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    1. Stemoxydine Cosmetic ingredient made by L'Oréal
    2. Alopecia Areata autoimmune disorder causing patchy hair loss
    3. Low Level Laser Therapy Red-light devices, such as caps, combs and helmets, used on the scalp
    4. Vitamin D Vitamin made in the skin from sunlight, also taken as a supplement
    5. Follistatin Protein that blocks activin, a growth-regulating signal