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    1. Follistatin Protein that blocks activin, a growth-regulating signal
    2. Rapamycin Immune-suppressing drug, also called sirolimus
    3. Low Level Laser Therapy Red-light devices, such as caps, combs and helmets, used on the scalp
    4. Stemoxydine Cosmetic ingredient made by L'Oréal
    5. Alopecia Areata autoimmune disorder causing patchy hair loss