Ingredient or product comparison
Peptides for Anti-Aging: Comparison Table
Before selecting a peptide, understand what each compound targets and what evidence supports its use. GHK-Cu Activates TGF-β, inhibits MMP-1, promotes collagen synthesis Dermal (topical or injectable) High. Multiple RCTs show 15–20% collagen density increase a
This source-based comparison does not add ratings or recommend a winner.
- Before selecting a peptide, understand what each compound targets and what evidence supports its use.
- GHK-Cu
- Activates TGF-β, inhibits MMP-1, promotes collagen synthesis
- Dermal (topical or injectable)
- High. Multiple RCTs show 15–20% collagen density increase at 12 weeks
- 1–3% topical concentration or 1–2mg subcutaneous 3×/week
- Most robust evidence for dermal anti-aging; well-tolerated; minimal systemic effects
- Thymosin Beta-4
- Upregulates VEGF, modulates actin polymerization, reduces inflammatory cytokines
- Systemic (injectable)
- Moderate. Wound healing proven; anti-aging effects extrapolated from inflammation reduction
- 2–5mg subcutaneous 2×/week
- Strong for recovery and barrier repair; limited direct aging biomarker data
- Epitalon
- Activates telomerase (TERT), extends telomere length in vitro
- Preliminary. Human trials limited to non-FDA jurisdictions; mechanism well-established in cell models
- 5–10mg subcutaneous daily for 10–20 days, cycled
- Intriguing cellular biology; human longevity claims outpace current evidence
- Matrixyl (Pal-KTTKS)
- Stimulates collagen I, III, IV production via TGF-β pathway
- Dermal (topical only)
- Moderate. Cosmetic trials show 15–25% wrinkle depth reduction at 8 weeks with 3% formulations
- 3–5% topical concentration applied daily
- Effective for surface-level improvement; requires consistent use; less potent than GHK-Cu
- BPC-157
- Promotes angiogenesis, modulates growth hormone receptors, accelerates tissue repair
- Low for aging-specific outcomes. Strong for injury recovery; anti-aging effects are secondary
- 250–500mcg subcutaneous daily
- Best for acute repair rather than chronic aging prevention