Hair loss (androgenetic alopecia, telogen effluvium, alopecia areata) results from DHT-driven miniaturization of follicles, impaired scalp vascular supply, inflammatory follicle destruction, and reduced growth factor signaling in the hair follicle bulge. Peptide research addresses each driver: angiogenesis promotion, IGF-1 driven follicle growth, copper-mediated matrix support, and anti-inflammatory effects.
1. GHK-Cu — Follicle Vascular Support / Keratin Stimulation
GHK-Cu directly stimulates hair follicle keratinocyte proliferation, enhances scalp angiogenesis providing follicle blood supply, and activates the follicle dermal papilla cells responsible for hair growth cycling. Topically applied copper peptides are among the most evidence-backed topical hair loss interventions available.
Dosing Protocol: Topical: 0.5–2% GHK-Cu serum applied to scalp daily, massaged in for 2–3 minutes. Systemic: 1–2 mg SubQ daily for combined systemic/local effects. Minimum 12 weeks for visible results.
2. IGF-1 LR3 — Follicle Anagen Promotion
IGF-1 is the primary growth factor determining the anagen (growth) phase length of hair follicles. Low IGF-1 correlates directly with telogen effluvium and miniaturization. IGF-1 LR3 extends the anagen phase, promotes follicle stem cell activity in the bulge region, and directly counteracts the catagen-inducing effects of DHT.
Dosing Protocol: 20–40 mcg SubQ daily (local scalp injection or systemic). Cycle: 4 weeks on, 4–6 weeks off.
3. BPC-157 — Scalp Vascularity / Anti-Inflammatory
Poor scalp blood supply and follicle inflammation are underappreciated drivers of hair loss. BPC-157 promotes angiogenesis and capillary density in scalp tissue while reducing the inflammatory infiltrate around follicles that characterizes alopecia areata and chronic telogen effluvium.
Dosing Protocol: 250–500 mcg SubQ daily or injected locally into the scalp. Cycle: 6–8 weeks.
4. TB-500 (Thymosin Beta-4) — Follicle Stem Cell Activation
Thymosin Beta-4 activates quiescent hair follicle stem cells in the bulge region — the reservoir of cells needed for new follicle cycling. Animal studies show TB-500 promotes hair regrowth by reactivating dormant follicles and has demonstrated hair growth stimulation comparable to minoxidil in some models.
Dosing Protocol: 2 mg SubQ twice weekly for 4–6 weeks (loading), then 2 mg weekly. Can be combined with topical application to the scalp.
GHK-Cu works directly on follicle cells and scalp vasculature at the local level. IGF-1 LR3 provides the growth factor signal extending the anagen phase. BPC-157 ensures the scalp microvasculature and inflammatory environment support follicle health. TB-500 reactivates dormant follicle stem cells — addressing follicles that have stopped cycling rather than those that have died.
Research Use Only. All information on this page is for educational purposes only and is not medical advice. PepSherpa does not sell peptides. Consult a licensed healthcare provider before making any health decisions. Many of the studies cited are preclinical (animal/in-vitro).