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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. Low Level Laser Therapy Red-light devices, such as caps, combs and helmets, used on the scalp
    4. Adenosine Molecule the body uses for energy, used as a cosmetic hair-lotion ingredient
    5. Alfatradiol Weak form of estrogen applied to the scalp