ghk-cu peptide benefits effects research 2025 2026 Peptide: Hair Regrowth for Thinning & Alopecia Peptide Therapy for Injury Repair:
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2008 Jun;27(3):421-7

Int J Pharm Biomed Sci

[8] When to seek medical advice: If scalp irritation persists or worsens after stopping the product, seek advice from your GP or pharmacist

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