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    1. Hydrocortisone Mild corticosteroid used on the skin and scalp
    2. Biotin B vitamin, often sold as a hair supplement
    3. Clascoterone Topical androgen-receptor blocker, approved as an acne cream
    4. Dutasteride 5-alpha reductase inhibitor that blocks both enzyme types, a stronger DHT blocker than finasteride
    5. Adenosine Molecule the body uses for energy, used as a cosmetic hair-lotion ingredient