repair, and tissue regeneration.
Peptides that promote skin repair work through several pathways — stimulating collagen synthesis, promoting angiogenesis (new blood vessel formation), attracting immune cells to repair sites, and reducing inflammation. Here are the most researched options.
One of the most researched peptides in cosmetic science. Naturally occurring in human plasma, GHK-Cu declines with age and is involved in wound healing, collagen synthesis, and potentially hair growth.
What evidence supports
- ✓promotes wound healing and tissue repair in multiple studies
- ✓stimulates collagen and glycosaminoglycan synthesis
- ✓may support hair follicle health and growth in some studies
Key concern: can cause a purging-like skin response initially
The most mainstream peptide supplement. Collagen broken down into small, absorbable peptides for oral use. Widely studied for skin, joint, and general connective tissue support.
What evidence supports
- ✓multiple randomized controlled trials show modest improvement in skin elasticity and hydration at 2.5–10g/day over 8+ weeks
- ✓some evidence supports improved joint comfort with consistent supplementation
- ✓bioavailability of hydrolyzed form is significantly better than whole collagen protein
Key concern: results are modest and gradual, not dramatic or immediate
Available in
A naturally occurring antimicrobial peptide produced by the human immune system. Part of the cathelicidin family, LL-37 plays a role in innate immune defense against bacteria, viruses, and fungi. Being explored for immune support and wound healing.
What evidence supports
- ✓broad-spectrum antimicrobial activity against gram-positive and gram-negative bacteria in vitro
- ✓disrupts bacterial biofilms in laboratory settings
- ✓promotes wound healing via angiogenesis and keratinocyte migration in cell studies
Key concern: no FDA-approved therapeutic applications
A naturally occurring tripeptide found in human plasma, saliva, and urine. Concentrations decline significantly with age. GHK is the foundation peptide that, when bound to copper, forms the more well-known GHK-Cu. On its own, GHK has wound healing and gene expression modulation properties.
What evidence supports
- ✓gene expression studies show GHK can upregulate genes associated with tissue repair and downregulate inflammatory genes
- ✓stimulates collagen I and III synthesis in fibroblast cultures
- ✓promotes wound healing in animal models
Key concern: most research is on GHK-Cu (copper-bound form) rather than free GHK alone
A collagen-boosting signal peptide most often paired with Palmitoyl Tetrapeptide-7 to form the Matrixyl 3000 complex. Popular in anti-aging formulations aimed at mature or sensitive skin.
What evidence supports
- ✓in vitro studies show stimulation of collagen I and III production in fibroblasts
- ✓modest wrinkle reduction observed in in vivo studies over several weeks
- ✓generally well-tolerated including in sensitive skin
Key concern: typically well-tolerated with minimal irritation risk
Available in
Body Protection Compound-157 is popular in biohacking communities for gut healing and injury recovery. Not FDA approved and most evidence comes from animal studies.
What evidence supports
- ✓animal studies show promising results for gut mucosal healing
- ✓rodent models demonstrate tendon and ligament repair benefits
- ✓human clinical trial data is very limited and preliminary
Key concern: not FDA approved for any indication
Available in
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The information on this site is for educational and informational purposes only. It is not intended as medical advice and should not be used to diagnose, treat, or prevent any condition. Always consult with a qualified healthcare professional before starting any new supplement, peptide, or treatment protocol.