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    1. Baricitinib JAK inhibitor pill used for severe alopecia areata
    2. Stemoxydine Cosmetic ingredient made by L'Oréal
    3. Caffeine Stimulant used in hair shampoos and lotions
    4. GT20029 Experimental topical drug designed to break down androgen receptors
    5. Follistatin Protein that blocks activin, a growth-regulating signal