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    1. Hair Transplant Surgery that moves hair follicles from the back of the scalp to thinning areas
    2. GHK-Cu Copper peptide used in skin and hair cosmetics
    3. Biotin B vitamin, often sold as a hair supplement
    4. Follistatin Protein that blocks activin, a growth-regulating signal
    5. Spironolactone Blood-pressure and diuretic drug with anti-androgen effects