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    1. Caffeine Stimulant used in hair shampoos and lotions
    2. Peppermint herb and oil thought to stimulate skin and hair
    3. Bimatoprost Prostaglandin eye drop used for glaucoma and eyelash growth
    4. Follistatin Protein that blocks activin, a growth-regulating signal
    5. Low Level Laser Therapy Red-light devices, such as caps, combs and helmets, used on the scalp