Best Peptides for Hair Growth

Hair growth peptides work by improving scalp blood flow, stimulating follicular stem cells, and providing growth factors that extend the anagen (growth) phase. Copper peptides like GHK-Cu have the strongest published evidence.

Reviewed by Dr. Sarah Mitchell, PharmD, BCPS

Lead Researcher · Updated 2026

Showing 1 peptides ranked by popularity and research evidence

GHK-Cu

ResearchAnti-Aging

A naturally occurring copper-binding tripeptide that modulates over 4,000 human genes. The gold standard in dermal remodeling, wound healing, and systemic anti-aging research.

Half-life: ~1–2 hoursDose: 1–2 mg daily

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